Description
Libarchive through 3.6.2 can cause directories to have world-writable permissions. The umask() call inside archive_write_disk_posix.c changes the umask of the whole process for a very short period of time; a race condition with another thread can lead to a permanent umask 0 setting. Such a race condition could lead to implicit directory creation with permissions 0777 (without the sticky bit), which means that any low-privileged local user can delete and rename files inside those directories.
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libarchive | — | — |
References
Similar Threats
- Unknown ALSA-2025:14130
- Unknown ALSA-2025:14135
- Unknown ALSA-2025:14137
- Unknown ALSA-2025:9420
- Unknown ALSA-2025:7510
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