CVE-2024-50033 (GCVE-0-2024-50033)

Vulnerability from cvelistv5 – Published: 2024-10-21 19:39 – Updated: 2026-08-05 11:41
VLAI
Title
slip: make slhc_remember() more robust against malicious packets
Summary
In the Linux kernel, the following vulnerability has been resolved: slip: make slhc_remember() more robust against malicious packets syzbot found that slhc_remember() was missing checks against malicious packets [1]. slhc_remember() only checked the size of the packet was at least 20, which is not good enough. We need to make sure the packet includes the IPv4 and TCP header that are supposed to be carried. Add iph and th pointers to make the code more readable. [1] BUG: KMSAN: uninit-value in slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455 ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [inline] ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212 ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [inline] __se_sys_sendmmsg net/socket.c:2768 [inline] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < ba6501ea06462d6404d57d5644cf2854db38e7d7 (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < 36b054324d18e51cf466134e13b6fbe3c91f52af (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < 5e336384cc9b608e0551f99c3d87316ca3b0e51a (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < ff5e0f895315706e4ca5a19df15be6866cee4f5d (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < 8bb79eb1db85a10865f0d4dd15b013def3f2d246 (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < 29e8d96d44f51cf89a62dd042be35d052833b95c (git)
Affected: b5451d783ade99308dfccdf5ca284ed07affa4ff , < 7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c (git)
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Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nslip: make slhc_remember() more robust against malicious packets\n\nsyzbot found that slhc_remember() was missing checks against\nmalicious packets [1].\n\nslhc_remember() only checked the size of the packet was at least 20,\nwhich is not good enough.\n\nWe need to make sure the packet includes the IPv4 and TCP header\nthat are supposed to be carried.\n\nAdd iph and th pointers to make the code more readable.\n\n[1]\n\nBUG: KMSAN: uninit-value in slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\n  slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\n  ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455\n  ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [inline]\n  ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212\n  ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\n  release_sock+0x6b/0x250 net/core/sock.c:3626\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n  slab_post_alloc_hook mm/slub.c:4091 [inline]\n  slab_alloc_node mm/slub.c:4134 [inline]\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\n  alloc_skb include/linux/skbuff.h:1322 [inline]\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\n  sock_sendmsg_nosec net/socket.c:729 [inline]\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nCPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024"
        }
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        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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              "lang": "en",
              "value": "AV:N - slhc_remember() is driven directly by received PPP frames via ppp_receive_nonmp_frame(), and ppp_input() is entered from pptp.c (PPP over GRE) and l2tp_ppp.c (PPP over L2TP/UDP), both of which are routable across the Internet, as well as PPPoE on the local segment. A remote PPP peer or an attacker injecting into an established PPTP/L2TP session delivers the malformed VJ-uncompressed frame with no local access.\nAC:L - The attacker fully controls the frame; setting ihl=15 with a 60-byte body makes the ip_fast_csum() gate trivially satisfiable since all checksummed bytes are attacker-supplied, and the OOB read succeeds deterministically regardless of heap contents. No race, no memory-layout precondition, and VJ compression is enabled by default in pppd.\nPR:N - The remote PPP peer needs no privileges or credentials on the target host \u2014 a rogue PPPoE access concentrator or PPTP/L2TP server is the peer by definition, and PPTP-GRE demultiplexing authenticates nothing beyond source address and call ID. Even the local syzbot path only requires ns_capable(CAP_NET_ADMIN), reachable by any unprivileged user via unshare -Urn.\nUI:N - Exploitation happens entirely through frames received on an already-established PPP link, which is normal operational state. No action by any user or administrator is needed at exploit time.\nS:U - The out-of-bounds access and its consequences are confined to the kernel\u0027s own memory and network stack, with no crossing into a different security authority such as a hypervisor or IOMMU boundary.\nC:H - Up to 60 bytes of uninitialized/stale kernel heap are read past the packet into cs_tcp and cs_tcpopt, and a follow-up VJ-compressed frame makes slhc_uncompress() rebuild that data into a well-formed IP packet with an attacker-chosen destination address, exfiltrating kernel memory to the attacker. The primitive is repeatable without limit, giving broad heap disclosure rather than a bounded few-byte leak.\nI:H - Uninitialized memory becomes cs_tcp.doff, which together with cs_ip.ihl drives hdrlen up to 120 in slhc_uncompress(); sl_bump() only reserves 80 bytes before that call, so the resulting memmove/memcpy writes past the kmalloc\u0027d sl-\u003erbuff, giving heap corruption. The corrupted decompression state also causes the kernel to inject attacker-shaped packets carrying heap contents into the local network stack.\nA:H - The out-of-bounds read plus the resulting oversized hdrlen leads to heap overwrite past sl-\u003erbuff on the SLIP path and to malformed reconstructed packets, and on hardened or KASAN/KMSAN-instrumented kernels the access itself triggers an immediate report and panic. The condition is remotely and repeatedly triggerable, so a persistent crash is achievable."
