CVE-2025-71083

Local service interruption via evicted TTM object dereference

Published Jan 13, 2026 · Updated Jan 13, 2026

NULL pointer dereference in the TTM buffer-object access path in Linux Kernel allows local users to crash the system through devcoredump. The ttm_bo_access function reads bo->resource->mem_type without first checking whether an evicted buffer object still has a resource. Local low-privileged access and a devcoredump read of an evicted buffer object are required; no confidentiality or integrity impact is reported.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the TTM buffer-object access path in Linux Kernel allows local users to crash the system through devcoredump. The ttm_bo_access function reads bo->resource->mem_type without first checking whether an evicted buffer object still has a resource. Local low-privileged access and a devcoredump read of an evicted buffer object are required; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2025-71083
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=09ac4fcb3f255e9225967c75f5893325c116cdbe <3d004f7341d4898889801ebb2ef61ffca610dd6f
  2. Affected versionversion=09ac4fcb3f255e9225967c75f5893325c116cdbe <491adc6a0f9903c32b05f284df1148de39e8e644
  3. Affected versionversion=09ac4fcb3f255e9225967c75f5893325c116cdbe <4b9944493c6d92d7b29cfd83aaf3deb842b8da79
  4. Affected versionversion=09ac4fcb3f255e9225967c75f5893325c116cdbe <5a81095d3e1b521ac7cfe3b14d5f149bace3d6e0
  5. Affected versionversion=09ac4fcb3f255e9225967c75f5893325c116cdbe <b94182b3d7228aec18d069cba56d5982e9bfe1b1
  6. Affected versionversion=4.14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=09ac4fcb3f255e9225967c75f5893325c116cdbe <3d004f7341d4898889801ebb2ef61ffca610dd6f; version=09ac4fcb3f255e9225967c75f5893325c116cdbe <491adc6a0f9903c32b05f284df1148de39e8e644; version=09ac4fcb3f255e9225967c75f5893325c116cdbe <4b9944493c6d92d7b29cfd83aaf3deb842b8da79; version=09ac4fcb3f255e9225967c75f5893325c116cdbe <5a81095d3e1b521ac7cfe3b14d5f149bace3d6e0; version=09ac4fcb3f255e9225967c75f5893325c116cdbe <b94182b3d7228aec18d069cba56d5982e9bfe1b1; version=4.14

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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