SB2023021641 - SUSE update for the Linux Kernel

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Spoofing attack (CVE-ID: CVE-2020-24588)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Windows Wireless Networking. A remote attacker on the local network can spoof page content.

2) Use-after-free (CVE-ID: CVE-2022-4382)

The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the gadgetfs Linux driver. An attacker with physical access to the system can trigger a use-after-free by manipulating the external device with gadgetfs and execute arbitrary code.

3) NULL pointer dereference (CVE-ID: CVE-2022-47929)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the traffic control subsystem in Linux kernel. A local user can pass pass a specially crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands and perform a denial of service (DoS) attack.

4) Integer overflow (CVE-ID: CVE-2023-0179)

The vulnerability allows a local  user to escalate privileges on the system.

The vulnerability exists due to an integer overflow within the nft_payload_copy_vlan() function in Linux kernel Netfilter. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.

5) Use-after-free (CVE-ID: CVE-2023-0266)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the snd_ctl_elem_read() function in the Linux kernel sound subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2023/suse-su-20230394-1/