Red Hat Security Advisory: acl security update
Access Control Lists (ACLs) are used to define fine-grained discretionary access rights for files and directories. The acl packages contain the getfacl and setfacl utilities needed for manipulating access control lists. Security Fix(es): * acl: Symlink traversal privilege escalation via libacl functions (CVE-2026-54369) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This advisory addresses two security vulnerabilities in the acl packages used in Red Hat Hardened Images. CVE-2026-54369 is a symlink traversal privilege escalation vulnerability via libacl functions, and CVE-2026-54370 is a TOCTOU symlink traversal vulnerability affecting the getfacl and setfacl utilities. These issues could allow an attacker to escalate privileges by exploiting symbolic link handling flaws. The update provides fixed versions of acl-2.4.0-0.1.hum1 and related packages for aarch64 and x86_64 architectures. The advisory is rated as Important by Red Hat Product Security. No CVSS score is provided in the advisory.
Potential Impact
The vulnerabilities could allow an attacker to escalate privileges on affected systems by exploiting symlink traversal flaws in the acl package's libacl functions and getfacl/setfacl utilities. This could lead to unauthorized access or modification of files due to improper access control list handling. The advisory classifies the impact as Important, indicating a significant security risk if unpatched.
Mitigation Recommendations
Red Hat has released updated acl, libacl, and libacl-devel packages (version 2.4.0-0.1.hum1) that address these vulnerabilities. Users of Red Hat Hardened Images should apply these updates promptly to remediate the issues. For detailed update instructions, refer to https://images.redhat.com/ and the Red Hat advisory at https://access.redhat.com/errata/RHSA-2026:42736. No alternative mitigations or workarounds are specified.
Red Hat Security Advisory: acl security update
Description
Access Control Lists (ACLs) are used to define fine-grained discretionary access rights for files and directories. The acl packages contain the getfacl and setfacl utilities needed for manipulating access control lists. Security Fix(es): * acl: Symlink traversal privilege escalation via libacl functions (CVE-2026-54369) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses two security vulnerabilities in the acl packages used in Red Hat Hardened Images. CVE-2026-54369 is a symlink traversal privilege escalation vulnerability via libacl functions, and CVE-2026-54370 is a TOCTOU symlink traversal vulnerability affecting the getfacl and setfacl utilities. These issues could allow an attacker to escalate privileges by exploiting symbolic link handling flaws. The update provides fixed versions of acl-2.4.0-0.1.hum1 and related packages for aarch64 and x86_64 architectures. The advisory is rated as Important by Red Hat Product Security. No CVSS score is provided in the advisory.
Potential Impact
The vulnerabilities could allow an attacker to escalate privileges on affected systems by exploiting symlink traversal flaws in the acl package's libacl functions and getfacl/setfacl utilities. This could lead to unauthorized access or modification of files due to improper access control list handling. The advisory classifies the impact as Important, indicating a significant security risk if unpatched.
Mitigation Recommendations
Red Hat has released updated acl, libacl, and libacl-devel packages (version 2.4.0-0.1.hum1) that address these vulnerabilities. Users of Red Hat Hardened Images should apply these updates promptly to remediate the issues. For detailed update instructions, refer to https://images.redhat.com/ and the Red Hat advisory at https://access.redhat.com/errata/RHSA-2026:42736. No alternative mitigations or workarounds are specified.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:34351
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-54370"]
- State
- PUBLISHED
Threat ID: 6a46ecdd27e9c7971943f87d
Added to database: 07/02/2026, 22:57:33 UTC
Last enriched: 08/16/2026, 16:58:29 UTC
Last updated: 10/01/2026, 14:51:08 UTC
Views: 155
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