CVE-2025-38353

Kernel crash via uninitialized submission mutex

Published Jul 25, 2025 · Updated May 11, 2026

Improper locking in Linux kernel 6.8 through 6.12.35 and 6.13 through 6.15.4 allows local users to crash the kernel. xe_guc_submit_wedge takes a mutex from uninitialized submission state when the device wedges during GuC firmware upload. Local low-privileged access and an Intel Xe GPU using GuC submission are required; the bounded consequence is an availability-only kernel warning or crash.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in Linux kernel 6.8 through 6.12.35 and 6.13 through 6.15.4 allows local users to crash the kernel. xe_guc_submit_wedge takes a mutex from uninitialized submission state when the device wedges during GuC firmware upload. Local low-privileged access and an Intel Xe GPU using GuC submission are required; the bounded consequence is an availability-only kernel warning or crash.

The record

CVE
CVE-2025-38353
Published
Jul 25, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.8
  2. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <1e1981b16bb1bbe2fafa57ed439b45cb5b34e32d
  3. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <20eec7018e132a023f84ccbdf56b6c5b73d3094f
  4. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <a6d81b2d7037ef36163ad16459ed3fd17cb1b596

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <1e1981b16bb1bbe2fafa57ed439b45cb5b34e32d; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <20eec7018e132a023f84ccbdf56b6c5b73d3094f; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <a6d81b2d7037ef36163ad16459ed3fd17cb1b596

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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