SB2024091924 - SUSE update for the Linux Kernel RT (Live Patch 16 for SLE 15 SP5)

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2023-52846)

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

The vulnerability exists due to a use-after-free error within the prp_create_tagged_frame() function in net/hsr/hsr_forward.c. A local user can escalate privileges on the system.

2) Improper locking (CVE-ID: CVE-2024-26923)

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

The vulnerability exists due to improper locking within the unix_gc() function in net/unix/garbage.c due to garbage collector does not take into account the risk of embryo getting enqueued during the garbage collection. A local user can execute arbitrary code with elevated privileges.

3) Use-after-free (CVE-ID: CVE-2024-40909)

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

The vulnerability exists due to a use-after-free error within the bpf_obj_get(), bpf_link_defer_dealloc_mult_rcu_gp() and bpf_link_free() functions in kernel/bpf/syscall.c. A local user can escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2024/suse-su-20243319-1/