VulnerabilityPublished 13 Jan 2026Updated 19 Oct 2026

CVE-2025-71083: Linux kernel · drm/ttm: Avoid NULL pointer deref for evicted BOs

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in b94182b3d7228aec18d069cba56d5982e9bfe1b1 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

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

EPSS

0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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, 2026-06-10.

Patch

Available – fixed in b94182b3d7228aec18d069cba56d5982e9bfe1b1, 491adc6a0f9903c32b05f284df1148de39e8e644, 47a85604a761005d255ae38115ee630cc6931756 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < b94182b3d7228aec18d069cba56d5982e9bfe1b1	Fixed in b94182b3d7228aec18d069cba56d5982e9bfe1b1
LinuxLinux	Affected ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < 491adc6a0f9903c32b05f284df1148de39e8e644	Fixed in 491adc6a0f9903c32b05f284df1148de39e8e644
LinuxLinux	Affected ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < 47a85604a761005d255ae38115ee630cc6931756	Fixed in 47a85604a761005d255ae38115ee630cc6931756
LinuxLinux	Affected ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < 5a81095d3e1b521ac7cfe3b14d5f149bace3d6e0	Fixed in 5a81095d3e1b521ac7cfe3b14d5f149bace3d6e0
LinuxLinux	Affected ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < 4b9944493c6d92d7b29cfd83aaf3deb842b8da79	Fixed in 4b9944493c6d92d7b29cfd83aaf3deb842b8da79
LinuxLinux	Affected ≥ 09ac4fcb3f255e9225967c75f5893325c116cdbe, < 3d004f7341d4898889801ebb2ef61ffca610dd6f	Fixed in 3d004f7341d4898889801ebb2ef61ffca610dd6f

Description

In the Linux kernel, the following vulnerability has been resolved: drm/ttm: Avoid NULL pointer deref for evicted BOs It is possible for a BO to exist that is not currently associated with a resource, e.g. because it has been evicted. When devcoredump tries to read the contents of all BOs for dumping, we need to expect this as well -- in this case, ENODATA is recorded instead of the buffer contents.

CWE-476NULL Pointer Dereference (opens in a new tab)
Base weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #13OWASP Top 10 A10:2025: Mishandling of Exceptional Conditions (opens in a new tab)
The product dereferences a pointer that it expects to be valid but is NULL.
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished.
Requirements
Select a programming language that is not susceptible to these issues.
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
OWASP Cheat Sheets
Logging (opens in a new tab)
Error Handling (opens in a new tab)
OWASP ASVS 4.0.3
V11.1.7 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

WeaknessesCWE-476

Technical details

References

Community reviews

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