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Fencer Intel
low 2.1

CVE-2011-1159 json

acpid.c in acpid before 2.0.9 does not properly handle a situation in which a process has connected to acpid.socket but is not reading any…

published 2011-10-05 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1169

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
1
Exploit-DB

Summary

acpid.c in acpid before 2.0.9 does not properly handle a situation in which a process has connected to acpid.socket but is not reading any data, which allows local users to cause a denial of service (daemon hang) via a crafted application that performs a connect system call but no read system calls.

Patch / fix

  • acpid Debian 14, Debian 13, Debian 12 1:2.0.9-1

debian advisories DEBIAN-CVE-2011-1159

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-1159 updated cvss 2.1

acpid: blocked writes can lead to acpid daemon hang

  • Red Hat Enterprise Linux 4 acpid Red Hat Enterprise Linux 5 acpid Red Hat Enterprise Linux 6 acpid
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-35240)
  2. Published

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-35240 acpid 1.0.x - Multiple Local Denial of Service Vulnerabilities dos, 2011-01-19
  • openwall.com http://www.openwall.com/lists/oss-security/2011/03/15/7 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2011/01/19/4 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2011/03/15/12 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.