SB2023092637 - SUSE update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP5)
Published: September 26, 2023 Updated: May 31, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2023-1829)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tcindex_delete() function. A local user can trigger a use-after-free error and execute arbitrary code with root privileges.
2) Use-after-free (CVE-ID: CVE-2023-31248)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in nft_chain_lookup_byid() function, which failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace. A local user ca trigger a use-after-free error and execute arbitrary code with elevated privileges.
3) Use-after-free (CVE-ID: CVE-2023-3609)
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 Linux kernel net/sched: cls_u32 component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
4) Use-after-free (CVE-ID: CVE-2023-3776)
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 Linux kernel's net/sched: cls_fw component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
5) Stack-based buffer overflow (CVE-ID: CVE-2023-4273)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the implementation of the file name reconstruction function in the exFAT driver in Linux kernel. A local user can trigger a stack overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.