Description
ACPI Event Daemon (acpid) before 1.0.10 allows remote attackers to cause a denial of service (CPU consumption and connectivity loss) by opening a large number of UNIX sockets without closing them, which triggers an infinite loop.
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 | 1.0.10-1 | — |
| Debian 13 | acpid | 1.0.10-1 | — |
| Debian 12 | acpid | 1.0.10-1 | — |
| Debian 5.0 | acpid | 1.0.8-1lenny1 | DSA-1786-1 |
| Debian 4.0 | acpid | 1.0.4-5etch1 | DSA-1786-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | acpid | 1.0.4-7.el5_3.1 | RHSA-2009:0474 |
| RHEL 4 | acpid | 1.0.3-2.el4_7.1 | RHSA-2009:0474 |
| RHEL 3 | acpid | 1.0.2-4 | RHSA-2009:0474 |
| RHEL 2 | acpid | 1.0.1-3 | RHSA-2009:0474 |
Advisories 2
- RHSA-2009:0474 Red Hat Security Advisory: acpid security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1786-1 acpid - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- USN-766-1 vendor-advisory
- acpid-socket-dos(50060) vdb-entry
- RHSA-2009:0474 vendor-advisory
- 34838 third-party-advisory
- 1022182 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=494443
- GLSA-200905-06 vendor-advisory
- 34918 third-party-advisory
- oval:org.mitre.oval:def:7560 vdb-entry signature
- 34914 third-party-advisory
- 35209 third-party-advisory
- FEDORA-2009-5608 vendor-advisory
- 34692 vdb-entry
- DSA-1786 vendor-advisory
- MDVSA-2009:107 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=502583
- 35231 third-party-advisory
- 35010 third-party-advisory
- FEDORA-2009-5578 vendor-advisory
- oval:org.mitre.oval:def:9955 vdb-entry signature