{"id":"CVE-2024-33621","revision":null,"records":[{"revision":"e352bef477e74c90b3682cb1b7fc6f77","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-33621","aliases":[],"title":"ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound\n\nRaw packet from PF_PACKET socket ontop of an IPv6-backed ipvlan device will\nhit WARN_ON_ONCE() in sk_mc_loop() through sch_direct_xmit() path.\n\nWARNING: CPU: 2 PID: 0 at net/core/sock.c:775 sk_mc_loop+0x2d/0x70\nModules linked in: sch_netem ipvlan rfkill cirrus drm_shmem_helper sg drm_kms_helper\nCPU: 2 PID: 0 Comm: swapper/2 Kdump: loaded Not tainted 6.9.0+ #279\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nRIP: 0010:sk_mc_loop+0x2d/0x70\nCode: fa 0f 1f 44 00 00 65 0f b7 15 f7 96 a3 4f 31 c0 66 85 d2 75 26 48 85 ff 74 1c\nRSP: 0018:ffffa9584015cd78 EFLAGS: 00010212\nRAX: 0000000000000011 RBX: ffff91e585793e00 RCX: 0000000002c6a001\nRDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff91e589c0f000\nRBP: ffff91e5855bd100 R08: 0000000000000000 R09: 3d00545216f43d00\nR10: ffff91e584fdcc50 R11: 00000060dd8616f4 R12: ffff91e58132d000\nR13: ffff91e584fdcc68 R14: ffff91e5869ce800 R15: ffff91e589c0f000\nFS: 0000000000000000(0000) GS:ffff91e898100000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f788f7c44c0 CR3: 0000000008e1a000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\n ? __warn (kernel/panic.c:693)\n ? sk_mc_loop (net/core/sock.c:760)\n ? report_bug (lib/bug.c:201 lib/bug.c:219)\n ? handle_bug (arch/x86/kernel/traps.c:239)\n ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\n ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)\n ? sk_mc_loop (net/core/sock.c:760)\n ip6_finish_output2 (net/ipv6/ip6_output.c:83 (discriminator 1))\n ? nf_hook_slow (net/netfilter/core.c:626)\n ip6_finish_output (net/ipv6/ip6_output.c:222)\n ? __pfx_ip6_finish_output (net/ipv6/ip6_output.c:215)\n ipvlan_xmit_mode_l3 (drivers/net/ipvlan/ipvlan_core.c:602) ipvlan\n ipvlan_start_xmit (drivers/net/ipvlan/ipvlan_main.c:226) ipvlan\n dev_hard_start_xmit (net/core/dev.c:3594)\n sch_direct_xmit (net/sched/sch_generic.c:343)\n __qdisc_run (net/sched/sch_generic.c:416)\n net_tx_action (net/core/dev.c:5286)\n handle_softirqs (kernel/softirq.c:555)\n __irq_exit_rcu (kernel/softirq.c:589)\n sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043)\n\nThe warning triggers as this:\npacket_sendmsg\n packet_snd //skb->sk is packet sk\n __dev_queue_xmit\n __dev_xmit_skb //q->enqueue is not NULL\n __qdisc_run\n sch_direct_xmit\n dev_hard_start_xmit\n ipvlan_start_xmit\n ipvlan_xmit_mode_l3 //l3 mode\n ipvlan_process_outbound //vepa flag\n ipvlan_process_v6_outbound\n ip6_local_out\n __ip6_finish_output\n ip6_finish_output2 //multicast packet\n sk_mc_loop //sk->sk_family is AF_PACKET\n\nCall ip{6}_local_out() with NULL sk in ipvlan as other tunnels to fix this.","state":0,"publishedAt":"2024-06-21T10:18:05.673+00:00","modifiedAt":"2026-10-15T00:40:42.015+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/ipvlan/ipvlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"0049a623dfbbb49888de7f0c2f33a582b5ead989\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"54768bacfde60e8e4757968d79f8726711dd2cf5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"1abbf079da59ef559d0ab4219d2a0302f7970761\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"183c4b416454b9983dc1b8aa0022b748911adc48\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"cb53706a3403ba67f4040b2a82d9cf79e11b1a48\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"54213c09801e0bd2549ac42961093be36f65a7d0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"13c4543db34e0da5a7d2f550b6262d860f248381\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\",\n \"lessThan\": \"b3dc6e8003b500861fa307e9a3400c52e78e4d3a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/ipvlan/ipvlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.19\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.19\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.316\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.278\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.219\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.161\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.93\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.33\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9.4\",\n \"lessThanOrEqual\": \"6.9.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.10\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/0049a623dfbbb49888de7f0c2f33a582b5ead989","https://git.kernel.org/stable/c/54768bacfde60e8e4757968d79f8726711dd2cf5","https://git.kernel.org/stable/c/1abbf079da59ef559d0ab4219d2a0302f7970761","https://git.kernel.org/stable/c/183c4b416454b9983dc1b8aa0022b748911adc48","https://git.kernel.org/stable/c/cb53706a3403ba67f4040b2a82d9cf79e11b1a48","https://git.kernel.org/stable/c/54213c09801e0bd2549ac42961093be36f65a7d0","https://git.kernel.org/stable/c/13c4543db34e0da5a7d2f550b6262d860f248381","https://git.kernel.org/stable/c/b3dc6e8003b500861fa307e9a3400c52e78e4d3a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-33621","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-33621","identifiers":["CVE-2024-33621"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T21:04:24.7578035+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-09T21:04:24.7578035+00:00","lastSuccessAt":"2026-11-09T21:04:24.9268553+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:24.9268558+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-053f9ef31f64a58e1cca81479dcc447749281d31bad8cf441e11bc47a86a0a95","complete":true,"records":421662,"lastAttemptAt":"2026-11-09T21:02:16.6599285+00:00","lastSuccessAt":"2026-11-09T21:02:16.5514646+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:02:16.6599285+00:00","snapshotPublishedAt":"2026-11-09T20:28:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-c0d08c6d568c485b97f7477173a8f37a","complete":false,"records":13661,"lastAttemptAt":"2026-11-09T21:17:08.552025+00:00","lastSuccessAt":"2026-11-09T21:17:08.543+00:00","error":"19 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T21:17:08.543+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13205,"expectedIdentifiers":13714,"failedIdentifiers":19},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T21:04:24.7578035+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T21:04:24.7578035+00:00","lastSuccessAt":"2026-11-09T21:04:28.0976125+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:28.0976126+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-0bbee8bbb4ab420e9cc5a178c14c3d7c","complete":false,"records":13673,"lastAttemptAt":"2026-11-09T21:04:53.6647083+00:00","lastSuccessAt":"2026-11-09T21:04:53.656+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:53.656+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13704,"expectedIdentifiers":13714,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-f3867a42f9521b26d30bf45a82113d9245ec430c8ce8e24ac384524aacc94234","complete":true,"records":9916,"lastAttemptAt":"2026-11-09T21:04:24.6555906+00:00","lastSuccessAt":"2026-11-09T21:04:24.2243141+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:24.6555906+00:00","snapshotPublishedAt":"2026-11-09T21:03:14+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T21:02:20.5882227+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:02:20.5882227+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-761ecc9061239b0da572dc9254c6f384c1d19339eb08408c436647a2f26129e9","complete":true,"records":3064,"lastAttemptAt":"2026-11-09T21:04:24.720759+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:24.720759+00:00","snapshotPublishedAt":"2026-11-09T16:33:20+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-2e8b7295933e7bde85a0f6f5814c210f0d64871f05755388951863da683dd321","complete":true,"records":231324,"lastAttemptAt":"2026-11-09T21:04:14.5816688+00:00","lastSuccessAt":"2026-11-09T21:04:13.103121+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:14.5816688+00:00","snapshotPublishedAt":"2026-11-09T20:48:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}