CVE-2026-74319
- Source
- https://cve.org/CVERecord?id=CVE-2026-74319
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74319.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74319
- Downstream
- Published
- 2026-08-15T05:58:16.142Z
- Modified
- 2026-08-16T03:48:34.690047006Z
- Summary
- btrfs: zoned: fix deadlock waiting for ticket during data relocation
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
btrfs: zoned: fix deadlock waiting for ticket during data relocation
When performing data relocation on a zoned filesystem, BTRFS can deadlock in handlereservetickets(). The relocation process is waiting on a space reservation ticket that can never be fulfilled, because the relocation itself is the operation responsible for freeing up that space.
Fix this by introducing a new flush state, BTRFSRESERVEFLUSHZONEDRELOCATION, specifically for data chunk allocation during zoned relocation. Like BTRFSRESERVEFLUSHFREESPACEINODE, this state uses priorityreclaimdataspace() instead of the normal flushing path, which avoids re-entering the relocation code and breaking the deadlock cycle.
In btrfsallocdatachunkondemand(), select this new flush state when the inode belongs to a data relocation root on a zoned filesystem.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74319.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/814c3b4ea357297c507158bceb07bcdc5fbe9808
- https://git.kernel.org/stable/c/f84dbbaa988e1344634a20ddf6c7d51a99f12477
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74319.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74319
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git