VulnerabilityPublished 26 Jun 2026Updated 6 Nov 2026

CVE-2026-53287: Linux kernel · audit: fix incorrect inheritable capability in CAPSET records

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in febb4bf373ac565d3fb8d1f429827bdd983be496 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in febb4bf373ac565d3fb8d1f429827bdd983be496, e35f3550c5b4fab33103c18654c293cee9850b0a, e4a640475e43f406fdfd56d370b1f34b0cbbc18d +5

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < febb4bf373ac565d3fb8d1f429827bdd983be496	Fixed in febb4bf373ac565d3fb8d1f429827bdd983be496
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < e35f3550c5b4fab33103c18654c293cee9850b0a	Fixed in e35f3550c5b4fab33103c18654c293cee9850b0a
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < e4a640475e43f406fdfd56d370b1f34b0cbbc18d	Fixed in e4a640475e43f406fdfd56d370b1f34b0cbbc18d
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < d782e4d200cd9036ef353eeb29525bfbfd13a14e	Fixed in d782e4d200cd9036ef353eeb29525bfbfd13a14e
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < 151ee470edc3d7ed29fe72df678f8357d2ad8ced	Fixed in 151ee470edc3d7ed29fe72df678f8357d2ad8ced
LinuxLinux	Affected ≥ e68b75a027bb94066576139ee33676264f867b87, < 95de7bb4bf535a9288549d401ebde83cdcbf2792	Fixed in 95de7bb4bf535a9288549d401ebde83cdcbf2792

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.

References

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