Function Graph Tracer Vulnerability in Linux Kernel
CVE-2025-38327
What is CVE-2025-38327?
A vulnerability exists in the Linux kernel's function graph tracer where enabling the funcgraph-args option does not function as intended. Instead of merely recording the arguments, it mistakenly enables the function graph tracer even when it should remain disabled. This results in a faulty state where it unregisters itself without proper registration. When a second attempt is made to enable the tracer, it creates a registration conflict, leading to kernel warnings and potential instability in the tracing mechanism.
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Affected Version(s)
Linux c7a60a733c373eed0094774c141bf2934237e7ff < 300dedd9fe182d4c7424550d81cee595994486d1
Linux c7a60a733c373eed0094774c141bf2934237e7ff < 327e28664307d49ce3fa71ba30dcc0007c270974
Linux 6.15