CVE-2026-99222ModerateLocalRevised 7 Nov

keys: Protect the read method check against type removal

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 4.7
Impact: Not stated
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
EPSS · 30-day forecast: No EPSS score collected
Customer action: Required: follow the MSRC remediation guidance

More details

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Public detection template: No Nuclei template is listed in the current collected catalog
Component: Mariner
Weakness: —
Issued by: Linux
Published: 4 Nov 2026 · November 2026
Last revised: 7 Nov 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: HighAC:H
Privileges required: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: NoneC:N
Integrity: NoneI:N
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

1 affected product

azl3 kernel 6.6.159.1-1 on Azure Linux 3.0

What changed

Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (10)

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7 Nov 2026 · 08:59:22 UTC Last revised5 Nov 2026 14:52 UTC → 7 Nov 2026 01:51 UTC
6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
6 Nov 2026 · 08:04:49 UTC Last revised4 Nov 2026 01:01 UTC → 5 Nov 2026 14:52 UTC

Explore global source statements, affected packages and advisory history for CVE-2026-99222. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-99222

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": [
                        "security/keys/keyctl.c"
                    ],
                    "versions": [
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "e5f830ae6611cddbfc504c43f14155f60b63206a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "ff11cfed85cbfdd7fe1185ebd18d2c7a8353ad8d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "1486caee47b4909f52835a957c3293e970113e44",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "ff44f1b303aa76a818d898e85c56ed4852c031e2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "6a36e2a1a017c51f8a8ad2a094566bad97c46a9b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "3edc064069d07e7d37359fcb4d03d3bab15ee3ab",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "cf1af7df80e38bf58bd74c2cccce32fcbd1a596a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "e2a2deda08d91644f5e30c17d267b1cdc5f124b2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d3ec10aa95819bff18a0d936b18884c7816d0914",
                            "lessThan": "925c84e3cc21caf09de92d9bcafab0147790debf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7fa67aa30509ad0da72ac0f757aa76e53c0ea3de",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "18779eac17b5df9dff57138d07631573553a41d4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1afcf9488fc45765e20e2047d3b776981900e0b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "212d3adb1af4e34acb158d6c6def370016a1011d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.14.177",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.118",
                            "lessThan": "4.20",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.35",
                            "lessThan": "5.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.6.7",
                            "lessThan": "5.7",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

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": [
                        "security/keys/keyctl.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "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": "6.6.161",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.115",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.60",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.14",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3.1",
                            "lessThanOrEqual": "7.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.4-rc1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON