CVE-2026-80576

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-80576

Key Details

CVE	CVE-2026-80576
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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

drm/amdgpu: reject oversized IBs with per-ring packet limits

On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through

to ib->length_dw without a limit, while ring_emit_ib() encodes length

into packet fields. Oversized values can corrupt adjacent control bits

and destabilize command submission.

Add a per-ring IB packet size limit helper and reject command

submissions exceeding the corresponding dword limit before IB

allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE,

and apply the MM fallback limit for other ring types.

(cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52) (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-80576
CVE	https://www.cve.org/CVERecord?id=CVE-2026-80576

Source

Reference

NVD

CVE