Allocation of Resources Without Limits or Throttling Affecting perl-Archive-Tar package, versions <0:3.02-512.el10_2.2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.45% (37th percentile)

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  • Snyk IDSNYK-RHEL10-PERLARCHIVETAR-18510231
  • published3 Aug 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-9538  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade RHEL:10 perl-Archive-Tar to version 0:3.02-512.el10_2.2 or higher.
This issue was patched in RHSA-2026:49523.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-Archive-Tar package and not the perl-Archive-Tar package as distributed by RHEL. See How to fix? for RHEL:10 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