PT-2025-52942 · Linux+1 · Linux Kernel+1

Published 2025-12-24 · Updated 2026-05-26 · CVE-2023-53867

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw within the Ceph subsystem related to capability trimming. Specifically, a use-after-free condition can occur when trimming capabilities after releasing the session capability lock. This happens when a capability is removed by another thread after the lock is released but before it is used in a callback, leading to a potential crash. The issue arises from a lack of verification of the capability's existence immediately after acquiring the ceph lock.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2023-53867

RHSA-2023:6583

RHSA-2024:3138

Affected Products

Debian

Linux Kernel

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53867.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-53867 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53867 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53867 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53867 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-53867 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53867 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53867 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53867 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53867 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53867 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/2004868119077290266 · Twitter Post
• https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e · Note
• https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb · Note