CVE-2026-68463 mmc: sdhci-esdhc-imx: use pm_runtime_resume_and_get() in suspend
A flaw in the Linux kernel's SDHCI driver for i.MX platforms causes a kernel panic during suspend if power management fails, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-68463?
CVE-2026-68463 is a vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
mmc: sdhci-esdhc-imx: use pm_runtime_resume_and_get() in suspend
Replace pm_runtime_get_sync() with pm_runtime_resume_and_get() to simplify error handling. pm_runtime_resume_and_get() automatically drops the usage counter on failure, avoiding the need for a separate pm_runtime_put_noidle() call. If it fails, the device is unclocked and accessing hardware registers would cause a kernel panic, so return the error immediately.
Which versions are affected by CVE-2026-68463?
How do I fix CVE-2026-68463?
Apply the vendor's patch.
Is CVE-2026-68463 being exploited?
There is no known exploitation of CVE-2026-68463 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68463, DEBIAN-CVE-2026-68463, GHSA-v5mv-gf7w-fvpr, UBUNTU-CVE-2026-68463.