CVE-2025-68326

Kernel crash via uninitialized stack depot

Published Dec 22, 2025 · Updated Dec 22, 2025

A NULL pointer dereference in the Linux 6.17 Xe GuC debug path causes a kernel crash during FAST_REQ tracking activity. fast_req_track reaches stack_depot_save_flags after xe_guc_ct_init_noalloc omits the required stack_depot_init call. The faulty path exists only with CONFIG_DRM_XE_DEBUG_GUC enabled; public records do not identify an attacker-controlled trigger.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in the Linux 6.17 Xe GuC debug path causes a kernel crash during FAST_REQ tracking activity. fast_req_track reaches stack_depot_save_flags after xe_guc_ct_init_noalloc omits the required stack_depot_init call. The faulty path exists only with CONFIG_DRM_XE_DEBUG_GUC enabled; public records do not identify an attacker-controlled trigger.

The record

CVE
CVE-2025-68326
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 2025Record 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=16b7e65d299d56442879405ac85800877fa51355 <0e234632e39bd21dd28ffc9ba3ae8eec4deb949c
  2. Affected versionversion=16b7e65d299d56442879405ac85800877fa51355 <1966838d1c82149cbf4a652322d26a6e5aae9c4e
  3. Affected versionversion=6.17

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=16b7e65d299d56442879405ac85800877fa51355 <0e234632e39bd21dd28ffc9ba3ae8eec4deb949c; version=16b7e65d299d56442879405ac85800877fa51355 <1966838d1c82149cbf4a652322d26a6e5aae9c4e; version=6.17

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

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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