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50033",
    "datePublished": "2024-10-21T19:39:35.127Z",
    "dateReserved": "2024-10-21T12:17:06.069Z",
    "dateUpdated": "2026-08-05T11:41:08.646Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-50033",
      "date": "2026-08-05",
      "epss": "0.00785",
      "percentile": "0.5257"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.2\", \"versionEndExcluding\": \"5.10.227\", \"matchCriteriaId\": \"6183BF3B-0B09-4239-A6D3-80AFCA3B0CEB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.168\", \"matchCriteriaId\": \"4D51C05D-455B-4D8D-89E7-A58E140B864C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.113\", \"matchCriteriaId\": \"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.57\", \"matchCriteriaId\": \"05D83DB8-7465-4F88-AFB2-980011992AC1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.11.4\", \"matchCriteriaId\": \"AA84D336-CE9A-4535-B901-1AD77EC17C34\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7F361E1D-580F-4A2D-A509-7615F73167A1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nslip: make slhc_remember() more robust against malicious packets\\n\\nsyzbot found that slhc_remember() was missing checks against\\nmalicious packets [1].\\n\\nslhc_remember() only checked the size of the packet was at least 20,\\nwhich is not good enough.\\n\\nWe need to make sure the packet includes the IPv4 and TCP header\\nthat are supposed to be carried.\\n\\nAdd iph and th pointers to make the code more readable.\\n\\n[1]\\n\\nBUG: KMSAN: uninit-value in slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455\\n  ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [inline]\\n  ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212\\n  ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4091 [inline]\\n  slab_alloc_node mm/slub.c:4134 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: slip: hacer que slhc_remember() sea m\\u00e1s robusto contra paquetes maliciosos syzbot descubri\\u00f3 que slhc_remember() no realizaba comprobaciones contra paquetes maliciosos [1]. slhc_remember() solo comprobaba que el tama\\u00f1o del paquete fuera al menos 20, lo que no es suficiente. Necesitamos asegurarnos de que el paquete incluya los encabezados IPv4 y TCP que se supone que deben transportarse. Agregue punteros iph y th para que el c\\u00f3digo sea m\\u00e1s legible. [1] ERROR: KMSAN: valor no inicializado en slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455 ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [en l\\u00ednea] ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212 ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [en l\\u00ednea] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [en l\\u00ednea] __se_sys_sendmmsg net/socket.c:2768 [en l\\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\\u00f3 en: slab_post_alloc_hook mm/slub.c:4091 [en l\\u00ednea] slab_alloc_node mm/slub.c:4134 [en l\\u00ednea] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [en l\\u00ednea] sock_wmalloc+0xfe/0x1a0 red/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec red/socket.c:729 [en l\\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\\u00ednea] __se_sys_sendmmsg net/socket.c:2768 [en l\\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 No contaminado 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024\"}]",
      "id": "CVE-2024-50033",
      "lastModified": "2024-11-08T16:15:42.627",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.2}]}",
      "published": "2024-10-21T20:15:16.477",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/29e8d96d44f51cf89a62dd042be35d052833b95c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/36b054324d18e51cf466134e13b6fbe3c91f52af\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5e336384cc9b608e0551f99c3d87316ca3b0e51a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8bb79eb1db85a10865f0d4dd15b013def3f2d246\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ba6501ea06462d6404d57d5644cf2854db38e7d7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/ff5e0f895315706e4ca5a19df15be6866cee4f5d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-908\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:28:05.000Z",
      "cve": "CVE-2024-50033",
      "id": "msrc_CVE-2024-50033",
