SB2023121376 - SUSE update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP5)
Published: December 13, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2023-2163)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in BPF verifier caused by improper marking of
registers for precision tracking in certain situations. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
2) Resource management error (CVE-ID: CVE-2023-3777)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper handling of table rules flush in certain circumstances within the netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can perform a denial of service (DoS) attack or execute arbitrary code with elevated privileges.
3) Use-after-free (CVE-ID: CVE-2023-4622)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the unix_stream_sendpage() function in af_unix 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-2023-5345)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the smb3_fs_context_parse_param() function in fs/smb/client component. A remote attacker can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.