CVE-2026-98992ModerateLocalRevised 26 Oct

namespace: don't copy an unmounted mount tree

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: NoneC:N
Integrity: LowI:L
Availability: LowA:L

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-2026-98992. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-98992

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": [
                        "fs/namespace.c"
                    ],
                    "versions": [
                        {
                            "version": "e149ed2b805fefdccf7ccdfc19eca22fdd4514ac",
                            "lessThan": "86a2d56b1960720bf1844441c0890621e9db2f25",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e149ed2b805fefdccf7ccdfc19eca22fdd4514ac",
                            "lessThan": "7e037b1fd339d865737c8accd29abcf40130a5a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e149ed2b805fefdccf7ccdfc19eca22fdd4514ac",
                            "lessThan": "b47b40c4f058418f9707454543179df240796aad",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e149ed2b805fefdccf7ccdfc19eca22fdd4514ac",
                            "lessThan": "8d3527457e183cedee3003c2897314da49488311",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e149ed2b805fefdccf7ccdfc19eca22fdd4514ac",
                            "lessThan": "8bacbf6be959973b28b691713a872c12eae69eec",
                            "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": [
                        "fs/namespace.c"
                    ],
                    "versions": [
                        {
                            "version": "3.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.19",
                            "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"
                        }
                    ]
                }