Linux Kernel Vulnerability in Event Context Management
CVE-2025-37878
What is CVE-2025-37878?
A vulnerability exists in the Linux kernel related to performance monitoring events, specifically in the handling of event context initialization. Improper assignment of the child event context prior to its validation can result in unexpected behavior during cleanup operations. This issue arose from a complex interaction of multiple code changes over many years. The solution involves adjusting the sequence of context assignment to ensure that it is performed immediately after the event's initial validation, preventing the potential triggering of warnings related to the event context's state when accessed later in the code.
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Affected Version(s)
Linux 7ef5aa081f989ecfecc1df02068a80aebbd3ec31 < 90dc6c1e3b200812da8d0aa030e1b7fda8226d0e
Linux 1209b0b29fd472e7dbd2b06544b019dd9f9b7e51
Linux c70ca298036c58a88686ff388d3d367e9d21acf0 < 0ba3a4ab76fd3367b9cb680cad70182c896c795c