In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings

VCN encoder and decoder rings do not support 64-bit user fence writes,
reject CS submissions with user fences.

(cherry picked from commit efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
28c17d72072b7ce5cc13a527dcbfc045cc995e7d affected < 2c6fb056567efb49f8674108b86088a1cfaa86d0
28c17d72072b7ce5cc13a527dcbfc045cc995e7d affected < 8f0ea4524dc71c6c9ec97f2711f46e12f624140f
28c17d72072b7ce5cc13a527dcbfc045cc995e7d affected < 602d4c5872b25ddd4d82fb2025efb9a05b187bb3
28c17d72072b7ce5cc13a527dcbfc045cc995e7d affected < 5a3c6f76cab164a5d803084908d7050f649ab7f9
28c17d72072b7ce5cc13a527dcbfc045cc995e7d affected < 4f317863a3ab212a027d8c8c3cc3af4e3fb95704
Linux Linux affected
Version Status Constraints
5.4 affected —
0 unaffected < 5.4
6.6.141 unaffected ≤ 6.6.*
6.12.91 unaffected ≤ 6.12.*
6.18.33 unaffected ≤ 6.18.*
7.0.10 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

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Fixes

Solution

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0 cve-icon
https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704 cve-icon
https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9 cve-icon
https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3 cve-icon
https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f cve-icon
History

Sun, 19 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)
Title drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-19T14:04:45.096Z

Reserved: 2026-07-19T07:54:57.016Z

Link: CVE-2026-63855

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.