      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "slip: make slhc_remember() more robust against malicious packets",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50033.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50033\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T20:15:16.477\",\"lastModified\":\"2026-08-04T11:21:10.130\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nslip: make slhc_remember() more robust against malicious packets\\n\\nsyzbot found that slhc_remember() was missing checks against\\nmalicious packets [1].\\n\\nslhc_remember() only checked the size of the packet was at least 20,\\nwhich is not good enough.\\n\\nWe need to make sure the packet includes the IPv4 and TCP header\\nthat are supposed to be carried.\\n\\nAdd iph and th pointers to make the code more readable.\\n\\n[1]\\n\\nBUG: KMSAN: uninit-value in slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455\\n  ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [inline]\\n  ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212\\n  ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4091 [inline]\\n  slab_alloc_node mm/slub.c:4134 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: slip: hacer que slhc_remember() sea m\u00e1s robusto contra paquetes maliciosos syzbot descubri\u00f3 que slhc_remember() no realizaba comprobaciones contra paquetes maliciosos [1]. slhc_remember() solo comprobaba que el tama\u00f1o del paquete fuera al menos 20, lo que no es suficiente. Necesitamos asegurarnos de que el paquete incluya los encabezados IPv4 y TCP que se supone que deben transportarse. Agregue punteros iph y th para que el c\u00f3digo sea m\u00e1s legible. [1] ERROR: KMSAN: valor no inicializado en slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666 ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455 ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [en l\u00ednea] ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212 ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327 pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113 __release_sock+0x1da/0x330 net/core/sock.c:3072 release_sock+0x6b/0x250 net/core/sock.c:3626 pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903 sock_sendmsg_nosec net/socket.c:729 [en l\u00ednea] __sock_sendmsg+0x30f/0x380 net/socket.c:744 ____sys_sendmsg+0x903/0xb60 net/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742 __do_sys_sendmmsg net/socket.c:2771 [en l\u00ednea] __se_sys_sendmmsg net/socket.c:2768 [en l\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\u00f3 en: slab_post_alloc_hook mm/slub.c:4091 [en l\u00ednea] slab_alloc_node mm/slub.c:4134 [en l\u00ednea] kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587 __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [en l\u00ednea] sock_wmalloc+0xfe/0x1a0 red/core/sock.c:2732 pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867 sock_sendmsg_nosec red/socket.c:729 [en l\u00ednea] __sock_sendmsg+0x30f/0x380 red/socket.c:744 ____sys_sendmsg+0x903/0xb60 red/socket.c:2602 ___sys_sendmsg+0x28d/0x3c0 red/socket.c:2656 __sys_sendmmsg+0x3c1/0x960 red/socket.c:2742 __do_sys_sendmmsg red/socket.c:2771 [en l\u00ednea] __se_sys_sendmmsg net/socket.c:2768 [en l\u00ednea] __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768 x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 No contaminado 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/slip/slhc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"ba6501ea06462d6404d57d5644cf2854db38e7d7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"36b054324d18e51cf466134e13b6fbe3c91f52af\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"5e336384cc9b608e0551f99c3d87316ca3b0e51a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"ff5e0f895315706e4ca5a19df15be6866cee4f5d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"8bb79eb1db85a10865f0d4dd15b013def3f2d246\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"29e8d96d44f51cf89a62dd042be35d052833b95c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b5451d783ade99308dfccdf5ca284ed07affa4ff\",\"lessThan\":\"7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/slip/slhc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.285\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.227\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.168\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.113\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.57\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.4\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T17:47:44+00:00",
      "cve": "CVE-2024-50033",
      "id": "CVE-2024-50033",
      "initial_release_date": "2024-10-21T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: slip: make slhc_remember() more robust against malicious packets",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50033.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-23T01:57:14Z",
      "cve": "CVE-2024-50033",
      "id": "CVE-2024-50033",
      "initial_release_date": "2024-10-22T02:50:09Z",
      "product_status:known_affected": "582",
      "product_status:known_not_affected": "42",
      "product_status:recommended": "726",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50033",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50033.json",
