cve-2024-26608
Vulnerability from cvelistv5
Published
2024-02-29 15:52
Modified
2024-12-19 08:43
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix global oob in ksmbd_nl_policy Similar to a reported issue (check the commit b33fb5b801c6 ("net: qualcomm: rmnet: fix global oob in rmnet_policy"), my local fuzzer finds another global out-of-bounds read for policy ksmbd_nl_policy. See bug trace below: ================================================================== BUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline] BUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 Read of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810 CPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G N 6.1.0 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x172/0x475 mm/kasan/report.c:395 kasan_report+0xbb/0x1c0 mm/kasan/report.c:495 validate_nla lib/nlattr.c:386 [inline] __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 __nla_parse+0x3e/0x50 lib/nlattr.c:697 __nlmsg_parse include/net/netlink.h:748 [inline] genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565 genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850 netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0x154/0x190 net/socket.c:734 ____sys_sendmsg+0x6df/0x840 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdd66a8f359 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003 RBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000 </TASK> The buggy address belongs to the variable: ksmbd_nl_policy+0x100/0xa80 The buggy address belongs to the physical page: page:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b flags: 0x200000000001000(reserved|node=0|zone=2) raw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9 ^ ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05 ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9 ================================================================== To fix it, add a placeholder named __KSMBD_EVENT_MAX and let KSMBD_EVENT_MAX to be its original value - 1 according to what other netlink families do. Also change two sites that refer the KSMBD_EVENT_MAX to correct value.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa
Impacted products
Vendor Product Version
Linux Linux Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
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   Linux Linux Version: 5.15
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix global oob in ksmbd_nl_policy\n\nSimilar to a reported issue (check the commit b33fb5b801c6 (\"net:\nqualcomm: rmnet: fix global oob in rmnet_policy\"), my local fuzzer finds\nanother global out-of-bounds read for policy ksmbd_nl_policy. See bug\ntrace below:\n\n==================================================================\nBUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline]\nBUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\nRead of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810\n\nCPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G                 N 6.1.0 #3\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:284 [inline]\n print_report+0x172/0x475 mm/kasan/report.c:395\n kasan_report+0xbb/0x1c0 mm/kasan/report.c:495\n validate_nla lib/nlattr.c:386 [inline]\n __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\n __nla_parse+0x3e/0x50 lib/nlattr.c:697\n __nlmsg_parse include/net/netlink.h:748 [inline]\n genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565\n genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734\n genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]\n genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850\n netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540\n genl_rcv+0x24/0x40 net/netlink/genetlink.c:861\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/socket.c:714 [inline]\n sock_sendmsg+0x154/0x190 net/socket.c:734\n ____sys_sendmsg+0x6df/0x840 net/socket.c:2482\n ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536\n __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fdd66a8f359\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003\nRBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000\n \u003c/TASK\u003e\n\nThe buggy address belongs to the variable:\n ksmbd_nl_policy+0x100/0xa80\n\nThe buggy address belongs to the physical page:\npage:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b\nflags: 0x200000000001000(reserved|node=0|zone=2)\nraw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000\nraw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n\u003effffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9\n                   ^\n ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05\n ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9\n==================================================================\n\nTo fix it, add a placeholder named __KSMBD_EVENT_MAX and let\nKSMBD_EVENT_MAX to be its original value - 1 according to what other\nnetlink families do. Also change two sites that refer the\nKSMBD_EVENT_MAX to correct value."
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    "datePublished": "2024-02-29T15:52:14.626Z",
    "dateReserved": "2024-02-19T14:20:24.130Z",
    "dateUpdated": "2024-12-19T08:43:28.452Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26608\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-11T18:15:18.953\",\"lastModified\":\"2024-11-21T09:02:39.107\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix global oob in ksmbd_nl_policy\\n\\nSimilar to a reported issue (check the commit b33fb5b801c6 (\\\"net:\\nqualcomm: rmnet: fix global oob in rmnet_policy\\\"), my local fuzzer finds\\nanother global out-of-bounds read for policy ksmbd_nl_policy. See bug\\ntrace below:\\n\\n==================================================================\\nBUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline]\\nBUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\nRead of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810\\n\\nCPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G                 N 6.1.0 #3\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106\\n print_address_description mm/kasan/report.c:284 [inline]\\n print_report+0x172/0x475 mm/kasan/report.c:395\\n kasan_report+0xbb/0x1c0 mm/kasan/report.c:495\\n validate_nla lib/nlattr.c:386 [inline]\\n __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\n __nla_parse+0x3e/0x50 lib/nlattr.c:697\\n __nlmsg_parse include/net/netlink.h:748 [inline]\\n genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565\\n genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734\\n genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]\\n genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850\\n netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540\\n genl_rcv+0x24/0x40 net/netlink/genetlink.c:861\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg+0x154/0x190 net/socket.c:734\\n ____sys_sendmsg+0x6df/0x840 net/socket.c:2482\\n ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536\\n __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\nRIP: 0033:0x7fdd66a8f359\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003\\nRBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000\\n \u003c/TASK\u003e\\n\\nThe buggy address belongs to the variable:\\n ksmbd_nl_policy+0x100/0xa80\\n\\nThe buggy address belongs to the physical page:\\npage:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b\\nflags: 0x200000000001000(reserved|node=0|zone=2)\\nraw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000\\nraw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n\u003effffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9\\n                   ^\\n ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05\\n ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9\\n==================================================================\\n\\nTo fix it, add a placeholder named __KSMBD_EVENT_MAX and let\\nKSMBD_EVENT_MAX to be its original value - 1 according to what other\\nnetlink families do. Also change two sites that refer the\\nKSMBD_EVENT_MAX to correct value.