PT-2021-3403 · Linux+6 · Linux Kernel+6

Published 2021-02-10 · Updated 2024-09-04 · CVE-2021-3600

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

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

Description The eBPF implementation in the Linux kernel does not properly track bounds information for 32-bit registers when performing div and mod operations. This can allow a local attacker to possibly execute arbitrary code. The issue is caused by incorrect truncation of 32-bit registers during these operations, potentially leading to reading and writing data outside the allocated memory area.

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

Memory Corruption

RCE

Out of bounds Read

Weakness Enumeration

CWE-787

CWE-20

CWE-125

Related Identifiers

ALSA-2021:4356

BDU:2021-03254

CESA-2021_4140

CESA-2021_4356

CVE-2021-3600

DLA-2785-1

LSN-0079-1

OESA-2021-1279

RHSA-2021:4140

RHSA-2021:4356

RHSA-2021_4140

RHSA-2021_4356

USN-5003-1

Affected Products

Almalinux

Astra Linux

Centos

Linux Kernel

Red Hat

Red Os

Ubuntu

References · 100

• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23133 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3600 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33909 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-36387 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-35039 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-3600 · Vendor Advisory
• https://git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3600 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5003-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03254 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-3609 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-36385 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-22555 · Security Note
• https://osv.dev/vulnerability/DLA-2785-1 · Vendor Advisory