cve-2026-31488

About this tag
CVE-2026-31488 is a Linux kernel vulnerability in AMD's display driver (amdgpu) that affects the Display Stream Compression (DSC) validation path. The bug occurs when the driver incorrectly clears the CRTC mode_changed flag during atomic commits that include unrelated display changes, such as attaching external MST/DP displays. This state-management error can prevent proper stream release and refcounting, leading to memory leaks and potential use-after-free conditions. While the flaw is specific to AMD graphics hardware running Linux, it highlights how small state-machine mistakes in kernel drivers can create serious memory-safety issues. Discussions on WindowsForum cover the technical details of the bug, its impact on system stability and security, and the kernel patches that address it.

  1. CVE-2026-31488: AMD Linux DRM DSC mode_changed Bug Causes Leak to UAF

    CVE-2026-31488 is a narrowly scoped but operationally serious Linux kernel bug in AMD’s display stack, and it shows how a small state-management mistake can ripple into memory leaks and use-after-free conditions. The flaw centers on drm/amd/display and the way DSC validation handled mode_changed...
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    • amd display drm cve-2026-31488 dsc validation mst dp linux kernel security
    • Replies: 0
    • Forum: Security Alerts

  2. CVE-2026-31488: amdgpu DSC validation bug can trigger stream leak and use-after-free

    CVE-2026-31488 is a reminder that in the Linux graphics stack, seemingly small state-machine mistakes can cascade into serious memory-safety failures. The flaw sits in amdgpu’s Display Core path, where DSC validation incorrectly clears the CRTC mode_changed flag even when other, unrelated mode...
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    • amd gpu cve-2026-31488 kms atomic commits linux kernel security
    • Replies: 0
    • Forum: Security Alerts