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The CVE-2025-37897 vulnerability stems from an incorrect assertion within the `plfxlc_mac_release()` function in the Linux kernel’s PureLiFi (plfxlc) Wi-Fi driver. This function contained an assert statement checking that the `mac->lock` spinlock was held before execution. However, this assertion was erroneous because the function is called during error paths, such as when the USB device probe fails or upon device disconnection. In these scenarios, the driver is not actively operating, and the lock should not, and cannot, be held. The flawed assert triggers a kernel warning (splat) when the condition is false, potentially degrading system stability. This is a bug in the driver’s internal locking validation logic, not a typical memory corruption issue.
Platform: Linux Kernel
Version: drivers/net/wireless/purelifi/plfxlc/
Vulnerability: Erroneous Assert
Severity: Low
date: 05/20/2025
Prediction: Patch expected 05/27/2025
What Undercode Say:
`grep -r “plfxlc_mac_release” drivers/net/wireless/`
`syzkaller –test /sys/kernel/debug/kcov`
`echo “scan” | sudo tee /sys/kernel/debug/dynamic_debug/control`
How Exploit:
Trigger failed USB probe.
Protection from this CVE
Update kernel. Apply patch.
Impact:
Kernel warning. Potential instability.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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