CVE-2026-68229

Kernel memory disclosure via unchecked H.264 DPB index

Published Aug 10, 2026 · Updated Aug 10, 2026

An out-of-bounds read in the Linux Cedrus H.264 decoder from 5.10 allows local users to disclose kernel memory or crash the system. The _cedrus_write_ref_list() function uses unvalidated ref_pic_list0 and ref_pic_list1 indices to read beyond the fixed decode->dpb[] array. Access requires a local account able to open the Cedrus video device on Allwinner hardware; systems without the Cedrus VPU are unaffected.

CVSS severity7.1
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Linux Cedrus H.264 decoder from 5.10 allows local users to disclose kernel memory or crash the system. The _cedrus_write_ref_list() function uses unvalidated ref_pic_list0 and ref_pic_list1 indices to read beyond the fixed decode->dpb[] array. Access requires a local account able to open the Cedrus video device on Allwinner hardware; systems without the Cedrus VPU are unaffected.

The record

CVE
CVE-2026-68229
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, CAPEC-540
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=5.10
  2. Affected versionversion=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <0af8945fcae742d099f59f3c725eb67235953a31
  3. Affected versionversion=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <10358ea986c3c85516d1c8206486464f79d36e76
  4. Affected versionversion=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <2ee8327c85b3ac7b532d2d6a1e3a295d5ad7414a
  5. Affected versionversion=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <9924cb548ee7753a6473997949c3ec48092de0b0
  6. Affected versionversion=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <e53112c2de88982e66c369aee2120d5efd78df30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <0af8945fcae742d099f59f3c725eb67235953a31; version=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <10358ea986c3c85516d1c8206486464f79d36e76; version=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <2ee8327c85b3ac7b532d2d6a1e3a295d5ad7414a; version=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <9924cb548ee7753a6473997949c3ec48092de0b0; version=e000e1fa4bdbd783149e7f97cf3be61e1c0bab8c <e53112c2de88982e66c369aee2120d5efd78df30

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.1Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5Red HatCVSS: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

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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-125Out-of-bounds Read
CAPEC-540Overread Buffers

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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