#VU66808 Permissions, Privileges, and Access Controls in Linux kernel - CVE-2022-36123
Published: August 29, 2022
Vulnerability identifier: #VU66808
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-36123
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to Linux kernel lacks a certain clear operation for the block starting symbol (.bss). A local user on the Xen PV guest OS can perform a denial of service attack or escalate privileges on the guest OS.
Remediation
Install updates from vendor's website.
External links
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2022-128.md
- https://github.com/torvalds/linux/commit/74a0032b8524ee2bd4443128c0bf9775928680b0
- https://sick.codes/sick-2022-128
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.13
- https://github.com/torvalds/linux/commit/96e8fc5818686d4a1591bb6907e7fdb64ef29884