SB2026030678 - openEuler 22.03 LTS SP4 update for kernel

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2023-53577)

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

The vulnerability exists due to memory corruption within the put_cpu_map_entry(), cpu_map_kthread_stop(), cpu_map_bpf_prog_run() and __cpu_map_entry_alloc() functions in kernel/bpf/cpumap.c. A local user can perform a denial of service (DoS) attack.

2) Memory leak (CVE-ID: CVE-2023-53596)

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

The vulnerability exists due to memory leak within the device_del() function in drivers/base/core.c. A local user can perform a denial of service (DoS) attack.

3) Use-after-free (CVE-ID: CVE-2025-71221)

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

The vulnerability exists due to a use-after-free error within the mmp_pdma_residue() function in drivers/dma/mmp_pdma.c. A local user can escalate privileges on the system.

4) Improper locking (CVE-ID: CVE-2026-23097)

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

The vulnerability exists due to improper locking within the unmap_and_move_huge_page() function in mm/migrate.c. A local user can perform a denial of service (DoS) attack.

5) Input validation error (CVE-ID: CVE-2026-23112)

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

The vulnerability exists due to improper input validation within the nvmet_tcp_free_cmd_buffers() function in drivers/nvme/target/tcp.c. A local user can perform a denial of service (DoS) attack.

6) Use-after-free (CVE-ID: CVE-2026-23216)

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

The vulnerability exists due to a use-after-free error within the iscsit_dec_conn_usage_count() function in drivers/target/iscsi/iscsi_target_util.c. A local user can escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1505