CVE catalog
CVE-2026-17591
A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that
- Severity
- Low · CVSS 3.6
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.15% · Oct 27, 2026
A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.
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 | vulnerable |
| 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 | vulnerable |
| 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 | vulnerable |
| 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 | vulnerable |
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 | Not reported |
| Debian | libarchive | source | forky | 3.8.9-1 | not yet assigned | Not reported | Not reported |
| Debian | libarchive | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libarchive | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
Notes
[trixie] libarchive: Minor issue [bookworm] libarchive: Minor issue; can be fixed in next update
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libarchive13]Affected
Source package: [libarchive]
Details (4)
3.6.2-1+deb12u4· amd64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u4· arm64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· amd64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· arm64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- [libarchive-dev]Affected
Source package: [libarchive]
Details (4)
3.6.2-1+deb12u4· amd64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u4· arm64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· amd64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· arm64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
- [libarchive-tools]Affected
Source package: [libarchive]
Details (4)
3.6.2-1+deb12u4· amd64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u4· arm64 · bookwormAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· amd64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
3.6.2-1+deb12u5· arm64 · bookworm-securityAffected
nvd · libarchive · debian · bookworm; nvd · libarchive · debian · 12
[Debian 13 (Trixie)]
- [libarchive13t64]Affected
Source package: [libarchive]
Details (2)
3.7.4-4+deb13u1· amd64 · trixieAffected
nvd · libarchive · debian · 13
3.7.4-4+deb13u1· arm64 · trixieAffected
nvd · libarchive · debian · 13
- [libarchive-dev]Affected
Source package: [libarchive]
Details (2)
3.7.4-4+deb13u1· amd64 · trixieAffected
nvd · libarchive · debian · 13
3.7.4-4+deb13u1· arm64 · trixieAffected
nvd · libarchive · debian · 13
- [libarchive-tools]Affected
Source package: [libarchive]
Details (2)
3.7.4-4+deb13u1· amd64 · trixieAffected
nvd · libarchive · debian · 13
3.7.4-4+deb13u1· arm64 · trixieAffected
nvd · libarchive · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-17591]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-17591]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-17591]
- [https://security-tracker.debian.org/tracker/CVE-2026-17591]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-17591.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4017.json]
[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]