Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2024-53213

Disclosure Date: December 27, 2024
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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.

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CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

Products

Weaknesses

Technical Analysis