      "version": "74"
    },
    "vulnrichment": {
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\"affected\", \"version\": \"0\", \"lessThan\": \"V3.2\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-355557.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:59:49.341Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50033\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:25:49.586727Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:25:52.898Z\"}}], \"cna\": {\"title\": \"slip: make slhc_remember() more robust against malicious packets\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"ba6501ea06462d6404d57d5644cf2854db38e7d7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"36b054324d18e51cf466134e13b6fbe3c91f52af\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"5e336384cc9b608e0551f99c3d87316ca3b0e51a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"ff5e0f895315706e4ca5a19df15be6866cee4f5d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"8bb79eb1db85a10865f0d4dd15b013def3f2d246\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"29e8d96d44f51cf89a62dd042be35d052833b95c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5451d783ade99308dfccdf5ca284ed07affa4ff\", \"lessThan\": \"7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/slip/slhc.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.57\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/slip/slhc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ba6501ea06462d6404d57d5644cf2854db38e7d7\"}, {\"url\": \"https://git.kernel.org/stable/c/36b054324d18e51cf466134e13b6fbe3c91f52af\"}, {\"url\": \"https://git.kernel.org/stable/c/5e336384cc9b608e0551f99c3d87316ca3b0e51a\"}, {\"url\": \"https://git.kernel.org/stable/c/ff5e0f895315706e4ca5a19df15be6866cee4f5d\"}, {\"url\": \"https://git.kernel.org/stable/c/8bb79eb1db85a10865f0d4dd15b013def3f2d246\"}, {\"url\": \"https://git.kernel.org/stable/c/29e8d96d44f51cf89a62dd042be35d052833b95c\"}, {\"url\": \"https://git.kernel.org/stable/c/7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nslip: make slhc_remember() more robust against malicious packets\\n\\nsyzbot found that slhc_remember() was missing checks against\\nmalicious packets [1].\\n\\nslhc_remember() only checked the size of the packet was at least 20,\\nwhich is not good enough.\\n\\nWe need to make sure the packet includes the IPv4 and TCP header\\nthat are supposed to be carried.\\n\\nAdd iph and th pointers to make the code more readable.\\n\\n[1]\\n\\nBUG: KMSAN: uninit-value in slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  slhc_remember+0x2e8/0x7b0 drivers/net/slip/slhc.c:666\\n  ppp_receive_nonmp_frame+0xe45/0x35e0 drivers/net/ppp/ppp_generic.c:2455\\n  ppp_receive_frame drivers/net/ppp/ppp_generic.c:2372 [inline]\\n  ppp_do_recv+0x65f/0x40d0 drivers/net/ppp/ppp_generic.c:2212\\n  ppp_input+0x7dc/0xe60 drivers/net/ppp/ppp_generic.c:2327\\n  pppoe_rcv_core+0x1d3/0x720 drivers/net/ppp/pppoe.c:379\\n  sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1113\\n  __release_sock+0x1da/0x330 net/core/sock.c:3072\\n  release_sock+0x6b/0x250 net/core/sock.c:3626\\n  pppoe_sendmsg+0x2b8/0xb90 drivers/net/ppp/pppoe.c:903\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n  slab_post_alloc_hook mm/slub.c:4091 [inline]\\n  slab_alloc_node mm/slub.c:4134 [inline]\\n  kmem_cache_alloc_node_noprof+0x6bf/0xb80 mm/slub.c:4186\\n  kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:587\\n  __alloc_skb+0x363/0x7b0 net/core/skbuff.c:678\\n  alloc_skb include/linux/skbuff.h:1322 [inline]\\n  sock_wmalloc+0xfe/0x1a0 net/core/sock.c:2732\\n  pppoe_sendmsg+0x3a7/0xb90 drivers/net/ppp/pppoe.c:867\\n  sock_sendmsg_nosec net/socket.c:729 [inline]\\n  __sock_sendmsg+0x30f/0x380 net/socket.c:744\\n  ____sys_sendmsg+0x903/0xb60 net/socket.c:2602\\n  ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2656\\n  __sys_sendmmsg+0x3c1/0x960 net/socket.c:2742\\n  __do_sys_sendmmsg net/socket.c:2771 [inline]\\n  __se_sys_sendmmsg net/socket.c:2768 [inline]\\n  __x64_sys_sendmmsg+0xbc/0x120 net/socket.c:2768\\n  x64_sys_call+0xb6e/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:308\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nCPU: 0 UID: 0 PID: 5460 Comm: syz.2.33 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.57\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.4\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"3.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:44:11.733Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50033\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:59:49.341Z\", \"dateReserved\": \"2024-10-21T12:17:06.069Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T19:39:35.127Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.