VulnerabilityPublished 10 Jul 2025Updated 5 Nov 2026

CVE-2025-38344: Linux kernel · ACPICA: fix acpi parse and parseext cache leaks

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in bed18f0bdcd6737a938264a59d67923688696fc4 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:33 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · 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, 2026-11-05.

Patch

Available – fixed in bed18f0bdcd6737a938264a59d67923688696fc4, 960236150cd3f08e13b397dd5ae4ccf7a2986c00, 198c2dab022e5e94a99fff267b669d693bc7bb49 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
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 5 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 ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < bed18f0bdcd6737a938264a59d67923688696fc4	Fixed in bed18f0bdcd6737a938264a59d67923688696fc4
LinuxLinux	Affected ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < 960236150cd3f08e13b397dd5ae4ccf7a2986c00	Fixed in 960236150cd3f08e13b397dd5ae4ccf7a2986c00
LinuxLinux	Affected ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < 198c2dab022e5e94a99fff267b669d693bc7bb49	Fixed in 198c2dab022e5e94a99fff267b669d693bc7bb49
LinuxLinux	Affected ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < 41afebc9a0762aafc35d2df88f4e1b798155a940	Fixed in 41afebc9a0762aafc35d2df88f4e1b798155a940
LinuxLinux	Affected ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < 3e0c59180ec83bdec43b3d3482cff23d86d380d0	Fixed in 3e0c59180ec83bdec43b3d3482cff23d86d380d0
LinuxLinux	Affected ≥ 88ac00f5a841dcfc5c682000f4a6add0add8caac, < 1fee4324b5660de080cefc3fc91c371543bdb8f6	Fixed in 1fee4324b5660de080cefc3fc91c371543bdb8f6

AI-suggested

A fix for this vulnerability is available and has been applied in the Linux kernel commits identified by the provided hashes. Users and administrators should update their Linux kernel to a version that includes these fixes to remediate the issue.

Description

CVE-2025-38344 addresses a memory leak vulnerability in the Linux kernel's ACPICA component related to ACPI parse and parseext cache leaks. The issue occurs during ACPI early abort cases, where certain slab caches are not properly released, leading to memory leaks. This flaw was identified and fixed in specific Linux kernel commits.

Impact

The vulnerability causes memory leaks in the kernel's ACPICA subsystem, which could lead to increased memory consumption and potential system instability or resource exhaustion over time. There is no indication of direct code execution or privilege escalation from this leak. No known exploits in the wild have been reported.

Summary

This vulnerability involves memory leaks in the ACPICA subsystem of the Linux kernel, specifically in the ACPI parse and parseext caches. The leak occurs because the 'Acpi-Parse' and 'Acpi-parse_ext' caches, created with the SLAB_NEVER_MERGE flag, are not properly destroyed during ACPI early abort scenarios. Detailed kernel boot logs demonstrate that slab caches still contain objects when they should have been freed, causing resource leakage. The issue was discovered through research by Seunghun Han of the National Security Research Institute of South Korea and has been resolved in multiple Linux kernel commits.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Nov 2026, 21:33 UTC

Technical details

References

Community reviews

Related threats