Bug 2363314 (CVE-2025-37796)

Summary: CVE-2025-37796 kernel: wifi: at76c50x: fix use after free access in at76_disconnect
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 14:03:24 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: at76c50x: fix use after free access in at76_disconnect

The memory pointed to by priv is freed at the end of at76_delete_device
function (using ieee80211_free_hw). But the code then accesses the udev
field of the freed object to put the USB device. This may also lead to a
memory leak of the usb device. Fix this by using udev from interface.
Comment 1 Avinash Hanwate 2025-05-02 04:16:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050122-CVE-2025-37796-d6f9@gregkh/T