CVE catalog

CVE-2026-16517

Severity: Low · CVSS 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Jul 3, 2026, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.10% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libarchive	sid	`3.8.10-2`	fixed
Debian	libarchive	forky	`3.8.9-1`	fixed
Debian	libarchive	trixie	`3.7.4-4+deb13u1`	vulnerable
Debian	libarchive	bookworm	`3.6.2-1+deb12u4`	vulnerable
Debian	libarchive	bookworm-security	`3.6.2-1+deb12u5`	fixed
Ubuntu	libarchive	noble	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive-dev	noble	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive-tools	noble	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive13t64	noble	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive	22.04	`3.4.3-2`	vulnerable
Ubuntu	libarchive	22.04	`3.4.3-2build1`	vulnerable
Ubuntu	libarchive	22.04	`3.5.2-1`	vulnerable
Ubuntu	libarchive	22.04	`3.5.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.2`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.3`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.4`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.5`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.6`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.7`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.8`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.9`	fixed
Ubuntu	libarchive	24.04	`3.6.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1ubuntu2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1.1ubuntu2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.3`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.4`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.5`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.6`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.7`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.8`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive	26.04	`3.7.7-0ubuntu3`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu1`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.1`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.2`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.3`	fixed
Ubuntu	libarchive	pro	`3.4.0-1`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-1build1`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-1ubuntu2`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.1`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.2`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.3`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.4`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.5`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.5+esm1`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.5+esm2`	vulnerable
Ubuntu	libarchive	pro	`3.4.0-2ubuntu1.5+esm3`	vulnerable
Ubuntu	libarchive	22.04	`3.4.3-2`	vulnerable
Ubuntu	libarchive	22.04	`3.4.3-2build1`	vulnerable
Ubuntu	libarchive	22.04	`3.5.2-1`	vulnerable
Ubuntu	libarchive	22.04	`3.5.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.1`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.2`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.3`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.4`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.5`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.6`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.7`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.8`	vulnerable
Ubuntu	libarchive	22.04	`3.6.0-1ubuntu1.9`	fixed
Ubuntu	libarchive	24.04	`3.6.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1ubuntu1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1ubuntu2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-1.1ubuntu2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.1`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.2`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.3`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.4`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.5`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.6`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.7`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.8`	vulnerable
Ubuntu	libarchive	24.04	`3.7.2-2ubuntu0.9`	fixed
Ubuntu	libarchive	26.04	`3.7.7-0ubuntu3`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu1`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.1`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.2`	vulnerable
Ubuntu	libarchive	26.04	`3.8.5-1ubuntu2.3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libarchive	source	sid	`3.8.9-1`	not yet assigned	Not reported	[1142834]
Debian	libarchive	source	forky	`3.8.9-1`	not yet assigned	Not reported	[1142834]
Debian	libarchive	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1142834]
Debian	libarchive	source	bookworm	`3.6.2-1+deb12u5`	not yet assigned	Not reported	[1142834]
Ubuntu	libarchive	deb	noble	`3.7.2-2ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libarchive-dev	deb	noble	`3.7.2-2ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libarchive-tools	deb	noble	`3.7.2-2ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libarchive13t64	deb	noble	`3.7.2-2ubuntu0.9`	Not reported	Not reported	Not reported
Ubuntu	libarchive	deb	22.04	`3.6.0-1ubuntu1.9`	Not reported	USN-8902-1	Not reported
Ubuntu	libarchive	deb	24.04	`3.7.2-2ubuntu0.9`	Not reported	USN-8902-1	Not reported
Ubuntu	libarchive	deb	26.04	`3.8.5-1ubuntu2.3`	Not reported	USN-8902-1	Not reported
Ubuntu	libarchive	deb	22.04	`3.6.0-1ubuntu1.9`	Not reported	UBUNTU-CVE-2026-16517	Not reported
Ubuntu	libarchive	deb	24.04	`3.7.2-2ubuntu0.9`	Not reported	UBUNTU-CVE-2026-16517	Not reported
Ubuntu	libarchive	deb	26.04	`3.8.5-1ubuntu2.3`	Not reported	UBUNTU-CVE-2026-16517	Not reported

[Debian bug #1142834]

Notes

[trixie] libarchive: Can be fixed via point release

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libarchive13]Affected
Source package: [libarchive]
Details (4)
- 3.6.2-1+deb12u4 · amd64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u4 · arm64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
[libarchive-dev]Affected
Source package: [libarchive]
Details (4)
- 3.6.2-1+deb12u4 · amd64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u4 · arm64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
[libarchive-tools]Affected
Source package: [libarchive]
Details (4)
- 3.6.2-1+deb12u4 · amd64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u4 · arm64 · bookworm
  Affected · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- 3.6.2-1+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.2-1+deb12u5
  nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12

[Debian 13 (Trixie)]

[libarchive13t64]Affected
Source package: [libarchive]
Details (2)
- 3.7.4-4+deb13u1 · amd64 · trixie
  Affected
  nvd · libarchive · debian · 13
- 3.7.4-4+deb13u1 · arm64 · trixie
  Affected
  nvd · libarchive · debian · 13
[libarchive-dev]Affected
Source package: [libarchive]
Details (2)
- 3.7.4-4+deb13u1 · amd64 · trixie
  Affected
  nvd · libarchive · debian · 13
- 3.7.4-4+deb13u1 · arm64 · trixie
  Affected
  nvd · libarchive · debian · 13
[libarchive-tools]Affected
Source package: [libarchive]
Details (2)
- 3.7.4-4+deb13u1 · amd64 · trixie
  Affected
  nvd · libarchive · debian · 13
- 3.7.4-4+deb13u1 · arm64 · trixie
  Affected
  nvd · libarchive · debian · 13

Observed: Oct 23, 2026, 9:43:37 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]