Bug 2511400 (CVE-2026-71223) - CVE-2026-71223 gfs2-utils: gfs2-utils: integer overflow in resource group allocation size on 32-bit platforms
Summary: CVE-2026-71223 gfs2-utils: gfs2-utils: integer overflow in resource group all...
Keywords:
Status: NEW
Alias: CVE-2026-71223
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 08:40 UTC by OSIDB Bzimport
Modified: 2026-09-03 11:51 UTC (History)
3 users (show)

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Description OSIDB Bzimport 2026-08-05 08:40:59 UTC
A flaw was found in gfs2-utils. The resource group (rgrp) allocation in rgrp.c computes ri_length * sizeof(struct) where ri_length is a uint32 from on-disk metadata. On 32-bit platforms, this multiplication can overflow uint32_t, resulting in an undersized malloc allocation. Subsequent code then writes resource group data past the allocated buffer, causing heap corruption. On 64-bit platforms (all standard RHEL 8+ architectures: x86_64, aarch64, ppc64le, s390x), size_t is 64 bits and the overflow does not occur. This vulnerability is specific to 32-bit builds of gfs2-utils.


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