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ksmbd: corrige el oob global en ksmbd_nl_policy Similar a un problema reportado (verifique el commit b33fb5b801c6 (\\\"net: qualcomm: rmnet: corrige el oob global en rmnet_policy\\\"), mi fuzzer local encuentra otra Lectura global fuera de los l\u00edmites para la pol\u00edtica ksmbd_nl_policy. Consulte el seguimiento del error a continuaci\u00f3n: ==================================== ================================ ERROR: KASAN: global fuera de los l\u00edmites en validar_nla lib/nlattr.c :386 [en l\u00ednea] ERROR: KASAN: global fuera de los l\u00edmites en __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 Lectura de tama\u00f1o 1 en addr ffffffff8f24b100 por tarea syz-executor.1/62810 CPU: 0 PID: 62810 Comm: syz-executor.1 Contaminado: GN 6.1.0 #3 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 01/04/2014 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [en l\u00ednea] print_report+0x172/0x475 mm/kasan/report.c:395 kasan_report +0xbb/0x1c0 mm/kasan/report.c:495 validar_nla lib/nlattr.c:386 [en l\u00ednea] __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600 __nla_parse+0x3e/0x50 lib/nlattr.c:697 __nlmsg_parse incluir /net/netlink.h:748 [en l\u00ednea] genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565 genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734 genl_family_rcv_msg net/netlink/genetlink. c:833 [en l\u00ednea] genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850 netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net /netlink/af_netlink.c:1319 [en l\u00ednea] netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [en l\u00ednea] sock_sendmsg+0x154/0x190 net/socket.c:734 ____sys_sendmsg+0x6df/0x840 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf3/0x1c0 net/socket. c:2565 do_syscall_x64 arco /x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdd66a8f359 C\u00f3digo: 28 00 00 00 75 05 48 8 3 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff f ff f7 d8 64 89 01 48 RSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8 f359 RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003 RBP: 00007fdd66ada493 R08: 00000000000000000 R09: 00000000000000000 R 10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000  La direcci\u00f3n del error pertenece a la variable: ksmbd_nl_policy+0x 100/0xa80 La direcci\u00f3n del error pertenece a la p\u00e1gina f\u00edsica: p\u00e1gina:0000000034f47940 refcount:1 mapcount:0 mapeo: 0000000000000000 \u00edndice: 0x0 pfn: 0x1ccc4b banderas: 0x200000000001000 (reservado | nodo = 0 | zona = 2) sin formato: 02000000000001000 ffffea00073312c8 ffffea00073312c8 000000000 0000000 raw: 0000000000000000 00000000000000000 00000001ffffffff 0000000000000000 p\u00e1gina volcada porque: kasan: mal acceso detectado Estado de la memoria alrededor de la direcci\u00f3n con errores: ffffffff8f24b000 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 \u0026gt;ffffffff8f24b100 : f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9 ^ ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05 ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9 ======== = ==================================================== ======= Para solucionarlo, agregue un marcador de posici\u00f3n llamado __KSMBD_EVENT_MAX y truncado\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
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\"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/smb/server/ksmbd_netlink.h\", \"fs/smb/server/transport_ipc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5\"}, {\"url\": \"https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a\"}, {\"url\": \"https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d\"}, {\"url\": \"https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95\"}, {\"url\": \"https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix global oob in ksmbd_nl_policy\\n\\nSimilar to a reported issue (check the commit b33fb5b801c6 (\\\"net:\\nqualcomm: rmnet: fix global oob in rmnet_policy\\\"), my local fuzzer finds\\nanother global out-of-bounds read for policy ksmbd_nl_policy. See bug\\ntrace below:\\n\\n==================================================================\\nBUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline]\\nBUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\nRead of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810\\n\\nCPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G                 N 6.1.0 #3\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106\\n print_address_description mm/kasan/report.c:284 [inline]\\n print_report+0x172/0x475 mm/kasan/report.c:395\\n kasan_report+0xbb/0x1c0 mm/kasan/report.c:495\\n validate_nla lib/nlattr.c:386 [inline]\\n __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\n __nla_parse+0x3e/0x50 lib/nlattr.c:697\\n __nlmsg_parse include/net/netlink.h:748 [inline]\\n genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565\\n genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734\\n genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]\\n genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850\\n netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540\\n genl_rcv+0x24/0x40 net/netlink/genetlink.c:861\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg+0x154/0x190 net/socket.c:734\\n ____sys_sendmsg+0x6df/0x840 net/socket.c:2482\\n ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536\\n __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\nRIP: 0033:0x7fdd66a8f359\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003\\nRBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000\\n \u003c/TASK\u003e\\n\\nThe buggy address belongs to the variable:\\n ksmbd_nl_policy+0x100/0xa80\\n\\nThe buggy address belongs to the physical page:\\npage:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b\\nflags: 0x200000000001000(reserved|node=0|zone=2)\\nraw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000\\nraw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n\u003effffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9\\n                   ^\\n ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05\\n ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9\\n==================================================================\\n\\nTo fix it, add a placeholder named __KSMBD_EVENT_MAX and let\\nKSMBD_EVENT_MAX to be its original value - 1 according to what other\\nnetlink families do. Also change two sites that refer the\\nKSMBD_EVENT_MAX to correct value.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:43:28.452Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26608\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:43:28.452Z\", \"dateReserved\": \"2024-02-19T14:20:24.130Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T15:52:14.626Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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