CVE-2024-53213

HIGH

Linux Kernel < 6.1.120 - Double Free

Title source: rule

Description

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.

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 2.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE
CWE-415
Status published

Affected Products (5)

linux/linux_kernel < 6.1.120
linux/Kernel < 6.1.120linux
linux/Kernel < 6.6.64linux
linux/Kernel < 6.11.11linux
linux/Kernel < 6.12.2linux

Timeline

Published Dec 27, 2024
Tracked Since Feb 18, 2026