SB2023102372 - Ubuntu update for linux-oem-6.1
Published: October 23, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2023-4244)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Linux kernel netfilter: nf_tables component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
2) Integer overflow (CVE-ID: CVE-2023-42752)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow within the __alloc_skb() function. A local user can trigger integer overflow and crash the kernel.
3) Out-of-bounds read (CVE-ID: CVE-2023-42755)
The vulnerability allows a local user to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition within the the IPv4 Resource Reservation Protocol (RSVP) classifier function in the Linux kernel. A local user can trigger an out-of-bounds read error and crash the Linux kernel.
4) Race condition (CVE-ID: CVE-2023-42756)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition in the Netfilter subsystem. A local user can exploit the race between IPSET_CMD_ADD and IPSET_CMD_SWAP and gain crash the kernel.
5) Use-after-free (CVE-ID: CVE-2023-5197)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within Linux kernel netfilter: nf_tables component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.