USN-4255-2: Linux kernel (HWE) vulnerabilities
USN-4255-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information. (CVE-2019-14615) It was discovered that a race condition can lead to a use-after-free while destroying GEM contexts in the i915 driver for the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-7053)
Affected Software
Event History
Frequently Asked Questions
What is the severity of USN-4255-2?
The severity of USN-4255-2 is not mentioned in the provided information.
Which versions of Ubuntu are affected by USN-4255-2?
Ubuntu 16.04 LTS is affected by USN-4255-2.
What is the remedy for USN-4255-2?
To fix USN-4255-2, update your Linux kernel to version 4.15.0-1058.60~16.04.1.
What are the referenced CVEs for USN-4255-2?
The referenced CVEs for USN-4255-2 are CVE-2019-14615 and CVE-2020-7053.
Where can I find more information about USN-4255-2?
You can find more information about USN-4255-2 on the Ubuntu Security Notices website.