Description
Race condition in the setsid function in Linux before 2.6.8.1 allows local users to cause a denial of service (crash) and possibly access portions of kernel memory, related to TTY changes, locking, and semaphores.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +6 | 2.6.9-5.0.3.EL | RHSA-2005:092 |
Advisories 1
- RHSA-2005:092 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- http://linux.bkbits.net:8080/linux-2.6/cset%4041ddda70CWJb5nNL71T4MOlG2sMG8A
- oval:org.mitre.oval:def:10647 vdb-entry signature
- 12598 vdb-entry
- RHSA-2005:092 vendor-advisory
- 20050215 [USN-82-1] Linux kernel vulnerabilities mailing-list
- CLA-2005:930 vendor-advisory