{"id":"CVE-2026-53090","revision":null,"records":[{"revision":"c932b749b06140b2838367b8ef15323e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53090","aliases":[],"title":"bpf: Fix ld_{abs,ind} failure path analysis in subprogs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix ld_{abs,ind} failure path analysis in subprogs\n\nUsage of ld_{abs,ind} instructions got extended into subprogs some time\nago via commit 09b28d76eac4 (\"bpf: Add abnormal return checks.\"). These\nare only allowed in subprograms when the latter are BTF annotated and\nhave scalar return types.\n\nThe code generator in bpf_gen_ld_abs() has an abnormal exit path (r0=0 +\nexit) from legacy cBPF times. While the enforcement is on scalar return\ntypes, the verifier must also simulate the path of abnormal exit if the\npacket data load via ld_{abs,ind} failed.\n\nThis is currently not the case. Fix it by having the verifier simulate\nboth success and failure paths, and extend it in similar ways as we do\nfor tail calls. The success path (r0=unknown, continue to next insn) is\npushed onto stack for later validation and the r0=0 and return to the\ncaller is done on the fall-through side.","state":0,"publishedAt":"2026-06-24T16:30:29.413+00:00","modifiedAt":"2026-10-19T19:47:16.504+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 \"kernel/bpf/verifier.c\"\n ],\n \"versions\": [\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"928d354ae3557e8f755a227e67be88034eb3cd7f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"de1055e7f9e67af32b1f3376066272b04e5223c0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"37ad2bb11e9de92cb7b94548705eeedd87f7d392\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"8674e2db06cff6b50f2216eed9a761d15425bb34\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"d846d83bdacbd8f14fc45c63b8c1d22608452e1c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"09b28d76eac48e922dc293da1aa2b2b85c32aeee\",\n \"lessThan\": \"ee861486e377edc55361c08dcbceab3f6b6577bd\",\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 \"kernel/bpf/verifier.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.10\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.10\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.265\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.216\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.183\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.148\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.101\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.42\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.10\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/928d354ae3557e8f755a227e67be88034eb3cd7f","https://git.kernel.org/stable/c/8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe","https://git.kernel.org/stable/c/de1055e7f9e67af32b1f3376066272b04e5223c0","https://git.kernel.org/stable/c/37ad2bb11e9de92cb7b94548705eeedd87f7d392","https://git.kernel.org/stable/c/8674e2db06cff6b50f2216eed9a761d15425bb34","https://git.kernel.org/stable/c/ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337","https://git.kernel.org/stable/c/d846d83bdacbd8f14fc45c63b8c1d22608452e1c","https://git.kernel.org/stable/c/ee861486e377edc55361c08dcbceab3f6b6577bd"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53090","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53090","identifiers":["CVE-2026-53090"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-08T19:47:20.1649891+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T19:47:20.1649891+00:00","lastSuccessAt":"2026-11-08T19:47:20.3951142+00:00","error":null,"lastVerifiedAt":"2026-11-08T19:47:20.3951146+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. 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