{"id":"CVE-2024-47684","revision":null,"records":[{"revision":"09a4695967a54dd9876033911c7c0465","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-47684","aliases":[],"title":"tcp: check skb is non-NULL in tcp_rto_delta_us()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: check skb is non-NULL in tcp_rto_delta_us()\n\nWe have some machines running stock Ubuntu 20.04.6 which is their 5.4.0-174-generic\nkernel that are running ceph and recently hit a null ptr dereference in\ntcp_rearm_rto(). Initially hitting it from the TLP path, but then later we also\nsaw it getting hit from the RACK case as well. Here are examples of the oops\nmessages we saw in each of those cases:\n\nJul 26 15:05:02 rx [11061395.780353] BUG: kernel NULL pointer dereference, address: 0000000000000020\nJul 26 15:05:02 rx [11061395.787572] #PF: supervisor read access in kernel mode\nJul 26 15:05:02 rx [11061395.792971] #PF: error_code(0x0000) - not-present page\nJul 26 15:05:02 rx [11061395.798362] PGD 0 P4D 0\nJul 26 15:05:02 rx [11061395.801164] Oops: 0000 [#1] SMP NOPTI\nJul 26 15:05:02 rx [11061395.805091] CPU: 0 PID: 9180 Comm: msgr-worker-1 Tainted: G W 5.4.0-174-generic #193-Ubuntu\nJul 26 15:05:02 rx [11061395.814996] Hardware name: Supermicro SMC 2x26 os-gen8 64C NVME-Y 256G/H12SSW-NTR, BIOS 2.5.V1.2U.NVMe.UEFI 05/09/2023\nJul 26 15:05:02 rx [11061395.825952] RIP: 0010:tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.830656] Code: 87 ca 04 00 00 00 5b 41 5c 41 5d 5d c3 c3 49 8b bc 24 40 06 00 00 eb 8d 48 bb cf f7 53 e3 a5 9b c4 20 4c 89 ef e8 0c fe 0e 00 <48> 8b 78 20 48 c1 ef 03 48 89 f8 41 8b bc 24 80 04 00 00 48 f7 e3\nJul 26 15:05:02 rx [11061395.849665] RSP: 0018:ffffb75d40003e08 EFLAGS: 00010246\nJul 26 15:05:02 rx [11061395.855149] RAX: 0000000000000000 RBX: 20c49ba5e353f7cf RCX: 0000000000000000\nJul 26 15:05:02 rx [11061395.862542] RDX: 0000000062177c30 RSI: 000000000000231c RDI: ffff9874ad283a60\nJul 26 15:05:02 rx [11061395.869933] RBP: ffffb75d40003e20 R08: 0000000000000000 R09: ffff987605e20aa8\nJul 26 15:05:02 rx [11061395.877318] R10: ffffb75d40003f00 R11: ffffb75d4460f740 R12: ffff9874ad283900\nJul 26 15:05:02 rx [11061395.884710] R13: ffff9874ad283a60 R14: ffff9874ad283980 R15: ffff9874ad283d30\nJul 26 15:05:02 rx [11061395.892095] FS: 00007f1ef4a2e700(0000) GS:ffff987605e00000(0000) knlGS:0000000000000000\nJul 26 15:05:02 rx [11061395.900438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nJul 26 15:05:02 rx [11061395.906435] CR2: 0000000000000020 CR3: 0000003e450ba003 CR4: 0000000000760ef0\nJul 26 15:05:02 rx [11061395.913822] PKRU: 55555554\nJul 26 15:05:02 rx [11061395.916786] Call Trace:\nJul 26 15:05:02 rx [11061395.919488]\nJul 26 15:05:02 rx [11061395.921765] ? show_regs.cold+0x1a/0x1f\nJul 26 15:05:02 rx [11061395.925859] ? __die+0x90/0xd9\nJul 26 15:05:02 rx [11061395.929169] ? no_context+0x196/0x380\nJul 26 15:05:02 rx [11061395.933088] ? ip6_protocol_deliver_rcu+0x4e0/0x4e0\nJul 26 15:05:02 rx [11061395.938216] ? ip6_sublist_rcv_finish+0x3d/0x50\nJul 26 15:05:02 rx [11061395.943000] ? __bad_area_nosemaphore+0x50/0x1a0\nJul 26 15:05:02 rx [11061395.947873] ? bad_area_nosemaphore+0x16/0x20\nJul 26 15:05:02 rx [11061395.952486] ? do_user_addr_fault+0x267/0x450\nJul 26 15:05:02 rx [11061395.957104] ? ipv6_list_rcv+0x112/0x140\nJul 26 15:05:02 rx [11061395.961279] ? __do_page_fault+0x58/0x90\nJul 26 15:05:02 rx [11061395.965458] ? do_page_fault+0x2c/0xe0\nJul 26 15:05:02 rx [11061395.969465] ? page_fault+0x34/0x40\nJul 26 15:05:02 rx [11061395.973217] ? tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.977313] ? tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.981408] tcp_send_loss_probe+0x10b/0x220\nJul 26 15:05:02 rx [11061395.985937] tcp_write_timer_handler+0x1b4/0x240\nJul 26 15:05:02 rx [11061395.990809] tcp_write_timer+0x9e/0xe0\nJul 26 15:05:02 rx [11061395.994814] ? tcp_write_timer_handler+0x240/0x240\nJul 26 15:05:02 rx [11061395.999866] call_timer_fn+0x32/0x130\nJul 26 15:05:02 rx [11061396.003782] __run_timers.part.0+0x180/0x280\nJul 26 15:05:02 rx [11061396.008309] ? recalibrate_cpu_khz+0x10/0x10\nJul 26 15:05:02 rx [11061396.012841] ? native_x2apic_icr_write+0x30/0x30\nJul 26 15:05:02 rx [11061396.017718] ? lapic_next_even\n---truncated---","state":0,"publishedAt":"2024-10-21T11:53:25.787+00:00","modifiedAt":"2026-10-15T00:51:12.984+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 \"include/net/tcp.h\"\n ],\n \"versions\": [\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"ad4f0a14d6856e68f023fc4e5017cfd881a3dfbc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"16e0387d87fc858e34449fdf2b14ed5837f761db\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"ec31cf42fc4e35bb1248ce6eb1de6de9f851ac86\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"5c4c03288a4aea705e36aa44119c13d7ee4dce99\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"96c4983eab2a5da235f7fff90beaf17b008ba029\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"570f7d8c9bf14f041152ba8353d4330ef7575915\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"81d18c152e3f82bacadf83bc0a471b2363b9cc18\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"09aea49fbc7e755a915c405644f347137cdb62b0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e1a10ef7fa876f8510aaec36ea5c0cf34baba410\",\n \"lessThan\": \"c8770db2d54437a5f49417ae7b46f7de23d14db6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"42a858e036bb26cb559157393b7890cabe70bfc2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.10.108\",\n \"lessThan\": \"3.11\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\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 \"include/net/tcp.h\"\n ],\n \"versions\": [\n {\n \"version\": \"4.13\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.13\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.323\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.285\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.227\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.168\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.113\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.54\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.10.13\",\n \"lessThanOrEqual\": \"6.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.11.2\",\n \"lessThanOrEqual\": \"6.11.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ad4f0a14d6856e68f023fc4e5017cfd881a3dfbc","https://git.kernel.org/stable/c/16e0387d87fc858e34449fdf2b14ed5837f761db","https://git.kernel.org/stable/c/ec31cf42fc4e35bb1248ce6eb1de6de9f851ac86","https://git.kernel.org/stable/c/5c4c03288a4aea705e36aa44119c13d7ee4dce99","https://git.kernel.org/stable/c/96c4983eab2a5da235f7fff90beaf17b008ba029","https://git.kernel.org/stable/c/570f7d8c9bf14f041152ba8353d4330ef7575915","https://git.kernel.org/stable/c/81d18c152e3f82bacadf83bc0a471b2363b9cc18","https://git.kernel.org/stable/c/09aea49fbc7e755a915c405644f347137cdb62b0","https://git.kernel.org/stable/c/c8770db2d54437a5f49417ae7b46f7de23d14db6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-47684","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-47684","identifiers":["CVE-2024-47684"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T20:04:25.0077254+00:00","complete":true,"records":1772,"lastAttemptAt":"2026-11-09T20:04:25.0077254+00:00","lastSuccessAt":"2026-11-09T20:04:25.1926568+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:25.192657+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-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-4a9560b8b58726018512a0a26f2f2de094eec0a9257ebc797e76aa7229628f6d","complete":true,"records":421528,"lastAttemptAt":"2026-11-09T20:02:23.7922996+00:00","lastSuccessAt":"2026-11-09T20:02:23.6346925+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:02:23.7922996+00:00","snapshotPublishedAt":"2026-11-09T19:26:49+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-7062dd6d7628421ab96b6fad5e9e5783","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T20:16:49.2041123+00:00","lastSuccessAt":"2026-11-09T20:16:49.199+00:00","error":"9 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T20:16:49.199+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13314,"expectedIdentifiers":13707,"failedIdentifiers":9},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T20:04:25.0077254+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T20:04:25.0077254+00:00","lastSuccessAt":"2026-11-09T20:04:25.193761+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:25.1937612+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-9938fd6291bf40d68f5b1fd395158ad4","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T20:04:38.0577664+00:00","lastSuccessAt":"2026-11-09T20:04:38.055+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:38.055+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"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-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T20:04:24.9600639+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:24.9600639+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+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-712163772d637a9cfaa34d4241efb9e9d0ccd6149596c672c613d362f44af841","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T20:02:23.9593912+00:00","lastSuccessAt":"2026-11-09T18:02:23.0088273+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:02:23.9593912+00:00","snapshotPublishedAt":"2026-11-09T17:03:01+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":"2026-11-09T20:04:24.9750181+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:24.9750181+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-604a3d0f2ac3a85e07b87120f064f717efb18ea8fa81b2bec8e0f33ba949fa25","complete":true,"records":231321,"lastAttemptAt":"2026-11-09T20:04:24.8172812+00:00","lastSuccessAt":"2026-11-09T20:04:23.3062045+00:00","error":null,"lastVerifiedAt":"2026-11-09T20:04:24.8172812+00:00","snapshotPublishedAt":"2026-11-09T19:33:14+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}