CVE-2010-2960: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The keyctl_session_to_parent function in security/keys/keyctl.c in the Linux kernel 2.6.35.4 and earlier expects that a certain parent session keyring exists, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 9.04 only; version 9.10 only; version 10.04 only; version 10.10 only
• Linux Linux Kernel: before 2.6.35.4 (fixed in 2.6.35.4)
• Suse Suse Linux Enterprise Desktop: version 11 only
• Suse Suse Linux Enterprise Server: version 11 only

Published 2010-09-08. Last modified 2026-06-16.