PT-2024-11471 · Linux+6 · Linux Kernel+6

Published 2021-10-21 · Updated 2025-01-21 · CVE-2021-47495

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 sanity check for maxpacket in the usbnet component of the Linux kernel. A maxpacket value of 0 does not make sense and can cause errors because it is used as a divisor. The problem has been resolved by adding a sanity check.

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

Exploit

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

ALSA-2024:4211

ALSA-2024:4352

BDU:2025-14563

CESA-2024_4211

CESA-2024_4352

CVE-2021-47495

INFSA-2024_4211

INFSA-2024_4352

INFSA-2024_9315

OESA-2024-1692

OPENSUSE-SU-2024_2185-1

OPENSUSE-SU-2024_2189-1

RHSA-2024:4211

RHSA-2024:4352

RHSA-2024:9315

RHSA-2024_4211

RHSA-2024_4352

RHSA-2024_9315

RHSA-2025:8248

RLSA-2024:4211

RLSA-2024:4352

RXSA-2024:4211

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-2024:2183-1

SUSE-SU-2024:2184-1

SUSE-SU-2024:2185-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Almalinux

Astra Linux

Centos

Linux Kernel

Red Hat

Rocky Linux

Suse

References · 1795

• 🔥 https://github.com/lanleft/CVE-2023-1829 · Exploit
• 🔥❌ https://github.com/marcinguy/CVE-2020-10135-BIAS · Exploit, Deleted
• https://osv.dev/vulnerability/SUSE-SU-2024:1983-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47357 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47443 · Security Note
• https://linux.oracle.com/errata/ELSA-2024-12571.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-27020 · Security Note
• https://git.kernel.org/stable/c/b9eba0a4a527e04d712f0e0401e5391ef124b33e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-52693 · Security Note
• https://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-35960 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47405 · Security Note
• https://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448ed · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-52805 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47495 · Security Note