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Vulnerabilities

Vulnerability · AZL-108555

CVE-2026-53613 affecting package util-linux 2.40.2-6

Published Oct 14, 2026 · catalog updated Oct 17, 2026 · affecting package util-linux 2.40.2-6

Open the advisory

Exploitation likelihood is not on this record for AZL-108555. A missing EPSS score is not a low risk. Compare affecting package util-linux 2.40.2-6 with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (affecting package util-linux 2.40.2-6).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Not established
Affected products
Azure Linux:3 util-linux

util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy path is used without , restricted non-root requests validate an target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab or entry whose target has an attacker-writable ancestor can use to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over , and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through ; the documented legacy fallback without remains affected.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Azure Linux:3 util-linux0 → 2.40.2-6

How to fix AZL-108555

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for AZL-108555. A missing EPSS score is not a low risk. Compare affecting package util-linux 2.40.2-6 with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 2.40.2-6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy path is used without , restricted non-root requests validate an target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab or entry whose target has an attacker-writable ancestor can use to swap a path co

  2. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    util-linux fixed in 2.40.2-6

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy path is used without , restricted non-root requests validate an target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab or entry whose target has an attacker-writable ancestor can use to swap a path co

Sources

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.