| |
Vulnerability CVE-2024-45027
Published: 2024-09-11
| Description: |
In the Linux kernel, the following vulnerability has been resolved:
usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
If xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop
up the damage. If it fails early enough, before xhci->interrupters
is allocated but after xhci->max_interrupters has been set, which
happens in most (all?) cases, things get uglier, as xhci_mem_cleanup()
unconditionally derefences xhci->interrupters. With prejudice.
Gate the interrupt freeing loop with a check on xhci->interrupters
being non-NULL.
Found while debugging a DMA allocation issue that led the XHCI driver
on this exact path. |
References: |
https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c
https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039
|
|
|
Copyright 2026, cxsecurity.com
|
|
|
