Linux Kernel Vulnerability in Ring Buffer Processing

CVE-2023-53668

What is CVE-2023-53668?

A critical flaw in the Linux Kernel's ring buffer implementation can lead to a soft lockup when reading from the trace_pipe file. The issue arises from an infinite loop during the reading process, triggered by conditions where the user buffer is not filled as expected. This situation can occur when the internal entries in the ring buffer are not accurately cleared after a reset, causing erroneous behavior in how entries are counted and managed. This vulnerability highlights the importance of proper buffer management and the potential for serious system performance issues.

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