{"id":"CVE-2024-42321","state":"PUBLISHED","title":"net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: flow_dissector: use DEBUG_NET_WARN_ON_ONCE\n\nThe following splat is easy to reproduce upstream as well as in -stable\nkernels. Florian Westphal provided the following commit:\n\n  d1dab4f71d37 (\"net: add and use __skb_get_hash_symmetric_net\")\n\nbut this complementary fix has been also suggested by Willem de Bruijn\nand it can be easily backported to -stable kernel which consists in\nusing DEBUG_NET_WARN_ON_ONCE instead to silence the following splat\ngiven __skb_get_hash() is used by the nftables tracing infrastructure to\nto identify packets in traces.\n\n[69133.561393] ------------[ cut here ]------------\n[69133.561404] WARNING: CPU: 0 PID: 43576 at net/core/flow_dissector.c:1104 __skb_flow_dissect+0x134f/\n[...]\n[69133.561944] CPU: 0 PID: 43576 Comm: socat Not tainted 6.10.0-rc7+ #379\n[69133.561959] RIP: 0010:__skb_flow_dissect+0x134f/0x2ad0\n[69133.561970] Code: 83 f9 04 0f 84 b3 00 00 00 45 85 c9 0f 84 aa 00 00 00 41 83 f9 02 0f 84 81 fc ff\nff 44 0f b7 b4 24 80 00 00 00 e9 8b f9 ff ff <0f> 0b e9 20 f3 ff ff 41 f6 c6 20 0f 84 e4 ef ff ff 48 8d 7b 12 e8\n[69133.561979] RSP: 0018:ffffc90000006fc0 EFLAGS: 00010246\n[69133.561988] RAX: 0000000000000000 RBX: ffffffff82f33e20 RCX: ffffffff81ab7e19\n[69133.561994] RDX: dffffc0000000000 RSI: ffffc90000007388 RDI: ffff888103a1b418\n[69133.562001] RBP: ffffc90000007310 R08: 0000000000000000 R09: 0000000000000000\n[69133.562007] R10: ffffc90000007388 R11: ffffffff810cface R12: ffff888103a1b400\n[69133.562013] R13: 0000000000000000 R14: ffffffff82f33e2a R15: ffffffff82f33e28\n[69133.562020] FS:  00007f40f7131740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\n[69133.562027] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[69133.562033] CR2: 00007f40f7346ee0 CR3: 000000015d200001 CR4: 00000000001706f0\n[69133.562040] Call Trace:\n[69133.562044]  <IRQ>\n[69133.562049]  ? __warn+0x9f/0x1a0\n[ 1211.841384]  ? __skb_flow_dissect+0x107e/0x2860\n[...]\n[ 1211.841496]  ? bpf_flow_dissect+0x160/0x160\n[ 1211.841753]  __skb_get_hash+0x97/0x280\n[ 1211.841765]  ? __skb_get_hash_symmetric+0x230/0x230\n[ 1211.841776]  ? mod_find+0xbf/0xe0\n[ 1211.841786]  ? get_stack_info_noinstr+0x12/0xe0\n[ 1211.841798]  ? bpf_ksym_find+0x56/0xe0\n[ 1211.841807]  ? __rcu_read_unlock+0x2a/0x70\n[ 1211.841819]  nft_trace_init+0x1b9/0x1c0 [nf_tables]\n[ 1211.841895]  ? nft_trace_notify+0x830/0x830 [nf_tables]\n[ 1211.841964]  ? get_stack_info+0x2b/0x80\n[ 1211.841975]  ? nft_do_chain_arp+0x80/0x80 [nf_tables]\n[ 1211.842044]  nft_do_chain+0x79c/0x850 [nf_tables]","publishedAt":"2024-08-17T09:09:33.505Z","updatedAt":"2026-05-11T20:30:11.865Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"eb03d9826aa646577342a952d658d4598381c035","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"4afbac11f2f629d1e62817c4e210bdfaa7521107","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"c5d21aabf1b31a79f228508af33aee83456bc1b0","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"120f1c857a73e52132e473dee89b340440cb692b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/flow_dissector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.2","versionType":"semver"},{"version":"6.1.103","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.44","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.3","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/flow_dissector.c"]}],"references":["https://git.kernel.org/stable/c/eb03d9826aa646577342a952d658d4598381c035","https://git.kernel.org/stable/c/4afbac11f2f629d1e62817c4e210bdfaa7521107","https://git.kernel.org/stable/c/c5d21aabf1b31a79f228508af33aee83456bc1b0","https://git.kernel.org/stable/c/120f1c857a73e52132e473dee89b340440cb692b","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:47.831Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/42xxx/CVE-2024-42321.