PT-2024-8918 · Linux+3 · Linux Kernel+3

Igor Pylypiv · Published 2024-05-24 · Updated 2024-11-26 · CVE-2021-47503

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

AV:L/AC:L/PR:N/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 pm80xx component of the Linux kernel. This can cause a crash when scsi remove host() is called before scsi add host(). The function call tree shows that pm8001 pci probe() calls pm8001 pci alloc(), which in turn calls pm8001 alloc() and then scsi remove host(), before scsi add host() is called. This results in a kernel crash due to a NULL pointer dereference.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2024-10586

CVE-2021-47503

OPENSUSE-SU-2024_2185-1

OPENSUSE-SU-2024_2189-1

SUSE-SU-2024:2008-1

SUSE-SU-2024:2010-1

SUSE-SU-2024:2011-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2185-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1428

• 🔥 https://github.com/lanleft/CVE-2023-1829 · Exploit
• https://cve.org/CVERecord?id=CVE-2021-47503 · Security Note
• https://git.kernel.org/stable/c/1e434d2687e8bc0b3cdc9dd093c0e9047c0b4add · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47503 · Vendor Advisory
• https://git.kernel.org/stable/c/f8dccc1bdea7e21b5ec06c957aef8831c772661c · Patch
• https://osv.dev/vulnerability/CVE-2021-47503 · Vendor Advisory
• https://git.kernel.org/stable/c/653926205741add87a6cf452e21950eebc6ac10b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2010-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2011-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2019-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2190-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2185-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47503 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory