PT-2024-11468 · Linux+2 · Linux Kernel+2

Changhui Zhong + 1 · Published 2021-10-08 · Updated 2024-06-25 · CVE-2021-47480

Positive Technologies (AI Summary)

CVSS v2.0

5.9

Medium

Base vector

AV:L/AC:L/Au:M/C:C/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the SCSI host release mechanism in the Linux kernel. When a SCSI device is freed, the SCSI host release is triggered, and it is essential to ensure that the low-level device driver module is not unloaded before the SCSI host instance is released. This is because the shost->hostt is required in the release handler. The problem can lead to a kernel panic with the message 'BUG: unable to handle page fault for address'. The issue was reported by Changhui and Yi.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-14233

CVE-2021-47480

OPENSUSE-SU-2024_2185-1

OPENSUSE-SU-2024_2189-1

SUSE-SU-2024:1979-1

SUSE-SU-2024:1983-1

SUSE-SU-2024:2008-1

SUSE-SU-2024:2010-1

SUSE-SU-2024:2011-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2184-1

SUSE-SU-2024:2185-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1516

• https://osv.dev/vulnerability/SUSE-SU-2024:1983-1 · Vendor Advisory
• https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 · Patch
• https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f · Patch
• https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 · Patch
• https://ubuntu.com/security/CVE-2021-47480 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47480 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1979-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b · Patch
• https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 · Patch
• https://bdu.fstec.ru/vul/2025-14233 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47480 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2010-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 · Patch
• https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2011-1 · Vendor Advisory