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-42321","state":"PUBLISHED","datePublished":"2024-08-17T09:09:33.505Z","dateUpdated":"2026-05-11T20:30:11.865Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-30T07:40:12.279Z"},"containers":{"cna":{"title":"net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: flow_dissector: use DEBUG_NET_WARN_ON_ONCE\n\nThe following splat is easy to reproduce upstream as well as in -stable\nkernels. Florian Westphal provided the following commit:\n\n  d1dab4f71d37 (\"net: add and use __skb_get_hash_symmetric_net\")\n\nbut this complementary fix has been also suggested by Willem de Bruijn\nand it can be easily backported to -stable kernel which consists in\nusing DEBUG_NET_WARN_ON_ONCE instead to silence the following splat\ngiven __skb_get_hash() is used by the nftables tracing infrastructure to\nto identify packets in traces.\n\n[69133.561393] ------------[ cut here ]------------\n[69133.561404] WARNING: CPU: 0 PID: 43576 at net/core/flow_dissector.c:1104 __skb_flow_dissect+0x134f/\n[...]\n[69133.561944] CPU: 0 PID: 43576 Comm: socat Not tainted 6.10.0-rc7+ #379\n[69133.561959] RIP: 0010:__skb_flow_dissect+0x134f/0x2ad0\n[69133.561970] Code: 83 f9 04 0f 84 b3 00 00 00 45 85 c9 0f 84 aa 00 00 00 41 83 f9 02 0f 84 81 fc ff\nff 44 0f b7 b4 24 80 00 00 00 e9 8b f9 ff ff <0f> 0b e9 20 f3 ff ff 41 f6 c6 20 0f 84 e4 ef ff ff 48 8d 7b 12 e8\n[69133.561979] RSP: 0018:ffffc90000006fc0 EFLAGS: 00010246\n[69133.561988] RAX: 0000000000000000 RBX: ffffffff82f33e20 RCX: ffffffff81ab7e19\n[69133.561994] RDX: dffffc0000000000 RSI: ffffc90000007388 RDI: ffff888103a1b418\n[69133.562001] RBP: ffffc90000007310 R08: 0000000000000000 R09: 0000000000000000\n[69133.562007] R10: ffffc90000007388 R11: ffffffff810cface R12: ffff888103a1b400\n[69133.562013] R13: 0000000000000000 R14: ffffffff82f33e2a R15: ffffffff82f33e28\n[69133.562020] FS:  00007f40f7131740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\n[69133.562027] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[69133.562033] CR2: 00007f40f7346ee0 CR3: 000000015d200001 CR4: 00000000001706f0\n[69133.562040] Call Trace:\n[69133.562044]  <IRQ>\n[69133.562049]  ? __warn+0x9f/0x1a0\n[ 1211.841384]  ? __skb_flow_dissect+0x107e/0x2860\n[...]\n[ 1211.841496]  ? bpf_flow_dissect+0x160/0x160\n[ 1211.841753]  __skb_get_hash+0x97/0x280\n[ 1211.841765]  ? __skb_get_hash_symmetric+0x230/0x230\n[ 1211.841776]  ? mod_find+0xbf/0xe0\n[ 1211.841786]  ? get_stack_info_noinstr+0x12/0xe0\n[ 1211.841798]  ? bpf_ksym_find+0x56/0xe0\n[ 1211.841807]  ? __rcu_read_unlock+0x2a/0x70\n[ 1211.841819]  nft_trace_init+0x1b9/0x1c0 [nf_tables]\n[ 1211.841895]  ? nft_trace_notify+0x830/0x830 [nf_tables]\n[ 1211.841964]  ? get_stack_info+0x2b/0x80\n[ 1211.841975]  ? nft_do_chain_arp+0x80/0x80 [nf_tables]\n[ 1211.842044]  nft_do_chain+0x79c/0x850 [nf_tables]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"eb03d9826aa646577342a952d658d4598381c035","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"4afbac11f2f629d1e62817c4e210bdfaa7521107","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"c5d21aabf1b31a79f228508af33aee83456bc1b0","versionType":"git"},{"version":"9b52e3f267a6835efd50ed9002d530666d16a411","status":"affected","lessThan":"120f1c857a73e52132e473dee89b340440cb692b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/flow_dissector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.2","versionType":"semver"},{"version":"6.1.103","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.44","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.3","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/flow_dissector.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/eb03d9826aa646577342a952d658d4598381c035"},{"url":"https://git.kernel.org/stable/c/4afbac11f2f629d1e62817c4e210bdfaa7521107"},{"url":"https://git.kernel.org/stable/c/c5d21aabf1b31a79f228508af33aee83456bc1b0"},{"url":"https://git.kernel.org/stable/c/120f1c857a73e52132e473dee89b340440cb692b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:30:11.865Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.1.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.6.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.10.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.11"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-42321","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:09:25.850374Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-12T17:33:25.817Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T22:04:40.152Z"}}]}}}