PT-2024-11479 · Linux+3 · Linux Kernel+3

Ilia Sergachev · Published 2021-11-15 · Updated 2024-08-19 · CVE-2021-47526

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/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 ->remove() function of the serial: liteuart driver. This occurs because drvdata is not set in the probe() function, causing platform get drvdata() to result in a null pointer dereference bug when remove() is called.

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:2025-14242

CVE-2021-47526

OPENSUSE-SU-2024_2189-1

SUSE-SU-2024:2008-1

SUSE-SU-2024:2011-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1246

• 🔥 https://github.com/lanleft/CVE-2023-1829 · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2024:2019-1 · Vendor Advisory
• https://git.kernel.org/stable/c/0f55f89d98c8b3e12b4f55f71c127a173e29557c · Patch
• https://git.kernel.org/stable/c/189c99c629bbf85916c02c153f904649cc0a9d7f · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2190-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47526 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47526 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47526 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47526 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-14242 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47526 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47526 · Security Note
• https://ubuntu.com/security/CVE-2021-47526 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2189-1 · Vendor Advisory