Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
A flaw in the GNU C Library (glibc) affects the wordexp function when used with the WRDE_APPEND flag, causing it to return invalid memory in the we_wordv member. Subsequent processing by wordfree may cause the process to abort, resulting in a denial of service (DoS). This vulnerability requires local access and specific application usage patterns. Red Hat has released an update addressing this issue in their hardened images RPMs.
AI Analysis
Technical Summary
CVE-2026-6368 is a vulnerability in glibc where a local attacker or application invoking the wordexp function with the WRDE_APPEND flag can cause the function to return invalid memory in the we_wordv member. When this invalid memory is later processed by wordfree, it can cause the process to abort, leading to a denial of service. The flaw is due to improper handling of memory in this specific code path. Exploitation requires the application to call wordexp with WRDE_APPEND followed by wordfree, limiting the impact to applications using this pattern. Red Hat has issued a security advisory and released updated RPM packages for their hardened images to fix this issue.
Potential Impact
The vulnerability can cause a denial of service by crashing affected processes. It does not impact confidentiality or integrity. Exploitation requires local access and specific function usage, limiting the scope to applications that use wordexp with WRDE_APPEND followed by wordfree. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated RPM packages for their hardened images that fix this vulnerability. Users should apply the official updates as provided in Red Hat Advisory RHSA-2026:53069. No additional mitigations are specified or required beyond applying the update.
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Description
A flaw in the GNU C Library (glibc) affects the wordexp function when used with the WRDE_APPEND flag, causing it to return invalid memory in the we_wordv member. Subsequent processing by wordfree may cause the process to abort, resulting in a denial of service (DoS). This vulnerability requires local access and specific application usage patterns. Red Hat has released an update addressing this issue in their hardened images RPMs.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6368 is a vulnerability in glibc where a local attacker or application invoking the wordexp function with the WRDE_APPEND flag can cause the function to return invalid memory in the we_wordv member. When this invalid memory is later processed by wordfree, it can cause the process to abort, leading to a denial of service. The flaw is due to improper handling of memory in this specific code path. Exploitation requires the application to call wordexp with WRDE_APPEND followed by wordfree, limiting the impact to applications using this pattern. Red Hat has issued a security advisory and released updated RPM packages for their hardened images to fix this issue.
Potential Impact
The vulnerability can cause a denial of service by crashing affected processes. It does not impact confidentiality or integrity. Exploitation requires local access and specific function usage, limiting the scope to applications that use wordexp with WRDE_APPEND followed by wordfree. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated RPM packages for their hardened images that fix this vulnerability. Users should apply the official updates as provided in Red Hat Advisory RHSA-2026:53069. No additional mitigations are specified or required beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:53069
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-6791"]
- Cvss Version
- null
Threat ID: 6a7e0385bf8831d5398fad3a
Added to database: 08/13/2026, 17:48:53 UTC
Last enriched: 08/13/2026, 18:21:10 UTC
Last updated: 08/13/2026, 20:45:52 UTC
Views: 5
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