ghsa-v298-p3h5-pc6r
Vulnerability from github
Published
2025-01-15 15:31
Modified
2025-01-21 18:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

ila: serialize calls to nf_register_net_hooks()

syzbot found a race in ila_add_mapping() [1]

commit 031ae72825ce ("ila: call nf_unregister_net_hooks() sooner") attempted to fix a similar issue.

Looking at the syzbot repro, we have concurrent ILA_CMD_ADD commands.

Add a mutex to make sure at most one thread is calling nf_register_net_hooks().

[1] BUG: KASAN: slab-use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline] BUG: KASAN: slab-use-after-free in __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604 Read of size 4 at addr ffff888028f40008 by task dhcpcd/5501

CPU: 1 UID: 0 PID: 5501 Comm: dhcpcd Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 rht_key_hashfn include/linux/rhashtable.h:159 [inline] __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604 rhashtable_lookup include/linux/rhashtable.h:646 [inline] rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline] ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:127 [inline] ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline] ila_nf_input+0x1ee/0x620 net/ipv6/ila/ila_xlat.c:185 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook.constprop.0+0x42e/0x750 include/linux/netfilter.h:269 NF_HOOK include/linux/netfilter.h:312 [inline] ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5672 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785 process_backlog+0x443/0x15f0 net/core/dev.c:6117 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0xa94/0x1010 net/core/dev.c:7074 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049

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{
  "affected": [],
  "aliases": [
    "CVE-2024-57900"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-15T13:15:14Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nila: serialize calls to nf_register_net_hooks()\n\nsyzbot found a race in ila_add_mapping() [1]\n\ncommit 031ae72825ce (\"ila: call nf_unregister_net_hooks() sooner\")\nattempted to fix a similar issue.\n\nLooking at the syzbot repro, we have concurrent ILA_CMD_ADD commands.\n\nAdd a mutex to make sure at most one thread is calling nf_register_net_hooks().\n\n[1]\n BUG: KASAN: slab-use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]\n BUG: KASAN: slab-use-after-free in __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604\nRead of size 4 at addr ffff888028f40008 by task dhcpcd/5501\n\nCPU: 1 UID: 0 PID: 5501 Comm: dhcpcd Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nCall Trace:\n \u003cIRQ\u003e\n  __dump_stack lib/dump_stack.c:94 [inline]\n  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n  print_address_description mm/kasan/report.c:378 [inline]\n  print_report+0xc3/0x620 mm/kasan/report.c:489\n  kasan_report+0xd9/0x110 mm/kasan/report.c:602\n  rht_key_hashfn include/linux/rhashtable.h:159 [inline]\n  __rhashtable_lookup.constprop.0+0x426/0x550 include/linux/rhashtable.h:604\n  rhashtable_lookup include/linux/rhashtable.h:646 [inline]\n  rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline]\n  ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:127 [inline]\n  ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]\n  ila_nf_input+0x1ee/0x620 net/ipv6/ila/ila_xlat.c:185\n  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n  nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626\n  nf_hook.constprop.0+0x42e/0x750 include/linux/netfilter.h:269\n  NF_HOOK include/linux/netfilter.h:312 [inline]\n  ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:309\n  __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5672\n  __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785\n  process_backlog+0x443/0x15f0 net/core/dev.c:6117\n  __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883\n  napi_poll net/core/dev.c:6952 [inline]\n  net_rx_action+0xa94/0x1010 net/core/dev.c:7074\n  handle_softirqs+0x213/0x8f0 kernel/softirq.c:561\n  __do_softirq kernel/softirq.c:595 [inline]\n  invoke_softirq kernel/softirq.c:435 [inline]\n  __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:678\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]\n  sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049",
  "id": "GHSA-v298-p3h5-pc6r",
  "modified": "2025-01-21T18:31:05Z",
  "published": "2025-01-15T15:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57900"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1638f430f8900f2375f5de45508fbe553997e190"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17e8fa894345e8d2c7a7642482267b275c3d4553"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/260466b576bca0081a7d4acecc8e93687aa22d0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d1b63cf468e446b9feaf4e4e73182b9cc82f460"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad0677c37c14fa28913daea92d139644d7acf04e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3017895e393536b234cf80a83fc463c08a28137"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eba25e21dce7ec70e2b3f121b2f3a25a4ec43eca"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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