SB2022081239 - Fedora 36 update for kernel
Published: August 12, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Double Free (CVE-ID: CVE-2022-2588)
The vulnerability allows a local user to escalate privileges on the system.
The
vulnerability exists due to a double free error within the network packet scheduler implementation
in the route4_change() function in Linux kernel when removing all references to a route filter
before freeing it. A local user can run a specially crafted program to
crash the kernel or execute arbitrary code.
2) Resource management error (CVE-ID: CVE-2022-2585)
The vulnerability allows a local user to perform a denial of service (DoS) attack or escalate privileges on the system.
The vulnerability exists due to improper management of internal resources in POSIX CPU timers when handling death of a process. A local user can crash the kernel or execute arbitrary code.
3) Use-after-free (CVE-ID: CVE-2022-2586)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the the netfilter subsystem implementation in Linux kernel when preventing one nft object from referencing an nft set in another nft table. A local user can trigger a use-after-free error and execute arbitrary code on the system with elevated privileges.
Remediation
Install update from vendor's website.