CVE-2014-3153
Linux Kernel Privilege Escalation Vulnerability
Linux Kernel
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 25 May 2022. US federal agencies were required to remediate it by 15 June 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 37.2%, which is higher than 98.5% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2014-3153 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2014-3153.
What does CVE-2014-3153 affect?
CVE-2014-3153 affects Linux Kernel. The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
How severe is CVE-2014-3153?
CVE-2014-3153 is rated HIGH with a CVSS base score of 7.8. EPSS puts the probability of exploitation in the next 30 days at 37.2%, higher than 98.5% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 15 June 2022.
How should organisations respond to CVE-2014-3153?
Apply the vendor patch for Linux Kernel as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.