CVE-2025-71315: Linux kernel · drm/vkms: Convert to DRM's vblank timer
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Jun 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 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde@7.0.0-1008.8?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been implemented that replaces the vkms custom vblank timer with the DRM subsystem's vblank timer implementation. Users should update to a patched kernel version that includes this change. Since this is a kernel-level fix, applying the official kernel updates from the vendor or distribution is the recommended remediation. No additional mitigation steps are indicated beyond applying the official patch.
Description
A vulnerability in the Linux kernel's drm/vkms component related to the vblank timer implementation has been resolved by replacing vkms' custom vblank timer with the DRM's standard vblank timer implementation. The fix removes the custom hrtimer and integrates the DRM vblank helpers and initializer macros. This change addresses potential issues in the vkms output timer handling.
References
- ubuntu.com/security/CVE-2025-71315 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71315 (opens in a new tab)
- git.kernel.org/linus/02e2681ffe1addde1fc8c35d05657b16bfa79613 (opens in a new tab)
- git.kernel.org/stable/c/02e2681ffe1addde1fc8c35d05657b16bfa79613 (opens in a new tab)
- git.kernel.org/stable/c/a0582cc923985c6b72fe871b5f7aa7c682bfc230 (opens in a new tab)