CVE-2024-40961 (GCVE-0-2024-40961)
Vulnerability from cvelistv5
Published
2024-07-12 12:32
Modified
2026-05-12 11:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible NULL deref in fib6_nh_init() syzbot reminds us that in6_dev_get() can return NULL. fib6_nh_init() ip6_validate_gw( &idev ) ip6_route_check_nh( idev ) *idev = in6_dev_get(dev); // can be NULL Oops: general protection fault, probably for non-canonical address 0xdffffc00000000bc: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000005e0-0x00000000000005e7] CPU: 0 PID: 11237 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00249-gbe27b8965297 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:fib6_nh_init+0x640/0x2160 net/ipv6/route.c:3606 Code: 00 00 fc ff df 4c 8b 64 24 58 48 8b 44 24 28 4c 8b 74 24 30 48 89 c1 48 89 44 24 28 48 8d 98 e0 05 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 b3 17 00 00 8b 1b 31 ff 89 de e8 b8 8b RSP: 0018:ffffc900032775a0 EFLAGS: 00010202 RAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000000000 RDX: 0000000000000010 RSI: ffffc90003277a54 RDI: ffff88802b3a08d8 RBP: ffffc900032778b0 R08: 00000000000002fc R09: 0000000000000000 R10: 00000000000002fc R11: 0000000000000000 R12: ffff88802b3a08b8 R13: 1ffff9200064eec8 R14: ffffc90003277a00 R15: dffffc0000000000 FS: 00007f940feb06c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000245e8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ip6_route_info_create+0x99e/0x12b0 net/ipv6/route.c:3809 ip6_route_add+0x28/0x160 net/ipv6/route.c:3853 ipv6_route_ioctl+0x588/0x870 net/ipv6/route.c:4483 inet6_ioctl+0x21a/0x280 net/ipv6/af_inet6.c:579 sock_do_ioctl+0x158/0x460 net/socket.c:1222 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f940f07cea9
Impacted products
Vendor Product Version
Linux Linux Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
Version: 428604fb118facce1309670779a35baf27ad044c
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent possible NULL deref in fib6_nh_init()\n\nsyzbot reminds us that in6_dev_get() can return NULL.\n\nfib6_nh_init()\n    ip6_validate_gw(  \u0026idev  )\n        ip6_route_check_nh(  idev  )\n            *idev = in6_dev_get(dev); // can be NULL\n\nOops: general protection fault, probably for non-canonical address 0xdffffc00000000bc: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x00000000000005e0-0x00000000000005e7]\nCPU: 0 PID: 11237 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00249-gbe27b8965297 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024\n RIP: 0010:fib6_nh_init+0x640/0x2160 net/ipv6/route.c:3606\nCode: 00 00 fc ff df 4c 8b 64 24 58 48 8b 44 24 28 4c 8b 74 24 30 48 89 c1 48 89 44 24 28 48 8d 98 e0 05 00 00 48 89 d8 48 c1 e8 03 \u003c42\u003e 0f b6 04 38 84 c0 0f 85 b3 17 00 00 8b 1b 31 ff 89 de e8 b8 8b\nRSP: 0018:ffffc900032775a0 EFLAGS: 00010202\nRAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000000000\nRDX: 0000000000000010 RSI: ffffc90003277a54 RDI: ffff88802b3a08d8\nRBP: ffffc900032778b0 R08: 00000000000002fc R09: 0000000000000000\nR10: 00000000000002fc R11: 0000000000000000 R12: ffff88802b3a08b8\nR13: 1ffff9200064eec8 R14: ffffc90003277a00 R15: dffffc0000000000\nFS:  00007f940feb06c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 00000000245e8000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  ip6_route_info_create+0x99e/0x12b0 net/ipv6/route.c:3809\n  ip6_route_add+0x28/0x160 net/ipv6/route.c:3853\n  ipv6_route_ioctl+0x588/0x870 net/ipv6/route.c:4483\n  inet6_ioctl+0x21a/0x280 net/ipv6/af_inet6.c:579\n  sock_do_ioctl+0x158/0x460 net/socket.c:1222\n  sock_ioctl+0x629/0x8e0 net/socket.c:1341\n  vfs_ioctl fs/ioctl.c:51 [inline]\n  __do_sys_ioctl fs/ioctl.c:907 [inline]\n  __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f940f07cea9"
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    "cveId": "CVE-2024-40961",
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    "dateReserved": "2024-07-12T12:17:45.594Z",
    "dateUpdated": "2026-05-12T11:55:59.038Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}


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