Integer Overflow or Wraparound Affecting libarchive package, versions <0:3.7.7-11.el10_2


Severity

Recommended
0.0
low
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-ALMALINUX10-LIBARCHIVE-20056667
  • published23 Sept 2026
  • disclosed21 Sept 2026

Introduced: 21 Sep 2026

CVE-2026-16517  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 libarchive to version 0:3.7.7-11.el10_2 or higher.
This issue was patched in ALSA-2026:69553.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive package and not the libarchive package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_write_zip_header function in archive_write_set_format_zip.c, when ZIP encryption is enabled and the entry file size is close to INT64_MAX, the addition of the encryption overhead to the entry size overflows int64_t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.

CVSS Base Scores

version 3.1