i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()
i3c_device_get_supported_xfer_mode() uses dev->desc to obtain the
master controller. However, dev->desc must not be dereferenced unless
bus->lock is held, and this function does not take that lock.
The function only needs access to the master controller associated with
the device's bus. Use dev->bus instead, which is always valid for the
lifetime of the device and does not require dereferencing dev->desc.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux