CVE-2026-9538 Affecting perl-Env package, versions <0:1.04-396.module+el8.6.0+882+2fa1e48f


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.45% (37th percentile)

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  • Snyk IDSNYK-ROCKY8-PERLENV-18477039
  • published31 Jul 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-9538  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 perl-Env to version 0:1.04-396.module+el8.6.0+882+2fa1e48f or higher.
This issue was patched in RLSA-2026:48225.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-Env package and not the perl-Env package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.

_read_tar() reads each entry's payload with $handle->read($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.

A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.

CVSS Base Scores

version 3.1