CVE-2026-63849Patch

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 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 e16be95a2c3ee712b142cb27d2dca0b461181359)

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0.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-20

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Full discourse1 post

DFIR Lab@DFIR_Lab91d
Patch
🚨 HIGH: CVE-2026-63849 (CVSS 7.8) affects Linux kernel AMD GPU VCN driver. Local privilege escalation risk via user fence handling flaw. Patch available. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/VLGtEXJCWq
Post summary
A CVE-2026-63849 flaw in the Linux kernel AMD GPU VCN driver enables local privilege escalation; a patch has already been released.
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