# CVE-2025-45582: GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file's name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains '..'" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in wh

CVE-2025-45582 is fixed in 2 products on 1 platform, first by RHSA-2026:0135, released July 11, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-45582
- Priority: Routine
- CVSS: 5.6 (Moderate)
- EPSS: 0.0049
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 11, 2025
- Weakness: Path Traversal: '../filedir'
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-45582

## Description

The GNU tar program can save multiple files in an archive and restore files from an archive.  Security Fix(es):  * tar: Tar path traversal (CVE-2025-45582)  * tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)  * tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore path escape (CVE-2026-18477)  * tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)  Bug Fix(es) and Enhancement(s):  * tar: --one-top-level with absolute path fails [rhel-8.10.z] (JIRA:RHEL-144019)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tar RHEL 10 | 1.35-7.el10_0.2 | [RHSA-2026:0135](https://patchblox.com/security/data/fix/linux/rhsa-2026-0135.md) | Jul 11, 2025 |
| Linux | tar RHEL 8 | 2:1.30-13.el8_10 | [RHSA-2026:70390](https://patchblox.com/security/data/fix/linux/rhsa-2026-70390.md) | Sep 23, 2026 |
| Linux | tar RHEL 9 | 2:1.34-9.el9_7 | [RHSA-2026:0067](https://patchblox.com/security/data/fix/linux/rhsa-2026-0067.md) | Jan 16, 2026 |
| Linux | tar Ubuntu 22.04.1 LTS (jammy) | 1.34+dfsg-1ubuntu0.1.22.04.4 | [tar 1.34+dfsg-1ubuntu0.1.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-tar-1.34-dfsg-1ubuntu0.1.22.04.4.md) | Jul 11, 2025 |
| Linux | tar Ubuntu 24.04.5 LTS (noble) | 1.35+dfsg-3ubuntu0.2 | [tar 1.35+dfsg-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-tar-1.35-dfsg-3ubuntu0.2.md) | Jul 11, 2025 |
| Linux | tar Ubuntu 26.04.1 LTS (resolute) | 1.35+dfsg-4ubuntu0.2 | [tar 1.35+dfsg-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-tar-1.35-dfsg-4ubuntu0.2.md) | Jul 11, 2025 |
| Linux | tar almalinux 10 | 2:1.35-9.el10_1 | [ALSA-2026:0002](https://patchblox.com/security/data/fix/linux/alsa-2026-0002.md) | Jan 5, 2026 |
| Linux | tar almalinux 8 | 2:1.30-13.el8_10 | [ALSA-2026:70390](https://patchblox.com/security/data/fix/linux/alsa-2026-70390.md) | Sep 22, 2026 |
| Linux | tar almalinux 9 | 2:1.34-9.el9_7 | [ALSA-2026:0067](https://patchblox.com/security/data/fix/linux/alsa-2026-0067.md) | Jan 5, 2026 |
| Linux | tar ol 10 | 2:1.35-9.el10_1 | [ELSA-2026-0002](https://patchblox.com/security/data/fix/linux/elsa-2026-0002.md) | Jan 5, 2026 |
| Linux | tar ol 8 | 2:1.30-13.el8_10 | [ELSA-2026-70390](https://patchblox.com/security/data/fix/linux/elsa-2026-70390.md) | Sep 23, 2026 |
| Linux | tar ol 9 | 2:1.34-9.el9_7 | [ELSA-2026-0067](https://patchblox.com/security/data/fix/linux/elsa-2026-0067.md) | Jan 5, 2026 |
| Linux | tar opensuse-leap 15.6 | 1.34-150000.3.37.1 | [SUSE-SU-2026:1177-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1177-1.md) | Apr 2, 2026 |
| Linux | tar opensuse-leap 16.0 | 1.35-160000.4.1 | [OPENSUSE-SU-2026:21070-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21070-1.md) | Jun 26, 2026 |
| Linux | tar rocky 10 | 2:1.35-9.el10_1 | [RLSA-2026:0002](https://patchblox.com/security/data/fix/linux/rlsa-2026-0002.md) | Jan 5, 2026 |
| Linux | tar rocky 8 | 2:1.30-13.el8_10 | [RLSA-2026:70390](https://patchblox.com/security/data/fix/linux/rlsa-2026-70390.md) | Sep 24, 2026 |
| Linux | tar rocky 9 | 2:1.34-9.el9_7 | [RLSA-2026:0067](https://patchblox.com/security/data/fix/linux/rlsa-2026-0067.md) | Jan 6, 2026 |
| Linux | tar sles 15.6 | 1.34-150000.3.37.1 | [SUSE-SU-2026:1177-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1177-1.md) | Apr 2, 2026 |
| Linux | tar sles 15.7 | 1.34-150000.3.37.1 | [SUSE-SU-2026:1177-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1177-1.md) | Apr 2, 2026 |
| Linux | tar sles 16.0 | 1.35-160000.4.1 | [SUSE-SU-2026:22377-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22377-1.md) | Jun 26, 2026 |
| Linux | tar-scripts Ubuntu 22.04.1 LTS (jammy) | 1.34+dfsg-1ubuntu0.1.22.04.4 | [tar-scripts 1.34+dfsg-1ubuntu0.1.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-tar-scripts-1.34-dfsg-1ubuntu0.1.22.04.4.md) | Jul 11, 2025 |
| Linux | tar-scripts Ubuntu 24.04.5 LTS (noble) | 1.35+dfsg-3ubuntu0.2 | [tar-scripts 1.35+dfsg-3ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-tar-scripts-1.35-dfsg-3ubuntu0.2.md) | Jul 11, 2025 |
| Linux | tar-scripts Ubuntu 26.04.1 LTS (resolute) | 1.35+dfsg-4ubuntu0.2 | [tar-scripts 1.35+dfsg-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-tar-scripts-1.35-dfsg-4ubuntu0.2.md) | Jul 11, 2025 |

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