SB2025091264 - SUSE update for the Linux Kernel (Live Patch 27 for SLE 15 SP5)

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Improper locking (CVE-ID: CVE-2025-21701)

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

The vulnerability exists due to improper locking within the ethnl_ops_begin() function in net/ethtool/netlink.c. A local user can perform a denial of service (DoS) attack.

2) Use-after-free (CVE-ID: CVE-2025-37890)

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

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

3) Use-after-free (CVE-ID: CVE-2025-38000)

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

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

4) Use-after-free (CVE-ID: CVE-2025-38001)

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

The vulnerability exists due to a use-after-free error within the cl_in_el_or_vttree(), hfsc_change_class() and hfsc_enqueue() functions in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.

5) Use-after-free (CVE-ID: CVE-2025-38212)

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

The vulnerability exists due to a use-after-free error within the shm_try_destroy_orphaned() function in ipc/shm.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/2025/suse-su-202503195-1/