DEBIAN-CVE-2021-47254
- Source
- https://security-tracker.debian.org/tracker/DEBIAN-CVE-2021-47254
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47254.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-47254
- Upstream
- Published
- 2024-05-21T15:15:14Z
- Modified
- 2025-09-18T00:03:38Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in gfs2glockshrinkscan The GLFLRU flag is checked under lrulock in gfs2glockremovefromlru() to remove the glock from the lru list in _gfs2glockput(). On the shrink scan path, the same flag is cleared under lrulock but because of condreschedlock(&lrulock) in gfs2disposeglocklru(), progress on the put side can be made without deleting the glock from the lru list. Keep GLFLRU across the race window opened by condreschedlock(&lrulock) to ensure correct behavior on both sides - clear GLFLRU after listdel under lrulock.
- References
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source