Vulnerability CVE-2023-52754

Vulnerability CVE-2023-52754

Published: 2024-05-21

Description:

In the Linux kernel, the following vulnerability has been resolved:

media: imon: fix access to invalid resource for the second interface

imon driver probes two USB interfaces, and at the probe of the second
interface, the driver assumes blindly that the first interface got
bound with the same imon driver. It's usually true, but it's still
possible that the first interface is bound with another driver via a
malformed descriptor. Then it may lead to a memory corruption, as
spotted by syzkaller; imon driver accesses the data from drvdata as
struct imon_context object although it's a completely different one
that was assigned by another driver.

This patch adds a sanity check -- whether the first interface is
really bound with the imon driver or not -- for avoiding the problem
above at the probe time.

References:

https://git.kernel.org/stable/c/0f5068519f89d928d6c51100e4b274479123829f

https://git.kernel.org/stable/c/5e0b788fb96be36d1baf1a5c88d09c7c82a0452a

https://git.kernel.org/stable/c/b083aaf5db2eeca9e362723258e5d8698f7dd84e

https://git.kernel.org/stable/c/10ec5a97f8f5a772a1a42b4eb27196b447cd3aa9

https://git.kernel.org/stable/c/2a493a34bd6e496c55fabedd82b957193ace178f

https://git.kernel.org/stable/c/a1766a4fd83befa0b34d932d532e7ebb7fab1fa7

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