CVE-2026-97521
- Source
- https://cve.org/CVERecord?id=CVE-2026-97521
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97521.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-97521
- Downstream
- Published
- 2026-09-24T16:05:21Z
- Modified
- 2026-09-29T03:47:28Z
- Summary
- gfs2: fix quota init duplicate scan
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
gfs2: fix quota init duplicate scan
gfs2_quota_init() checks for duplicate quota_change IDs while holding qd_lock and the quota hash bucket bitlock. That path used gfs2_qd_search_bucket(), which takes a lockref reference via lockref_get_not_dead().
On PREEMPT_RT this may sleep, which is not allowed under the bucket bitlock, triggering "sleeping function called from invalid context".
Use a no-ref bucket lookup in this path, then continue duplicate handling without taking a lockref there.
Refactor gfs2_qd_search_bucket() to build on top of the no-ref helper so lookup traversal stays in one place.
This patch fixes a bug reported by syzbot.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97521.json" }- References
-
- https://git.kernel.org/stable/c/7fdcf16e5e14e11028f5bcaa6d25075eb5e876a0
- https://git.kernel.org/stable/c/812a766e2b0a8f4d094393fad13475c57f5f86db
- https://git.kernel.org/stable/c/b99a1f0f18ee50445907f55069e88bcfd8947383
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97521.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-97521
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git