CVE-2026-99037ModerateLocalRevised 26 Oct

dm-crypt: reject the lmk IV mode with AEAD ciphers

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 6.0CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Impact: Not stated
EPSS, next 30 days: Not scored yet
Public exploit code: No Nuclei template lists it
Exploitability: Not assessed
Publicly disclosed: No
Customer action: Required: apply the update
Component: Mariner
Weakness: —
Issued by: Linux
Published: 25 Oct 2026 · October 2026
Last revised: 26 Oct 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: LowAC:L
Privileges required: HighPR:H
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: NoneC:N
Integrity: HighI:H
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

1 affected product

azl3 kernel 6.6.157.1-1 on Azure Linux 3.0

Page history

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Explore global source statements, affected packages and advisory history for CVE-2026-99037. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-99037

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "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": "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"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "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": "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"
                        }
                    ]
                }