CVE-2024-40960 (GCVE-0-2024-40960)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:32 – Updated: 2025-11-03 21:58
VLAI?
Title
ipv6: prevent possible NULL dereference in rt6_probe()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible NULL dereference in rt6_probe() syzbot caught a NULL dereference in rt6_probe() [1] Bail out if __in6_dev_get() returns NULL. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cb: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000658-0x000000000000065f] CPU: 1 PID: 22444 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00383-gb8481381d4e2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:rt6_probe net/ipv6/route.c:656 [inline] RIP: 0010:find_match+0x8c4/0xf50 net/ipv6/route.c:758 Code: 14 fd f7 48 8b 85 38 ff ff ff 48 c7 45 b0 00 00 00 00 48 8d b8 5c 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 RSP: 0018:ffffc900034af070 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004521000 RDX: 00000000000000cb RSI: ffffffff8990d0cd RDI: 000000000000065c RBP: ffffc900034af150 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 000000000000000a R13: 1ffff92000695e18 R14: ffff8880244a1d20 R15: 0000000000000000 FS: 00007f4844a5a6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31b27000 CR3: 000000002d42c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> rt6_nh_find_match+0xfa/0x1a0 net/ipv6/route.c:784 nexthop_for_each_fib6_nh+0x26d/0x4a0 net/ipv4/nexthop.c:1496 __find_rr_leaf+0x6e7/0xe00 net/ipv6/route.c:825 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2195 ip6_pol_route+0x1cd/0x1150 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x386/0x720 net/ipv6/fib6_rules.c:121 ip6_route_output_flags_noref net/ipv6/route.c:2639 [inline] ip6_route_output_flags+0x1d0/0x640 net/ipv6/route.c:2651 ip6_dst_lookup_tail.constprop.0+0x961/0x1760 net/ipv6/ip6_output.c:1147 ip6_dst_lookup_flow+0x99/0x1d0 net/ipv6/ip6_output.c:1250 rawv6_sendmsg+0xdab/0x4340 net/ipv6/raw.c:898 inet_sendmsg+0x119/0x140 net/ipv4/af_inet.c:853 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x4b8/0x5c0 net/socket.c:1160 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6b6/0x1140 fs/read_write.c:590 ksys_write+0x1f8/0x260 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < f0cda984e4e634b221dbf9642b8ecc5b4806b41e (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < d66fc4826127c82f99c4033380f8e93833d331c7 (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < 1ed9849fdf9a1a617129346b11d2094ca26828dc (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < 569c9d9ea6648d099187527b93982f406ddcebc0 (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < 51ee2f7c30790799d0ec30c0ce0c743e58f046f2 (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < 73e7c8ca6ad76f29b2c99c20845a6f3b203ff0c6 (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < 6eed6d3cd19ff3cfa83aeceed86da14abaf7417b (git)
Affected: 52e1635631b342803aecaf81a362c1464e3da2e5 , < b86762dbe19a62e785c189f313cda5b989931f37 (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.17
Unaffected: 0 , < 2.6.17 (semver)
Unaffected: 4.19.317 , ≤ 4.19.* (semver)
Unaffected: 5.4.279 , ≤ 5.4.* (semver)
Unaffected: 5.10.221 , ≤ 5.10.* (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.96 , ≤ 6.1.* (semver)
Unaffected: 6.6.36 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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\"https://git.kernel.org/stable/c/b86762dbe19a62e785c189f313cda5b989931f37\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:58:25.917Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40960\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:03:29.403653Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:22.390Z\"}}], \"cna\": {\"title\": \"ipv6: prevent possible NULL dereference in rt6_probe()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"f0cda984e4e634b221dbf9642b8ecc5b4806b41e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"d66fc4826127c82f99c4033380f8e93833d331c7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"1ed9849fdf9a1a617129346b11d2094ca26828dc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"569c9d9ea6648d099187527b93982f406ddcebc0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"51ee2f7c30790799d0ec30c0ce0c743e58f046f2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"73e7c8ca6ad76f29b2c99c20845a6f3b203ff0c6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"6eed6d3cd19ff3cfa83aeceed86da14abaf7417b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52e1635631b342803aecaf81a362c1464e3da2e5\", \"lessThan\": \"b86762dbe19a62e785c189f313cda5b989931f37\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv6/route.