# CVE-2024-45027: linux: In the Linux kernel, the following vulnerability has been resolved:  usb: xhci: Check for xhci->interrupters being al...

CVE-2024-45027 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-45027, released September 11, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-45027
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 11, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.10.7-1 | [DEBIAN-CVE-2024-45027](https://patchblox.com/security/data/fix/linux/debian-cve-2024-45027.md) | Sep 11, 2024 |
| Linux | linux Debian 14 | 6.10.7-1 | [DEBIAN-CVE-2024-45027](https://patchblox.com/security/data/fix/linux/debian-cve-2024-45027.md) | Sep 11, 2024 |

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