CVE-2026-99214: Linux kernel · drm/vc4: hdmi: Move packet RAM enable to PM runtime
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 29 Oct 2026, 22:37 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10linuxpkg:deb/ubuntu/linux?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=stonkingOther 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 by moving Packet RAM enablement to runtime power management hooks in the Linux kernel. Users should update to patched kernel versions to resolve this issue. No additional mitigation actions are required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's drm/vc4 HDMI driver was fixed by moving the Packet RAM enablement to the runtime power management hooks. The issue involved the audio infoframe being written before video was restored, causing a kernel warning and potential system instability due to Packet RAM being disabled prematurely. This fix ensures Packet RAM remains enabled appropriately during runtime power management transitions.
References
- ubuntu.com/security/CVE-2026-99214 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-99214 (opens in a new tab)
- git.kernel.org/stable/c/6a987992c78e2e04f71e685d1c589f8ea2151fa2 (opens in a new tab)
- git.kernel.org/stable/c/6b03e354526f6bad60ed3a7f08fec8b7d29d2f27 (opens in a new tab)
- git.kernel.org/stable/c/3f57b34485dc01e5a2db60a89a6ae5439a897e53 (opens in a new tab)