SB20260827109 - Improper resource shutdown or release in Linux kernel ceph

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Main Vulnerability Database SB20260827109

SB20260827109 - Improper resource shutdown or release in Linux kernel ceph

Published: August 27, 2026

Security Bulletin ID SB20260827109
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper resource shutdown or release (CVE-ID: CVE-2026-80528)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a kernel crash.

The vulnerability exists due to improper resource shutdown or release in handle_reply() in fs/ceph/mds_client.c when processing Ceph MDS replies and filling inode and dentry cache data. A remote attacker can send a specially crafted Ceph MDS reply to cause a kernel crash.

The issue occurs because Ceph-private data stored in current->journal_info may be dereferenced by another filesystem during reclaim.


Remediation

Install update from vendor's website.

References