comedi: ni_usb6501: fix NULL-deref in command paths
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.6epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
comedi: ni_usb6501: fix NULL-deref in command paths
The driver uses endpoint-sized USB transfer buffers but had no sanity
checks on the sizes. This can lead to zero-size-pointer dereferences or
overflowed transfer buffers in ni6501_port_command() and
ni6501_counter_command() if a (malicious) device has smaller max-packet
sizes than expected (or when doing descriptor fuzz testing).
Add the missing sanity checks to probe().
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7eahttps://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1