PM / devfreq: Check governor before using governor->name
In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: Check governor before using governor->name Commit 96ffcdf239de ("PM / devfreq: Remove redundant governor_name from struct devfreq") removes governor_name and uses governor->name to replace it. But devfreq->governor may be NULL and directly using devfreq->governor->name may cause null pointer exception. Move the check of governor to before using governor->name.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: Check governor before using governor->name Commit 96ffcdf239de ("PM / devfreq: Remove redundant governor_name from struct devfreq") removes governor_name and uses governor->name to replace it. But devfreq->governor may be NULL and directly using devfreq->governor->name may cause null pointer exception. Move the check of governor to before using governor->name.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2731c68f536fddcb71332db7f8d78c5eb4684c04
- https://git.kernel.org/stable/c/631e101728df2a86b8fb761b49fad9712c651f8a
- https://git.kernel.org/stable/c/75323a49aa603cf5484a6d74d0d329e86d756e11
- https://git.kernel.org/stable/c/81f50619370045120c133bfdda5b320c8c97d41e
- https://git.kernel.org/stable/c/bab7834c03820eb11269bc48f07c3800192460d2
- https://git.kernel.org/stable/c/d5632359dbc44862fc1ed04093c1f57529830261
- https://git.kernel.org/stable/c/f0479e878d4beb45e73c03e574c59f0a23ccd176
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38609.json
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-38609