CVE-2026-89814

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-89814
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89814.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-89814
Downstream
Related
Published
2026-09-16T10:30:47Z
Modified
2026-10-08T02:52:21Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
drm/amdgpu: clamp the isolation index for rings outside a partition
Details

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

drm/amdgpu: clamp the isolation index for rings outside a partition

adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN.

Fall back to the first slot the way the cleaner shader path already does, and stop taking the address before the ring type check that makes it relevant.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89814.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
bd22e44ad415ac22e3a4f9a983d2a085f6cb4427
Fixed
964de255497ffd7cb8a86e405b8ac6d927e7e177
Fixed
0bfb938182d1313e5cac32ae38dbaaa4eabe4af4
Fixed
b30900566642ceb2c9e12b56c2afec28d0fd91a0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
6.14.9
Fixed
6.15
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4277dc1942a8979abe1ef2b55069f42497f885c0

Affected versions

v6.*
v6.14.10
v6.14.11
v6.14.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89814.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.15.0
Fixed
6.18.51
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.2.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89814.json"