CVE-2026-80703: Linux kernel · drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 4.8 Medium.
Data as of 28 Oct 2026, 01:00 UTC
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE Prevent unauthorized termination of active GPU debug sessions. Previously, users with /dev/kfd access could terminate another process's debug session without proper ownership or ptrace authorization. (cherry picked from commit 4db4c5ffd5585b72622ecf6ffedf2da258ee23f5)
References
- ubuntu.com/security/CVE-2026-80703 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80703 (opens in a new tab)
- git.kernel.org/linus/99b2fe4f19e3be0a8d0a0b5ea98d855970889653 (opens in a new tab)
- git.kernel.org/stable/c/4070909ac042f44654aac72f7986ea550c96f591 (opens in a new tab)
- git.kernel.org/stable/c/99b2fe4f19e3be0a8d0a0b5ea98d855970889653 (opens in a new tab)
- git.kernel.org/stable/c/9e52212aff8ed1fd9087728f61243ce3efd9d0ac (opens in a new tab)
- git.kernel.org/stable/c/b8c05061997408bf81759f2dd31cd5f66771d15f (opens in a new tab)
- git.kernel.org/stable/c/ce813614f63b020a826071276a92f2cfae7cba79 (opens in a new tab)