SB2026083032 - openEuler 20.03 LTS SP4 update for kernel

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-68160)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in ceph_handle_caps() and ceph_update_snap_trace() when processing a crafted Ceph MDS caps message with a malicious snap_trace_len value. A remote attacker can send a specially crafted message to disclose sensitive information.

Exploitation requires a malicious or compromised MDS to send a version 1 message so the IMPORT path is reached without prior version-gated validation of snap_trace_len.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3531