VULNERABILITY INTELLIGENCE
CVE-2015-7550
CVSS score5.5 MEDIUM
EPSS probability0.41%
CISA KEVNot currently listed
Published2016-02-08
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.
Weakness classification
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')