CVE-2024-46843

MEDIUM

Linux Kernel - Use-After-Free in UFS SCSI Host Removal

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Remove SCSI host only if added If host tries to remove ufshcd driver from a UFS device it would cause a kernel panic if ufshcd_async_scan fails during ufshcd_probe_hba before adding a SCSI host with scsi_add_host and MCQ is enabled since SCSI host has been defered after MCQ configuration introduced by commit 0cab4023ec7b ("scsi: ufs: core: Defer adding host to SCSI if MCQ is supported"). To guarantee that SCSI host is removed only if it has been added, set the scsi_host_added flag to true after adding a SCSI host and check whether it is set or not before removing it.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/2f49e05d6b58d660f035a75ff96b77071b4bd5ed

Patch

https://git.kernel.org/stable/c/3844586e9bd9845140e1078f1e61896b576ac536

Patch

https://git.kernel.org/stable/c/7cbff570dbe8907e23bba06f6414899a0fbb2fcc

Scores

CVSS v3 5.5

EPSS 0.0024

EPSS Percentile 14.5%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (11)

linux/Kernel 6.3.0 - 6.6.51linux

linux/Kernel 6.7.0 - 6.10.10linux

Linux/Linux < 6.3

Linux/Linux 0cab4023ec7b49b18145f74ab8389678d6d58878 - 2f49e05d6b58d660f035a75ff96b77071b4bd5ed

Linux/Linux 0cab4023ec7b49b18145f74ab8389678d6d58878 - 3844586e9bd9845140e1078f1e61896b576ac536

Linux/Linux 0cab4023ec7b49b18145f74ab8389678d6d58878 - 7cbff570dbe8907e23bba06f6414899a0fbb2fcc

Linux/Linux 6.10.10 - 6.10.*

Linux/Linux 6.11

Linux/Linux 6.3

Linux/Linux 6.6.51 - 6.6.*

... and 1 more

Published Sep 27, 2024

Tracked Since Feb 18, 2026