Description
read_header in archive_read_support_format_rar.c in libarchive 3.3.2 suffers from an off-by-one error for UTF-16 names in RAR archives, leading to an out-of-bounds read in archive_read_format_rar_read_header.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libarchive | 3.2.2-4.1 | — |
| Debian 13 | libarchive | 3.2.2-4.1 | — |
| Debian 12 | libarchive | 3.2.2-4.1 | — |
| Debian 9 | libarchive | 3.2.2-2+deb9u1 | DSA-4360-1 |
| Debian 8 | libarchive | 3.1.2-11+deb8u4 | DLA-1600-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libarchive | 3.2.2-3.1ubuntu0.2 | USN-3859-1 |
| Ubuntu 16.04 LTS | libarchive | 3.1.2-11ubuntu0.16.04.5 | USN-3859-1 |
| Ubuntu 14.04 LTS | libarchive | 3.1.2-7ubuntu2.7 | USN-3859-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | bsdtar +2 | 3.3.3-1.el8 | RHEA-2021:1580 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | libarchive-devel | 3.3.3-1.el8 | ALEA-2021:1580 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES 15 | libarchive | 3.3.2-3.3.2 | SUSE-SU-2018:3571-1, SUSE-RU-2021:2757-1 |
| SLES 12 SP5 | libarchive | 3.1.2-26.6.1 | SUSE-SU-2019:3092-1 |
| SLES 12 SP4 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2019:3092-1, SUSE-SU-2018:3640-2 |
| SLES 12 SP3 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES for SAP 15 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES for SAP 12 SP5 | libarchive | 3.1.2-26.6.1 | SUSE-SU-2019:3092-1 |
| SLES for SAP 12 SP4 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2019:3092-1, SUSE-SU-2018:3640-2 |
| SLES for SAP 12 SP3 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-1 |
| SLE HPC 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLE HPC 15 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Server 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Retail Branch Server 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Proxy 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Enterprise Storage 6 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.9 | libarchive | 3.3.3-r0 | — |
| Alpine v3.8 | libarchive | 3.3.3-r0 | — |
| Alpine v3.7 | libarchive | 3.3.3-r0 | — |
Advisories 11
- ALEA-2021:1580 libarchive bug fix and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2025-0227 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- RHEA-2021:1580 Red Hat Enhancement Advisory: libarchive bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3859-1 libarchive vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4360-1 libarchive - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1600-1 libarchive - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:3640-1 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3092-1 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-RU-2021:2757-1 Recommended update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3640-2 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3571-1 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/libarchive/libarchive/commit/5562545b5562f6d12a4ef991fae158bf4ccf92b6
- USN-3859-1 vendor-advisory
- https://bugs.debian.org/875974
- [debian-lts-announce] 20181129 [SECURITY] [DLA 1600-1] libarchive security update mailing-list
- DSA-4360 vendor-advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=573
- GLSA-201908-11 vendor-advisory