CVE-2025-68732
gpu: host1x: Fix race in syncpt alloc/free
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix race in syncpt alloc/free Fix race condition between host1x_syncpt_alloc() and host1x_syncpt_put() by using kref_put_mutex() instead of kref_put() + manual mutex locking. This ensures no thread can acquire the syncpt_mutex after the refcount drops to zero but before syncpt_release acquires it. This prevents races where syncpoints could be allocated while still being cleaned up from a previous release. Remove explicit mutex locking in syncpt_release as kref_put_mutex() handles this atomically.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.13
References 7
git.kernel.org
- stable/c/ca9388fba50dac2eb71c13702b7022a801bef90e
- stable/c/4aeaece518fa4436af93d1d8b786200d9656ff4b
- stable/c/6245cce711e2cdb2cc75c0bb8632952e36f8c972
- stable/c/4e6e07ce0197aecfb6c4a62862acc93b3efedeb7
- stable/c/d138f73ffb0c57ded473c577719e6e551b7b1f27
- stable/c/79197c6007f2afbfd7bcf5b9b80ccabf8483d774
- stable/c/c7d393267c497502fa737607f435f05dfe6e3d9b