{"id":"CVE-2026-64548","revision":null,"records":[{"revision":"072cc8e218a34554a5fd037c399bf04e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64548","aliases":[],"title":"bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()\n\nWhen the scatterlist ring is full or nearly full, bpf_msg_push_data()\nenters a copy fallback path and computes copy + len for the page\nallocation size. Since len comes from BPF with arg3_type = ARG_ANYTHING\nand both are u32, a crafted len can wrap the sum to a small value,\ncausing an undersized allocation followed by an out-of-bounds memcpy.\n\n BUG: unable to handle page fault for address: ffffed104089a402\n Oops: Oops: 0000 [#1] SMP KASAN NOPTI\n Call Trace:\n __asan_memcpy (mm/kasan/shadow.c:105)\n bpf_msg_push_data (net/core/filter.c:2852 net/core/filter.c:2788)\n bpf_prog_9ed8b5711920a7d7+0x2e/0x36\n sk_psock_msg_verdict (net/core/skmsg.c:934)\n tcp_bpf_sendmsg (net/ipv4/tcp_bpf.c:421 net/ipv4/tcp_bpf.c:584)\n __sys_sendto (net/socket.c:2206)\n do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nAdd an overflow check before the allocation.","state":0,"publishedAt":"2026-07-27T20:10:38.355+00:00","modifiedAt":"2026-10-19T20:48:40.311+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 \"net/core/filter.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"f1644c9508d24f50dd9e8ebe8d3ba86e0996d2f5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"a12b1575f9feabd91695a9e9d004862f7195fa25\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"ff39d0e3b4feeb65ca43c453d7c75fdf872ded0d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"888706a76286c547bd035432602571e8024b5305\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"db77b6bb6e6edb79b10b4efcce346eec5582d588\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"4e40056bb5c829f0423f0a6694a0477726d2147e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"bd004716ba75fed6d185795c85cdc92540ebeaab\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6fff607e2f14bd7c63c06c464a6f93b8efbabe28\",\n \"lessThan\": \"0c0a8ed85349dae298712d79cb276acfeb794d82\",\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 \"net/core/filter.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.20\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.20\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.261\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.212\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.97\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.40\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.5\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f1644c9508d24f50dd9e8ebe8d3ba86e0996d2f5","https://git.kernel.org/stable/c/a12b1575f9feabd91695a9e9d004862f7195fa25","https://git.kernel.org/stable/c/ff39d0e3b4feeb65ca43c453d7c75fdf872ded0d","https://git.kernel.org/stable/c/888706a76286c547bd035432602571e8024b5305","https://git.kernel.org/stable/c/db77b6bb6e6edb79b10b4efcce346eec5582d588","https://git.kernel.org/stable/c/4e40056bb5c829f0423f0a6694a0477726d2147e","https://git.kernel.org/stable/c/bd004716ba75fed6d185795c85cdc92540ebeaab","https://git.kernel.org/stable/c/0c0a8ed85349dae298712d79cb276acfeb794d82"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64548","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64548","identifiers":["CVE-2026-64548"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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