SB2024042304 - Ubuntu update for linux-lowlatency-hwe-6.5

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2023-52600)

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

The vulnerability exists due to a use-after-free error in fs/jfs/jfs_mount.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

2) Buffer overflow (CVE-ID: CVE-2024-26589)

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

The vulnerability exists due to a boundary error within the adjust_ptr_min_max_vals() function in kernel/bpf/verifier.c. A local user can crash the OS kernel.

3) NULL pointer dereference (CVE-ID: CVE-2024-26591)

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

The vulnerability exists due to a NULL pointer dereference error within the bpf_tracing_prog_attach() function in kernel/bpf/syscall.c. A local user can perform a denial of service (DoS) attack.

4) Input validation error (CVE-ID: CVE-2024-26581)

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

The vulnerability exists due to insufficient validation of user-supplied input in net/netfilter/nft_set_rbtree.c. A locla user can perform a denial of service (DoS) attack.

5) Improper validation of array index (CVE-ID: CVE-2023-52603)

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

The vulnerability exists due to improper validation of array index within the dtSplitRoot() function in fs/jfs/jfs_dtree.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-6743-2