{"id":"CVE-2026-99037","revision":"941cd94e313447859a10a4888fca8a19","records":[{"revision":"941cd94e313447859a10a4888fca8a19","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-99037","aliases":[],"title":"dm-crypt: reject the lmk IV mode with AEAD ciphers","description":"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.","state":0,"publishedAt":"2026-10-23T12:21:54.317+00:00","modifiedAt":"2026-10-23T12:21:54.317+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                        \"drivers/md/dm-crypt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"33d2f09fcb357fd1861c4959d1d3505492bf91f8\",\n                            \"lessThan\": \"9a0dab8a9d9975dec14a118b55cae2517aea5ca9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"33d2f09fcb357fd1861c4959d1d3505492bf91f8\",\n                            \"lessThan\": \"962ce265fbf5d87afeb78cf19c12e083ab0ffeb8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"33d2f09fcb357fd1861c4959d1d3505492bf91f8\",\n                            \"lessThan\": \"a1a875614dae43b43d311bb9e7a7a70eed78efe6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"33d2f09fcb357fd1861c4959d1d3505492bf91f8\",\n                            \"lessThan\": \"40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"33d2f09fcb357fd1861c4959d1d3505492bf91f8\",\n                            \"lessThan\": \"3195e0daf590683992edb4eed32269e569e04924\",\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                        \"drivers/md/dm-crypt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/9a0dab8a9d9975dec14a118b55cae2517aea5ca9","https://git.kernel.org/stable/c/962ce265fbf5d87afeb78cf19c12e083ab0ffeb8","https://git.kernel.org/stable/c/a1a875614dae43b43d311bb9e7a7a70eed78efe6","https://git.kernel.org/stable/c/40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f","https://git.kernel.org/stable/c/3195e0daf590683992edb4eed32269e569e04924"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99037","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99037","identifiers":["CVE-2026-99037"]},"retained":false,"historicalAffected":[]}],"coverage":[]}