PT-2021-3876 · Linux+4 · Linux Kernel+4

Published 2021-06-18 · Updated 2023-05-17 · CVE-2021-38207

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.12.13

Description The issue is related to buffer overflow errors in the drivers/net/ethernet/xilinx/ll temac main.c component of the Linux kernel. It allows remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes.

Recommendations For Linux kernel versions prior to 5.12.13, update to version 5.12.13 or later to resolve the issue. As a temporary workaround, consider restricting heavy network traffic to minimize the risk of exploitation.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

ALT-PU-2021-2050

ALT-PU-2021-2199

ALT-PU-2021-2315

ALT-PU-2021-2326

ALT-PU-2021-2330

ALT-PU-2021-3481

ALT-PU-2022-1240

ALT-PU-2022-1419

ALT-PU-2022-1421

ALT-PU-2023-1814

AZL-6591

BDU:2021-04244

CVE-2021-38207

OESA-2021-1318

OPENSUSE-SU-2021:1271-1

OPENSUSE-SU-2021:3179-1

OPENSUSE-SU-2021:3205-1

OPENSUSE-SU-2021_1271-1

OPENSUSE-SU-2021_3179-1

OPENSUSE-SU-2021_3205-1

SUSE-SU-2021:3177-1

SUSE-SU-2021:3178-1

SUSE-SU-2021:3179-1

SUSE-SU-2021:3205-1

SUSE-SU-2021:3205-2

SUSE-SU-2021:3207-1

USN-5070-1

USN-5120-1

Affected Products

Alt Linux

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 227

• https://github.com/torvalds/linux/commit/c364df2489b8ef2f5e3159b1dff1ff1fdb16040d · Patch
• https://ubuntu.com/security/CVE-2021-40490 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5070-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-38199 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:3205-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5070-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-38209 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38207 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3179-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-34693 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3207-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:1271-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-38207 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5120-1 · Vendor Advisory