SB2023072738 - SUSE update for the Linux Kernel

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2023-20593)

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

The vulnerability exists due to a use-after-free error in AMD Zen2 processors. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability was dubbed Zenbleed.

2) Use-after-free (CVE-ID: CVE-2023-2985)

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

The vulnerability exists due to a use-after-free error within the hfsplus_put_super() function in fs/hfsplus/super.c. A local user can trigger a use-after-free error and crash the kernel.

3) Out-of-bounds write (CVE-ID: CVE-2023-35001)

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

The vulnerability exists due to a boundary error within the nft_byteorder() function. A local user can trigger an out-of-bounds write and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2023/suse-su-20233006-1/