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.317\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.279\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.221\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv6/route.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f0cda984e4e634b221dbf9642b8ecc5b4806b41e\"}, {\"url\": \"https://git.kernel.org/stable/c/d66fc4826127c82f99c4033380f8e93833d331c7\"}, {\"url\": \"https://git.kernel.org/stable/c/1ed9849fdf9a1a617129346b11d2094ca26828dc\"}, {\"url\": \"https://git.kernel.org/stable/c/569c9d9ea6648d099187527b93982f406ddcebc0\"}, {\"url\": \"https://git.kernel.org/stable/c/51ee2f7c30790799d0ec30c0ce0c743e58f046f2\"}, {\"url\": \"https://git.kernel.org/stable/c/73e7c8ca6ad76f29b2c99c20845a6f3b203ff0c6\"}, {\"url\": \"https://git.kernel.org/stable/c/6eed6d3cd19ff3cfa83aeceed86da14abaf7417b\"}, {\"url\": \"https://git.kernel.org/stable/c/b86762dbe19a62e785c189f313cda5b989931f37\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: prevent possible NULL dereference in rt6_probe()\\n\\nsyzbot caught a NULL dereference in rt6_probe() [1]\\n\\nBail out if  __in6_dev_get() returns NULL.\\n\\n[1]\\nOops: general protection fault, probably for non-canonical address 0xdffffc00000000cb: 0000 [#1] PREEMPT SMP KASAN PTI\\nKASAN: null-ptr-deref in range [0x0000000000000658-0x000000000000065f]\\nCPU: 1 PID: 22444 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00383-gb8481381d4e2 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\\n RIP: 0010:rt6_probe net/ipv6/route.c:656 [inline]\\n RIP: 0010:find_match+0x8c4/0xf50 net/ipv6/route.c:758\\nCode: 14 fd f7 48 8b 85 38 ff ff ff 48 c7 45 b0 00 00 00 00 48 8d b8 5c 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19\\nRSP: 0018:ffffc900034af070 EFLAGS: 00010203\\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004521000\\nRDX: 00000000000000cb RSI: ffffffff8990d0cd RDI: 000000000000065c\\nRBP: ffffc900034af150 R08: 0000000000000005 R09: 0000000000000000\\nR10: 0000000000000001 R11: 0000000000000002 R12: 000000000000000a\\nR13: 1ffff92000695e18 R14: ffff8880244a1d20 R15: 0000000000000000\\nFS:  00007f4844a5a6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000001b31b27000 CR3: 000000002d42c000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n \u003cTASK\u003e\\n  rt6_nh_find_match+0xfa/0x1a0 net/ipv6/route.c:784\\n  nexthop_for_each_fib6_nh+0x26d/0x4a0 net/ipv4/nexthop.c:1496\\n  __find_rr_leaf+0x6e7/0xe00 net/ipv6/route.c:825\\n  find_rr_leaf net/ipv6/route.c:853 [inline]\\n  rt6_select net/ipv6/route.c:897 [inline]\\n  fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2195\\n  ip6_pol_route+0x1cd/0x1150 net/ipv6/route.c:2231\\n  pol_lookup_func include/net/ip6_fib.h:616 [inline]\\n  fib6_rule_lookup+0x386/0x720 net/ipv6/fib6_rules.c:121\\n  ip6_route_output_flags_noref net/ipv6/route.c:2639 [inline]\\n  ip6_route_output_flags+0x1d0/0x640 net/ipv6/route.c:2651\\n  ip6_dst_lookup_tail.constprop.0+0x961/0x1760 net/ipv6/ip6_output.c:1147\\n  ip6_dst_lookup_flow+0x99/0x1d0 net/ipv6/ip6_output.c:1250\\n  rawv6_sendmsg+0xdab/0x4340 net/ipv6/raw.c:898\\n  inet_sendmsg+0x119/0x140 net/ipv4/af_inet.c:853\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg net/socket.c:745 [inline]\\n  sock_write_iter+0x4b8/0x5c0 net/socket.c:1160\\n  new_sync_write fs/read_write.c:497 [inline]\\n  vfs_write+0x6b6/0x1140 fs/read_write.c:590\\n  ksys_write+0x1f8/0x260 fs/read_write.c:643\\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n  do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.317\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.279\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.221\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.162\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.96\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.36\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.7\", \"versionStartIncluding\": \"2.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"2.6.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:18:50.532Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40960\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T21:58:25.917Z\", \"dateReserved\": \"2024-07-12T12:17:45.594Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:32:01.939Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.