CVE-2026-74454

Local memory corruption via oversized BPOS authorization

Published Aug 15, 2026 · Updated Aug 15, 2026

Memory corruption in the Linux kernel VC4 DRM driver allows local users to corrupt CMA memory through crafted GPU jobs. The vc4_overflow_mem_work() handler points BPOA at a 512 KB slot but programs BPOS with the entire 16 MB buffer size, letting the GPU PTB write tile lists across adjacent slots and beyond the buffer. Exploitation requires local access to the VC4 render node and a job that exhausts the initial binner slot; resulting corruption can wedge the GPU or crash the system.

CVSS severity7.8
High
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

Memory corruption in the Linux kernel VC4 DRM driver allows local users to corrupt CMA memory through crafted GPU jobs. The vc4_overflow_mem_work() handler points BPOA at a 512 KB slot but programs BPOS with the entire 16 MB buffer size, letting the GPU PTB write tile lists across adjacent slots and beyond the buffer. Exploitation requires local access to the VC4 render node and a job that exhausts the initial binner slot; resulting corruption can wedge the GPU or crash the system.

The record

CVE
CVE-2026-74454
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.13
  2. Affected versionversion=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <0badb30871004d34df87be33e853536f0b69885f
  3. Affected versionversion=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <1e33ca7f44be64beed2735bb76b86eb65ba8c05b
  4. Affected versionversion=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <2f2291a119e9a8b696ae8bb36e86b75d272ceaea
  5. Affected versionversion=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <6395789e4739aa5177bbec0fa0f07ccc38d249b0
  6. Affected versionversion=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <6cd5acf6f87c073622bd61e38fe99c47365cda9c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <0badb30871004d34df87be33e853536f0b69885f; version=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <1e33ca7f44be64beed2735bb76b86eb65ba8c05b; version=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <2f2291a119e9a8b696ae8bb36e86b75d272ceaea; version=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <6395789e4739aa5177bbec0fa0f07ccc38d249b0; version=553c942f8b2cbc7394b4d4fa2f848b23a8f07451 <6cd5acf6f87c073622bd61e38fe99c47365cda9c

Published CVSS scores

7.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

T1068Exploitation for Privilege Escalation

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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