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Linux KernelOperating system · Linux

CVE-2026-53287

MEDIUM · 5.5 CVSS v3.1 Published 2026-06-26
Fix available
A fix is available. Upgrade to 5.10.258 / 5.15.209 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: audit: fix incorrect inheritable capability in CAPSET records __audit_log_capset() records the effective capability set into the inheritable field due to a copy-paste error. Every CAPSET audit record therefore reports cap_pi (process inheritable) with the value of cap_effective instead of cap_inheritable. This silently corrupts audit data used for compliance and forensic analysis: an attacker who modifies inheritable capabilities to prepare for a privilege-escalating exec would have the change masked in the audit trail. The bug has been present since the original introduction of CAPSET audit records in 2008.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 2.6.29, < 5.10.258>= 5.11, < 5.15.209>= 5.16, < 6.1.175>= 6.2, < 6.6.141>= 6.7, < 6.12.91>= 6.13, < 6.18.33>= 6.19, < 7.0.10= 7.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.10.258 / 5.15.209 / 6.1.175 or later
Fixed in 5.10.2585.15.2096.1.175
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to the first patched version in your kernel branch: 5.10.258, 5.15.209, 6.1.175, or 6.6.141 depending on current branch

  1. Identify the currently running kernel version using `uname -r`
  2. Determine which version branch your kernel belongs to (5.10.x, 5.11-5.15.x, 5.16-6.1.x, or 6.2-6.6.x)
  3. Upgrade the Linux kernel to the first patched version in your branch: For 5.10.x: upgrade to >= 5.10.258; For 5.11-5.15.x: upgrade to >= 5.15.209; For 5.16-6.1.x: upgrade to >= 6.1.175; For 6.2-6.6.x: upgrade to >= 6.6.141
  4. On Debian/Ubuntu: run `sudo apt update && sudo apt upgrade linux-image-generic`
  5. On RHEL/CentOS: run `sudo yum update kernel`
  6. On Fedora: run `sudo dnf update kernel`
  7. Reboot the system to load the new kernel: `sudo reboot`
  8. Verify the fix by checking the kernel version and confirming the audit_capset.c code is corrected
Caveat Kernel upgrades may require system restart and could have compatibility implications with custom kernel modules or specific hardware drivers; test in staging environment first

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-53287 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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