CVE-2023-53867

In the Linux kernel, the following vulnerability has been resolved: ceph: fix potential use-after-free bug when trimming caps When trimming the caps and just after the 'session->s_cap_lock' is released in ceph_iterate_session_caps() the cap maybe removed by another thread, and when using the stale cap memory in the callbacks it will trigger use-after-free crash. We need to check the existence of the cap just after the 'ci->i_ceph_lock' being acquired. And do nothing if it's already removed.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831
https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb
https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800
https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-24 11:15

Updated : 2026-08-04 10:19

NVD link : CVE-2023-53867

Mitre link : CVE-2023-53867

CVE.ORG link : CVE-2023-53867

JSON object : View

Products Affected

No product.

CWE

No CWE.

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