ALSA: usb: Fix UAF at delayed release of MIDI2 EPs
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb: Fix UAF at delayed release of MIDI2 EPs
The recent fix for UAF in ump_to_endpoint() caused another UAF because
it tries to dereference the UMP endpoint object, but this might be
executed at a delayed context where the endpoint has been already
released.
Add private_free to clear the associated data for avoiding the further
dereference for delayed releases.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/422d8a02de5ce6a29d616d55e5ead5dec69ac1d7https://git.kernel.org/stable/c/d217d723c5e43881b952cdb978477f7f2dc0b6d7https://git.kernel.org/stable/c/d431941825d357be7d9ab0cb7505e3a1963bd89ehttps://git.kernel.org/stable/c/f8a80cfb68613fb7e6452b66447dbc63f435d140https://git.kernel.org/stable/c/f9d492a39ebeb1a56f13ec6dd165a18a48dec812