{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-56643", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-56643", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-12-27T15:02:44.492Z", "updatedAt": "2026-05-11T20:56:27.433Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "dccp: Fix memory leak in dccp_feat_change_recv", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "623be080ab3c13d71570bd32f7202a8efa8e2252" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "c99507fff94b926fc92279c92d80f229c91cb85d" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "bc3d4423def1a9412a0ae454cb4477089ab79276" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "6ff67909ee2ffad911e3122616df41dee23ff4f6" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "d3ec686a369fae5034303061f003cd3f94ddfd23" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "9ee68b0f23706a77f53c832457b9384178b76421" }, { "version": "e77b8363b2ea7c0d89919547c1a8b0562f298b57", "status": "affected", "versionType": "git", "lessThan": "22be4727a8f898442066bcac34f8a1ad0bc72e14" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.29", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.29" }, { "version": "5.4.287", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.231", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.174", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.120", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.66", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }