Medium [CVE-2026-80534] fix ilock leak on error in xfs_dq_get_next_id
This medium-severity Red Hat Linux advisory covers CVE-2026-80534 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
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Summary
In the Linux kernel, the following vulnerability has been resolved: xfs: fix ilock leak on error in xfs_dq_get_next_id xfs_dq_get_next_id() takes the quota inode ILOCK before calling xfs_iread_extents(). If xfs_iread_extents() fails, the function returns immediately without releasing the lock, leaking the quota inode ILOCK.
This can leave the quota inode locked and cause subsequent quota operations to hang. Fix this by jumping to a common unlock path on error instead of returning directly.
A flaw was found in the XFS filesystem component of the Linux kernel. The xfs_dq_get_next_id() function fails to release an inode lock (ilock) if an error occurs during extent reading.
This flaw has a LOW impact. A local user able to reach the XFS quota control path (e.g.
Q_XGETNEXTQUOTA) on a mounted XFS filesystem with quotas enabled could, when the extent-loading error condition occurs, cause a denial of service limited to XFS quota management. Red Hat severity: Low — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-667. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation checklist
- This issue only affects systems using XFS filesystems with quota support enabled and is limited to XFS quota management operations. No mitigation other than applying the kernel update meets Red Hat Product Security's criteria for ease of use, broad applicability, and stability.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
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