Kernel Vulnerability in OCFS2 Filesystem Affecting Linux Systems
CVE-2025-39842
What is CVE-2025-39842?
A vulnerability exists in the OCFS2 filesystem of the Linux kernel, causing a null pointer dereference during the dismounting of the volume. Specifically, this occurs when attempting to release the journal inode after the journal has been shut down, leading to potential instability and system crashes. By implementing checks for the journal's status before proceeding with journal-related calls, this issue can be effectively mitigated, thereby enhancing the overall stability and security of affected systems.
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Affected Version(s)
Linux da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 < 42c415c53ad2065088cc411d08925effa5b3d255
Linux da5e7c87827e8caa6a1eeec6d95dcf74ab592a01
Linux da5e7c87827e8caa6a1eeec6d95dcf74ab592a01