Improper control of generation of code ('code injection') in Linux kernel - CVE-2021-3411
Published: March 9, 2021 / Updated: May 21, 2021
Vulnerability identifier: #VU92763
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-3411
CWE-ID: CWE-94
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to execute arbitrary code.
A flaw was found in the Linux kernel in versions prior to 5.10. A violation of memory access was found while detecting a padding of int3 in the linking state. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected software
Linux kernel
Ubuntu
linux-image-oem-20.04 (Ubuntu package)
linux-image-5.6.0-1053-oem (Ubuntu package)
Ubuntu
linux-image-oem-20.04 (Ubuntu package)
linux-image-5.6.0-1053-oem (Ubuntu package)
How to mitigate CVE-2021-3411
Install update from vendor's repository.
linux-image-oem-20.04 (Ubuntu package) - update to 5.6.0.1053.49
linux-image-5.6.0-1053-oem (Ubuntu package) - update to 5.6.0-1053.57
linux-image-5.6.0-1053-oem (Ubuntu package) - update to 5.6.0-1053.57