Integer overflow in Red Hat Enterprise Linux 10
CVE-2026-16517
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.
Vulnerability class: Integer Overflow
EPSS: 0.001 (0.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-16517?
- CVE-2026-16517 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under Integer Overflow or Wraparound. CVSS score: 2.9/10. Published 2026-07-21.
- How severe is CVE-2026-16517?
- Low severity. CVSS v3 base score is 2.9 out of 10.