PT-2023-9425 · Linux+4 · Linux Kernel+4
Mathias Nyman
·
Publicado
2023-01-17
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Atualizado
2025-09-29
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CVE-2023-52898
CVSS v3.1
4.7
Média
| Vetor | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a null pointer dereference in the Linux kernel's xhci component. This occurs when the
xhci free dev() and xhci kill endpoint urbs() functions race and cause a null pointer dereference when the host suddenly dies. The USB core may call xhci free dev(), which frees the xhci->devs[slot id] virt device, at the same time that xhci kill endpoint urbs() tries to loop through all the device's endpoints, checking for any cancelled urbs left to give back. To fix this, the xhci spinlock is held while freeing the virt device.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Alt Linux
Astra Linux
Linux Kernel
Red Os
Suse