Description
acpid 1.0.4 sets an unrestrictive umask, which might allow local users to leverage weak permissions on /var/log/acpid, and obtain sensitive information by reading this file or cause a denial of service by overwriting this file, a different vulnerability than CVE-2009-4033.
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 | acpid | 1.0.6 | — |
| Debian 13 | acpid | 1.0.6 | — |
| Debian 12 | acpid | 1.0.6 | — |
| Debian 5.0 | acpid | 1.0.8-1lenny2 | DSA-1960-1 |
| Debian 4.0 | acpid | 1.0.4-5etch2 | DSA-1960-1 |
Advisories 1
- DSA-1960-1 acpid - weak file permissions Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=542926
- 1023284 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=515062
- DSA-1960 vendor-advisory
- acpid-umask-weak-security(54676) vdb-entry
- RHSA-2009:1642 vendor-advisory
- MDVSA-2009:343 vendor-advisory
- MDVSA-2009:342 vendor-advisory