CVE-2026-63852 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529 https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522 https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a https://git.kernel.org/stable/c/c12a5d35033c0640c57c10d7111c010c7b9c2c8e

Frequently Asked Questions

What is CVE-2026-63852? +

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa) It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-63852? +

CVE-2026-63852 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-63852? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-63852