Vulnerability Monitor

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CVE-2005-2098

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.

Security Impact Summary

CVE-2005-2098 is a security vulnerability that . Impacting 1 product from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2005, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2005-08-23T04:00:00.000

Last Modified

2026-04-16T00:27:16.627

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8.1	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.8.1.5	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11.1	Yes
Operating System	linux	linux_kernel	2.6.11.2	Yes
Operating System	linux	linux_kernel	2.6.11.3	Yes
Operating System	linux	linux_kernel	2.6.11.4	Yes
Operating System	linux	linux_kernel	2.6.11.5	Yes
Operating System	linux	linux_kernel	2.6.11.6	Yes
Operating System	linux	linux_kernel	2.6.11.7	Yes
Operating System	linux	linux_kernel	2.6.11.8	Yes
Operating System	linux	linux_kernel	2.6.11_rc1_bk6	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6_test9_cvs	Yes

References

http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.12.5 ([email protected])
http://secunia.com/advisories/16355/ Patch, Vendor Advisory ([email protected])
http://secunia.com/advisories/17073 ([email protected])
http://www.mandriva.com/security/advisories?name=MDKSA-2005:220 ([email protected])
http://www.redhat.com/support/errata/RHSA-2005-514.html ([email protected])
http://www.securityfocus.com/archive/1/427980/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/14521 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9638 ([email protected])
https://usn.ubuntu.com/169-1/ ([email protected])
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.12.5 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/16355/ Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/17073 (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDKSA-2005:220 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2005-514.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/427980/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/14521 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9638 (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/169-1/ (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.