{"action":"Upgrade linux to 4.3.3-3 or later.","affected":[{"fixed":"4.3.3-3","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.3.3-3"],"id":"tcs_01M5NB9PKG6MQB7EBJMSY703NE","modified_at":"2026-09-09T07:01:38.077390909Z","published_at":"2016-02-08T03:59:02.010Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2015-7550","https://security-tracker.debian.org/tracker/CVE-2015-7550"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2015-7550#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2015-7550"}],"summary":"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 dereferen"}