vulnerability
FreeBSD: VID-7642ba72-5abf-11f0-87ba-002590c1f29c (CVE-2025-31115): FreeBSD -- Use-after-free in multi-threaded xz decoder
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jul 6, 2025 | Jul 8, 2025 | Mar 25, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jul 6, 2025
Added
Jul 8, 2025
Modified
Mar 25, 2026
Description
Problem Description: A worker thread could free its input buffer after decoding, while the main thread might still be writing to it. This leads to an use-after-free condition on heap memory. Impact: An attacker may use specifically crafted .xz file to cause multi-threaded xz decoder to crash, or potentially run arbitrary code under the credential the decoder was executed.
Solutions
freebsd-upgrade-base-14_2-release-p4freebsd-upgrade-base-13_5-release-p2
Rapid7 Labs
2026 Global Threat Landscape Report
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