usb: xhci: Add error handling in xhci_map_urb_for_dma
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 87% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
usb: xhci: Add error handling in xhci_map_urb_for_dma
Currently xhci_map_urb_for_dma() creates a temporary buffer and copies
the SG list to the new linear buffer. But if the kzalloc_node() fails,
then the following sg_pcopy_to_buffer() can lead to crash since it
tries to memcpy to NULL pointer.
So return -ENOMEM if kzalloc returns null pointer.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/4a49d24fdec0a802aa686a567a3989a9fdf4e5ddhttps://git.kernel.org/stable/c/620b6cf2f1a270f48d38e6b8ce199c1acb3e90f4https://git.kernel.org/stable/c/7b6cc33593d7ccfc3011b290849cfa899db46757https://git.kernel.org/stable/c/962300a360d24c5be5a188cda48da58a37e4304dhttps://git.kernel.org/stable/c/b2c898469dfc388f619c6c972a28466cbb1442eahttps://git.kernel.org/stable/c/be95cc6d71dfd0cba66e3621c65413321b398052