{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-56643","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-12-27T15:00:39.840Z","datePublished":"2024-12-27T15:02:44.492Z","dateUpdated":"2025-11-03T20:51:45.595Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T10:00:51.915Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: Fix memory leak in dccp_feat_change_recv\n\nIf dccp_feat_push_confirm() fails after new value for SP feature was accepted\nwithout reconciliation ('entry == NULL' branch), memory allocated for that value\nwith dccp_feat_clone_sp_val() is never freed.\n\nHere is the kmemleak stack for this:\n\nunreferenced object 0xffff88801d4ab488 (size 8):\n  comm \"syz-executor310\", pid 1127, jiffies 4295085598 (age 41.666s)\n  hex dump (first 8 bytes):\n    01 b4 4a 1d 80 88 ff ff                          ..J.....\n  backtrace:\n    [<00000000db7cabfe>] kmemdup+0x23/0x50 mm/util.c:128\n    [<0000000019b38405>] kmemdup include/linux/string.h:465 [inline]\n    [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:371 [inline]\n    [<0000000019b38405>] dccp_feat_clone_sp_val net/dccp/feat.c:367 [inline]\n    [<0000000019b38405>] dccp_feat_change_recv net/dccp/feat.c:1145 [inline]\n    [<0000000019b38405>] dccp_feat_parse_options+0x1196/0x2180 net/dccp/feat.c:1416\n    [<00000000b1f6d94a>] dccp_parse_options+0xa2a/0x1260 net/dccp/options.c:125\n    [<0000000030d7b621>] dccp_rcv_state_process+0x197/0x13d0 net/dccp/input.c:650\n    [<000000001f74c72e>] dccp_v4_do_rcv+0xf9/0x1a0 net/dccp/ipv4.c:688\n    [<00000000a6c24128>] sk_backlog_rcv include/net/sock.h:1041 [inline]\n    [<00000000a6c24128>] __release_sock+0x139/0x3b0 net/core/sock.c:2570\n    [<00000000cf1f3a53>] release_sock+0x54/0x1b0 net/core/sock.c:3111\n    [<000000008422fa23>] inet_wait_for_connect net/ipv4/af_inet.c:603 [inline]\n    [<000000008422fa23>] __inet_stream_connect+0x5d0/0xf70 net/ipv4/af_inet.c:696\n    [<0000000015b6f64d>] inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:735\n    [<0000000010122488>] __sys_connect_file+0x15c/0x1a0 net/socket.c:1865\n    [<00000000b4b70023>] __sys_connect+0x165/0x1a0 net/socket.c:1882\n    [<00000000f4cb3815>] __do_sys_connect net/socket.c:1892 [inline]\n    [<00000000f4cb3815>] __se_sys_connect net/socket.c:1889 [inline]\n    [<00000000f4cb3815>] __x64_sys_connect+0x6e/0xb0 net/socket.c:1889\n    [<00000000e7b1e839>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n    [<0000000055e91434>] entry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nClean up the allocated memory in case of dccp_feat_push_confirm() failure\nand bail out with an error reset code.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/dccp/feat.c"],"versions":[{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"623be080ab3c13d71570bd32f7202a8efa8e2252","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"c99507fff94b926fc92279c92d80f229c91cb85d","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"bc3d4423def1a9412a0ae454cb4477089ab79276","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"6ff67909ee2ffad911e3122616df41dee23ff4f6","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"d3ec686a369fae5034303061f003cd3f94ddfd23","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"9ee68b0f23706a77f53c832457b9384178b76421","status":"affected","versionType":"git"},{"version":"e77b8363b2ea7c0d89919547c1a8b0562f298b57","lessThan":"22be4727a8f898442066bcac34f8a1ad0bc72e14","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/dccp/feat.c"],"versions":[{"version":"2.6.29","status":"affected"},{"version":"0","lessThan":"2.6.29","status":"unaffected","versionType":"semver"},{"version":"5.4.287","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.231","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.174","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.120","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.66","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.5","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.4.287"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.231"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.174"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.66"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/623be080ab3c13d71570bd32f7202a8efa8e2252"},{"url":"https://git.kernel.org/stable/c/c99507fff94b926fc92279c92d80f229c91cb85d"},{"url":"https://git.kernel.org/stable/c/bc3d4423def1a9412a0ae454cb4477089ab79276"},{"url":"https://git.kernel.org/stable/c/6ff67909ee2ffad911e3122616df41dee23ff4f6"},{"url":"https://git.kernel.org/stable/c/d3ec686a369fae5034303061f003cd3f94ddfd23"},{"url":"https://git.kernel.org/stable/c/9ee68b0f23706a77f53c832457b9384178b76421"},{"url":"https://git.kernel.org/stable/c/22be4727a8f898442066bcac34f8a1ad0bc72e14"}],"title":"dccp: Fix memory leak in dccp_feat_change_recv","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":3.3,"attackVector":"LOCAL","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-56643","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-04-17T20:10:38.316606Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-17T20:15:52.853Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T20:51:45.595Z"}}]}}