CVE-2024-49891 Information

Description

In the Linux kernel the following vulnerability has been resolved:

scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths

When the HBA is undergoing a reset or is handling an errata event NULL ptr dereference crashes may occur in routines such as lpfc_sli_flush_io_rings() lpfc_dev_loss_tmo_callbk() or lpfc_abort_handler().

Add NULL ptr checks before dereferencing hdwq pointers that may have been freed due to operations colliding with a reset or errata event handler.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://git.kernel.org/stable/c/99a801e2fca39a6f31e543fc3383058a8955896f https://git.kernel.org/stable/c/fd665c8dbdb19548965b0ae80c490de00e906366 https://git.kernel.org/stable/c/2be1d4f11944cd6283cb97268b3e17c4424945ca

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5