Bug 2540432 (CVE-2026-97520)

Summary: CVE-2026-97520 kernel: gfs2: move quota_init qc iterator increment
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's GFS2 (Global File System 2) file system. A local user could exploit this flaw by mounting a specially crafted filesystem image, causing an iterator progression error during quota initialization in the gfs2_quota_init() function. Successful exploitation could lead to a Denial of Service (DoS), resulting in a system crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-24 16:47:24 UTC
In the Linux kernel, the following vulnerability has been resolved:

gfs2: move quota_init qc iterator increment

Move qc++ from the loop body into the for-loop increment
expression in gfs2_quota_init().

This keeps iterator progression explicit and avoids mixing pointer
advance with duplicate-slot handling in the loop body.