Bug 2431196 (CVE-2025-15281)

Summary: CVE-2025-15281 glibc: wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: ashankar, codonell, dj, fweimer, pfrankli, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in glibc. When the wordexp function is called with the flags WRDE_REUSE and WRDE_APPEND, it may return uninitialized memory. If the caller inspects the we_wordv array or calls the wordfree function to free the allocated memory, the process will abort, resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2431277, 2431278, 2431279, 2431280, 2431281, 2431282    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-20 14:01:36 UTC
Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

Comment 2 errata-xmlrpc 2026-02-17 10:02:07 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2786 https://access.redhat.com/errata/RHSA-2026:2786

Comment 3 errata-xmlrpc 2026-03-17 17:21:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:4772 https://access.redhat.com/errata/RHSA-2026:4772

Comment 8 errata-xmlrpc 2026-05-19 08:35:46 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:18139 https://access.redhat.com/errata/RHSA-2026:18139