PT-2025-53957 · Linux · Linux Kernel
Published
2025-12-30
·
Updated
2026-02-24
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CVE-2022-50839
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel’s jbd2 subsystem related to buffer head reference counting. Specifically, within the
jbd2 fc wait bufs function, if a buffer is not up-to-date, the function returns an error without updating journal->j fc off. Subsequently, jbd2 fc release bufs may attempt to release a buffer head from an incorrect offset, potentially leading to a buffer head reference count leak. This occurs when the buffer head (bh) is NULL during the terminal release process.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linux Kernel