Vulnerability · Published Jun 9, 2025 · Assigned by redhat
CVE-2025-5917Libarchive: off by one error in build_ustar_entry_name() at archive_write_set_format_pax.c
Low 2.8
In plain English
A low-severity out-of-bounds write in libarchive. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A vulnerability has been identified in the libarchive library. This flaw involves an 'off-by-one' miscalculation when handling prefixes and suffixes for file names. This can lead to a 1-byte write overflow. While seemingly small, such an overflow can corrupt adjacent memory, leading to unpredictable program behavior, crashes, or in specific circumstances, could be leveraged as a building block for more sophisticated exploitation. This bug affects libarchive versions prior to 3.8.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libarchive | 3.6.2-1+deb12u3 | DEBIAN-CVE-2025-5917 |
| Debian:13 | libarchive | 3.7.4-4 | DEBIAN-CVE-2025-5917 |
| Debian:14 | libarchive | 3.7.4-4 | DEBIAN-CVE-2025-5917 |
| Ubuntu:22.04:LTS | libarchive | 3.6.0-1ubuntu1.5 | USN-7601-1 |
| Ubuntu:22.04:LTS | libarchive | 3.6.0-1ubuntu1.5 | UBUNTU-CVE-2025-5917 |
| Ubuntu:24.04:LTS | libarchive | 3.7.2-2ubuntu0.5 | UBUNTU-CVE-2025-5917 |
| Ubuntu:24.04:LTS | libarchive | 3.7.2-2ubuntu0.5 | USN-7601-1 |
| Ubuntu:25.10 | libarchive | 3.7.7-0ubuntu3 | UBUNTU-CVE-2025-5917 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| libarchive | 0 – before 3.8.0 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
References
- https://access.redhat.com/security/cve/CVE-2025-5917 vdb-entry, x_refsource_REDHAT
- RHBZ#2370874 issue-tracking, x_refsource_REDHAT
- https://github.com/libarchive/libarchive/pull/2588
- https://github.com/libarchive/libarchive/releases/tag/v3.8.0