CVE-2026-16517

Publication date 21 July 2026

Last updated 8 October 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

2.9 · Low

Score breakdown

Description

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.

Status

Package Ubuntu Release Status

Patch details

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Package Patch details

Severity score breakdown

CVSS version: CVSS v3.0

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

References

Related Ubuntu Security Notices (USN)

    • USN-8902-1
    • libarchive vulnerability
    • 8 October 2026

Other references

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