In the Linux kernel, the following vulnerability has been resolved:
net: usb: lan78xx: Fix double free issue with interrupt buffer allocation
In lan78xx_probe(), the buffer `buf` was being freed twice: once
implicitly through `usb_free_urb(dev->urb_intr)` with the
`URB_FREE_BUFFER` flag and again explicitly by `kfree(buf)`. This caused
a double free issue.
To resolve this, reordered `kmalloc()` and `usb_alloc_urb()` calls to
simplify the initialization sequence and removed the redundant
`kfree(buf)`. Now, `buf` is allocated after `usb_alloc_urb()`, ensuring
it is correctly managed by `usb_fill_int_urb()` and freed by
`usb_free_urb()` as intended.
References
Configurations
Configuration 1 (hide)
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History
03 Nov 2025, 21:17
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Information
Published : 2024-12-27 14:15
Updated : 2025-11-03 21:17
NVD link : CVE-2024-53213
Mitre link : CVE-2024-53213
CVE.ORG link : CVE-2024-53213
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-415
Double Free
