11/9/2024
29/9/2024
CVE-2024-45027: usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
First published: Wed Sep 11 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|
Linux Linux kernel | >=6.8<6.10.7 | |
Linux Linux kernel | =6.11-rc1 | |
Linux Linux kernel | =6.11-rc2 | |
Linux Linux kernel | =6.11-rc3 | |
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- version/linux linux kernel/6.11-rc2
- version/linux linux kernel/6.11-rc3
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