Description
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.
Published: 2026-06-26
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The Linux kernel accidentally records the effective capability set into the inheritable field of CAPSET audit records due to a copy‑paste defect. Every audit entry therefore shows the wrong value for the inheritable capabilities, effectively masking any user‑initiated changes to that field. An attacker who alters inheritable capabilities in preparation for a privilege‑escalating execution would find those changes invisible in the audit trail, which undermines compliance reporting and forensic investigations.

Affected Systems

All systems running the Linux kernel are affected, regardless of distribution, because the vulnerability is present in the core kernel code and no specific version range is supplied. Any Linux installation that has not applied the recent patch that fixes the audit logging error is potentially impacted.

Risk and Exploitability

The flaw does not provide direct remote code execution or service disruption, but it enables a local or privileged attacker to conceal privilege escalation attempts, thereby compromising audit integrity. Exploitation requires the ability to manipulate capabilities, typically achievable with root or elevated privileges, so the attack vector is local. The CVSS score is not stated and EPSS data is unavailable, but the bug has existed since 2008, indicating a long‑standing issue that may be leveraged in targeted or compliance‑bypass scenarios. The vulnerability is not listed in the CISA KEV catalog, suggesting that widespread exploitation is not known, yet the potential impact on forensic soundness warrants prompt action.

Generated by OpenCVE AI on June 26, 2026 at 22:20 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the Linux kernel to a version that includes the audit record fix for CAPSET records.
  • Reboot the system to ensure the updated kernel is active and that auditd captures the corrected capability fields.
  • Continuously monitor audit logs for unexpected CAPSET entries and investigate any anomalies to maintain compliance integrity.

Generated by OpenCVE AI on June 26, 2026 at 22:20 UTC.

Tracking

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Advisories

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History

Fri, 26 Jun 2026 22:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-200

Fri, 26 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
Description 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.
Title audit: fix incorrect inheritable capability in CAPSET records
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-26T19:40:47.946Z

Reserved: 2026-06-09T07:44:35.396Z

Link: CVE-2026-53287

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T22:30:04Z

Weaknesses
  • CWE-20

    Improper Input Validation

  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor