CVE-2026-99037

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99037", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.387Z", "datePublished": "2026-10-23T12:21:54.317Z", "dateUpdated": "2026-10-30T12:41:10.478Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:41:10.478Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/dm-crypt.c"], "versions": [{"version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "lessThan": "a04546fa65cbcf4a2774f93f365d747a19abb9b8", "status": "affected", "versionType": "git"}, {"version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "lessThan": "412d1c1f490ed9ec5bd029883e8a626626613a70", "status": "affected", "versionType": "git"}, {"version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "lessThan": "a50e830ded5a0d0cb9e897d1521716ba654f8c3e", "status": "affected", "versionType": "git"}, {"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"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/dm-crypt.c"], "versions": [{"version": "4.12", "status": "affected"}, {"version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "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"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a04546fa65cbcf4a2774f93f365d747a19abb9b8"}, {"url": "https://git.kernel.org/stable/c/412d1c1f490ed9ec5bd029883e8a626626613a70"}, {"url": "https://git.kernel.org/stable/c/a50e830ded5a0d0cb9e897d1521716ba654f8c3e"}, {"url": "https://git.kernel.org/stable/c/9a0dab8a9d9975dec14a118b55cae2517aea5ca9"}, {"url": "https://git.kernel.org/stable/c/962ce265fbf5d87afeb78cf19c12e083ab0ffeb8"}, {"url": "https://git.kernel.org/stable/c/a1a875614dae43b43d311bb9e7a7a70eed78efe6"}, {"url": "https://git.kernel.org/stable/c/40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f"}, {"url": "https://git.kernel.org/stable/c/3195e0daf590683992edb4eed32269e569e04924"}], "title": "dm-crypt: reject the lmk IV mode with AEAD ciphers", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/md/dm-crypt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a04546fa65cbcf4a2774f93f365d747a19abb9b8", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "412d1c1f490ed9ec5bd029883e8a626626613a70", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "a50e830ded5a0d0cb9e897d1521716ba654f8c3e", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "9a0dab8a9d9975dec14a118b55cae2517aea5ca9", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "962ce265fbf5d87afeb78cf19c12e083ab0ffeb8", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "a1a875614dae43b43d311bb9e7a7a70eed78efe6", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}, {"lessThan": "3195e0daf590683992edb4eed32269e569e04924", "status": "affected", "version": "33d2f09fcb357fd1861c4959d1d3505492bf91f8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/md/dm-crypt.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"lessThan": "4.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-99037", "lastModified": "2026-10-30T13:21:40.797", "metrics": {}, "published": "2026-10-23T13:17:26.947", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3195e0daf590683992edb4eed32269e569e04924"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40ea7dfa8cd5f9aed72a55c9ca3008aee5880e6f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/412d1c1f490ed9ec5bd029883e8a626626613a70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/962ce265fbf5d87afeb78cf19c12e083ab0ffeb8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9a0dab8a9d9975dec14a118b55cae2517aea5ca9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a04546fa65cbcf4a2774f93f365d747a19abb9b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a1a875614dae43b43d311bb9e7a7a70eed78efe6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a50e830ded5a0d0cb9e897d1521716ba654f8c3e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: dm-crypt: reject the lmk IV mode with AEAD ciphers", "id": "2559828", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559828"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndm-crypt: reject the lmk IV mode with AEAD ciphers\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.\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.\nNote that this is not a security bug because the memory corruption can\nonly be triggered by root.", "A flaw was found in the Linux kernel's dm-crypt subsystem. A privileged local user can cause a Denial of Service (DoS) by configuring an incompatible encryption cipher and initialization vector mode. This improper handling triggers an out-of-bounds memory read, resulting in a kernel crash."], "name": "CVE-2026-99037", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99037\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99037\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99037.mbox"], "threat_severity": "Moderate"}

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