{ "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": "2026-05-11T20:56:27.433Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:56:27.433Z" }, "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" } } ] } }