Description
GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.
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 | tar | 1.34+dfsg-1.4 | — |
| Debian 13 | tar | 1.34+dfsg-1.4 | — |
| Debian 12 | tar | 1.34+dfsg-1.2+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | tar | 1.34+dfsg-1ubuntu0.1.22.04.1 | USN-5900-1 |
| Ubuntu 20.04 LTS | tar | 1.30+dfsg-7ubuntu0.20.04.3 | USN-5900-1 |
| Ubuntu 18.04 LTS | tar | 1.29b-2ubuntu0.4 | USN-5900-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | tar | 1.28-2.1ubuntu0.2+esm2 | USN-5900-1 |
| Ubuntu Pro 14.04 LTS | tar | 1.27.1-1ubuntu0.1+esm3 | USN-5900-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | tar | 2:1.34-6.el9_1 | RHSA-2023:0959 |
| RHEL 8 | tar | 2:1.30-6.el8_7.1 | RHSA-2023:0842 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 EUS | tar | 2:1.30-5.el8_6.1 | RHSA-2023:5610 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | tar | 2:1.34-6.el9_1 | ALSA-2023:0959 |
| AlmaLinux 8 | tar | 2:1.30-6.el8_7.1 | ALSA-2023:0842 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | tar | 2:1.34-6.el9_1 | RLSA-2023:0959 |
| Rocky Linux 8 | tar | 2:1.30-6.el8_7.1 | RLSA-2023:0842 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
| SLES 12 SP5 | tar | 1.27.1-15.18.1 | SUSE-SU-2023:0441-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | tar | 1.27.1-15.18.1 | SUSE-SU-2023:0441-1 |
| SLE Real Time 15 SP3 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
| SLE Micro 5.3 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
| SLE Micro 5.2 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
| SLE Micro 5.1 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tar | 1.34-10.1 | openSUSE-SU-2024:12744-1 |
| openSUSE Leap 15.4 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
| openSUSE Leap Micro 5.2 | tar | 1.34-150000.3.31.1 | SUSE-SU-2023:0463-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tar | 1.34-r2 | — |
| Alpine v3.23 | tar | 1.34-r2 | — |
| Alpine v3.22 | tar | 1.34-r2 | — |
| Alpine v3.21 | tar | 1.34-r2 | — |
| Alpine v3.20 | tar | 1.34-r2 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | tar | 1.34-r2 | — |
| Alpine v3.18 | tar | 1.34-r2 | — |
| Alpine v3.17 | tar | 1.34-r2 | — |
| Alpine v3.16 | tar | 1.34-r1 | — |
| Alpine v3.15 | tar | 1.34-r1 | — |
| Alpine v3.14 | tar | 1.34-r1 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tar | 2:1.34-1.amzn2023.0.3 | ALAS2023-2023-153 |
| Amazon Linux 2 | tar | 2:1.26-35.amzn2.0.1 | ALAS2-2023-1994 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | tar | 1.34-3 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | tar | 2:1.34-6.el9_1 | ELSA-2023-0959 |
| Oracle Linux 8 | tar | 2:1.30-6.el8_7.1 | ELSA-2023-0842 |
Advisories 24
- ALSA-2023:0959 Moderate: tar security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:0842 Moderate: tar security update AlmaLinux Security Advisories · Oct 29, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- USN-5900-1 tar vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RLSA-2023:0842 Moderate: tar security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2023:0959 Moderate: tar security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2023:0463-1 Security update for tar SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0441-1 Security update for tar SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:5610 Red Hat Security Advisory: tar security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0959 Red Hat Security Advisory: tar security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:0842 Red Hat Security Advisory: tar security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-1542 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- openSUSE-SU-2024:12744-1 tar-1.34-10.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2024-1307 Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 5, 2025
- WID-SEC-2023-0213 GNU tar: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 18, 2024
- ICSA-24-046-11 Siemens SCALANCE XCM-/XRM-300 CISA ICS & IT advisories · Feb 13, 2024
- SSA-806742 SSA-806742: Multiple Vulnerabilities in SCALANCE XCM-/XRM-300 before V2.4 Siemens ProductCERT · Feb 13, 2024
- WID-SEC-2023-2910 Sophos Unified Threat Management (UTM) Software: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 14, 2023
- ALAS2023-2023-153 Important: tar security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 4, 2023
- ALAS2-2023-1994 Important: tar security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 21, 2023
- ELSA-2023-0959 Moderate: tar security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Feb 28, 2023
- ELSA-2023-0842 Moderate: tar security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 22, 2023
References
- https://savannah.gnu.org/bugs/?62387
- https://savannah.gnu.org/patch/?10307
- FEDORA-2023-123778d70d vendor-advisory
- FEDORA-2023-f72d3caf36 vendor-advisory