Perl might allow context-dependent attackers to bypass the taint protection mechanism in a child process via duplicate environment variable…

Description

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Advisories 5

• RHSA-2026:6206 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
• USN-2916-1 perl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
• DSA-3501-1 perl - security update Debian Security (DSA / DLA) · Mar 9, 2026
• SUSE-SU-2016:2246-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
• SUSE-SU-2016:2263-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026

References

• GLSA-201701-75 vendor-advisory
• DSA-3501 vendor-advisory
• [porters] 20160301 CVE-2016-2381: duplicate environment variables mailing-list
• USN-2916-1 vendor-advisory
• 83802 vdb-entry
• openSUSE-SU-2016:0881 vendor-advisory
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://www.oracle.com/security-alerts/cpujul2020.html
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
• http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
• http://perl5.git.perl.org/perl.git/commitdiff/ae37b791a73a9e78dedb89fb2429d2628cf58076