{"id":"CVE-2026-99037","published":"2026-10-23T13:17:26.947","lastModified":"2026-10-23T13:17:26.947","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3195e0daf590683992edb4eed32269e569e04924","tags":[]},{"url":"https://git.kernel.org/stable/c/40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f","tags":[]},{"url":"https://git.kernel.org/stable/c/962ce265fbf5d87afeb78cf19c12e083ab0ffeb8","tags":[]},{"url":"https://git.kernel.org/stable/c/9a0dab8a9d9975dec14a118b55cae2517aea5ca9","tags":[]},{"url":"https://git.kernel.org/stable/c/a1a875614dae43b43d311bb9e7a7a70eed78efe6","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}