Bug 2481314 (CVE-2026-42496)

Summary: CVE-2026-42496 perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in perl-Archive-Tar. Versions before 3.08 for Perl are vulnerable to a path traversal issue. An attacker can craft a malicious tar archive containing symlinks with targets outside the intended extraction directory. This vulnerability allows the attacker to read or write to arbitrary files on the system, leading to potential information disclosure or data corruption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2484320    
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Description OSIDB Bzimport 2026-05-26 02:01:14 UTC 
Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.

_make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.

A subsequent open through the extracted name reads or writes the attacker chosen path.
Comment 2 errata-xmlrpc 2026-06-29 02:20:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:30852 https://access.redhat.com/errata/RHSA-2026:30852
Comment 3 errata-xmlrpc 2026-06-29 03:50:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:30851 https://access.redhat.com/errata/RHSA-2026:30851
Comment 4 errata-xmlrpc 2026-06-29 04:34:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:30856 https://access.redhat.com/errata/RHSA-2026:30856
Comment 5 errata-xmlrpc 2026-06-29 18:09:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:30857 https://access.redhat.com/errata/RHSA-2026:30857