CVE-2026-46211

Local system crash via unchecked allocation failure

Published May 28, 2026 · Updated May 28, 2026

NULL pointer dereference in affected Linux Kernel releases allows local users to crash the system through a DRM MSM metadata ioctl. msm_ioctl_gem_info_get_metadata() passes an unchecked NULL result from kmemdup() to copy_to_user() and incorrectly reports buffer and copy failures as success. Exploitation requires local access to an MSM DRM render node and allocation failure; the demonstrated consequence is a kernel crash rather than data disclosure or modification.

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 affected Linux Kernel releases allows local users to crash the system through a DRM MSM metadata ioctl. msm_ioctl_gem_info_get_metadata() passes an unchecked NULL result from kmemdup() to copy_to_user() and incorrectly reports buffer and copy failures as success. Exploitation requires local access to an MSM DRM render node and allocation failure; the demonstrated consequence is a kernel crash rather than data disclosure or modification.

The record

CVE
CVE-2026-46211
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <47cbfe2608314b833ad61a65827d8fb363bc2d2d
  3. Affected versionversion=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <697e1a9559f6962f999cc4c748c2ffffcc0a7a7a
  4. Affected versionversion=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <b079e85c91f446f29e808d8291189e897f1884ff
  5. Affected versionversion=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <c57c861956b89f2e2528e6384d51e2dedd915809

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <47cbfe2608314b833ad61a65827d8fb363bc2d2d; version=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <697e1a9559f6962f999cc4c748c2ffffcc0a7a7a; version=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <b079e85c91f446f29e808d8291189e897f1884ff; version=9902cb999e4e913d98e8afe4b36c08e4a793e1ce <c57c861956b89f2e2528e6384d51e2dedd915809

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
T1499Endpoint Denial of Service

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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