THREATPORT/VULNERABILITY/CVE-2005-2098
MEDIUM SEVERITY

CVE-2005-2098

Linux Kernel vulnerability

CVSS
5.0
EPSS
3.2%
EPSS pct
87th
Exploited
No known
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 vendor
Linux
Affected product
Linux Kernel
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published
2005-08-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2005-2098

  • Confirm whether Linux Linux Kernel is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2005-2098.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-2098

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-2098 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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