SB2023020340 - openEuler 22.03 LTS SP1 update for kernel

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2023-20928)

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

The vulnerability exists due to a use-after-free error in Binder driver. A local application can trigger a race condition and execute arbitrary code with elevated privileges.

2) Heap-based buffer overflow (CVE-ID: CVE-2023-0210)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the ksmbd_decode_ntlmssp_auth_blob() function in ksmbd when handling NTLMv2 authentication. A remote attacker can send specially crafted data to ksmbd, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

3) Integer overflow (CVE-ID: CVE-2023-23559)

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

The vulnerability exists due to integer overflow within the rndis_query_oid() function in drivers/net/wireless/rndis_wlan.c. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.

4) Use-after-free (CVE-ID: CVE-2022-4696)

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

The vulnerability exists due to a use-after-free error in io_uring and the IORING_OP_SPLICE operation. A local user can trigger a use-after-free error and 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-2023-1053