{"schema":"threatline.record/2","record":{"id":"CVE-2026-99037","aliases":[],"summary":"dm-crypt: reject the lmk IV mode with AEAD ciphers","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-crypt: reject the lmk IV mode with AEAD ciphers\n\nA \"capi:\" table line that pairs an AEAD cipher with the lmk IV mode,\nfor example \"capi:gcm(aes)-lmk\" with the integrity:28:aead option,\ncauses an oops when it is loaded. lmk sets tfms_count to 64, but\ncrypt_alloc_tfms_aead only allocates one transform, so crypt_setkey\nreads past the end of the tfms_aead array and calls crypto_aead_setkey\non the values it finds there.\n\nlmk exists for compatibility with Loop-AES, which uses CBC, so refuse\nit with an AEAD cipher rather than allocate 64 AEAD transforms. The\ncheck cannot go in crypt_iv_lmk_ctr with the other lmk checks, because\nthe IV constructor runs after crypt_set_key.\n\nNote that this is not a security bug because the memory corruption can\nonly be triggered by root.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"33d2f09fcb357fd1861c4959d1d3505492bf91f8","lessThan":"9a0dab8a9d9975dec14a118b55cae2517aea5ca9","status":"affected","versionType":"git"},{"version":"33d2f09fcb357fd1861c4959d1d3505492bf91f8","lessThan":"962ce265fbf5d87afeb78cf19c12e083ab0ffeb8","status":"affected","versionType":"git"},{"version":"33d2f09fcb357fd1861c4959d1d3505492bf91f8","lessThan":"a1a875614dae43b43d311bb9e7a7a70eed78efe6","status":"affected","versionType":"git"},{"version":"33d2f09fcb357fd1861c4959d1d3505492bf91f8","lessThan":"40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f","status":"affected","versionType":"git"},{"version":"33d2f09fcb357fd1861c4959d1d3505492bf91f8","lessThan":"3195e0daf590683992edb4eed32269e569e04924","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"9a0dab8a9d9975dec14a118b55cae2517aea5ca9","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"962ce265fbf5d87afeb78cf19c12e083ab0ffeb8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","source_modified_at":"2026-10-23T12:21:54.317Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"3195e0daf590683992edb4eed32269e569e04924","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T12:21:54.317Z","modified_at":"2026-10-23T12:21:54.317Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99037","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:21:54.317Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/9a0dab8a9d9975dec14a118b55cae2517aea5ca9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/962ce265fbf5d87afeb78cf19c12e083ab0ffeb8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a1a875614dae43b43d311bb9e7a7a70eed78efe6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3195e0daf590683992edb4eed32269e569e04924"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T12:21:54.317Z","content_hash":"c2b71b179d095c42eefad831137b10d5ffd2535a6280e583653c491cf5f6bb3a"}}