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 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 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c
- https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-45027
- https://nvd.nist.gov/vuln/detail/CVE-2024-45027
- https://launchpad.net/bugs/cve/CVE-2024-45027
- https://security-tracker.debian.org/tracker/CVE-2024-45027
- https://ubuntu.com/security/CVE-2024-45027
- https://git.kernel.org/linus/dcdb52d948f3a17ccd3fce757d9bd981d7c32039
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