CVE-2005-2098

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2005-08-23 · updated 2026-06-16

Description

The KEYCTL_JOIN_SESSION_KEYRING operation in the Linux kernel before 2.6.12.5 contains an error path that does not properly release the session management semaphore, which allows local users or remote attackers to cause a denial of service (semaphore hang) via a new session keyring (1) with an empty name string, (2) with a long name string, (3) with the key quota reached, or (4) ENOMEM.

Affected products

Linux kernel: 2.6.0, 2.6.0-test1, 2.6.0-test10, 2.6.0-test11, 2.6.0-test2, 2.6.0-test3 (+42)

References

http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.12.5
http://secunia.com/advisories/16355/
http://secunia.com/advisories/17073
http://www.mandriva.com/security/advisories?name=MDKSA-2005:220
http://www.redhat.com/support/errata/RHSA-2005-514.html
http://www.securityfocus.com/archive/1/427980/100/0/threaded
http://www.securityfocus.com/bid/14521
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9638
https://usn.ubuntu.com/169-1/
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.12.5
http://secunia.com/advisories/16355/
http://secunia.com/advisories/17073

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