PT-2021-8236 · Linux+3 · Linux Kernel+3

Joe Thornber · Published 2021-11-24 · Updated 2024-12-09 · CVE-2021-47600

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description The issue is related to a use-after-free error in the rebalance children() function of the Linux kernel's dm component. This error can be exploited by an attacker to elevate privileges in the system. The fix involves moving dm tm unlock() after dm tm dec().

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2024-11561

CVE-2021-47600

OPENSUSE-SU-2024_2362-1

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

OPENSUSE-SU-2024_2948-1

SUSE-SU-2024:2360-1

SUSE-SU-2024:2362-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2381-1

SUSE-SU-2024:2384-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2561-1

SUSE-SU-2024:2895-1

SUSE-SU-2024:2902-1

SUSE-SU-2024:2923-1

SUSE-SU-2024:2929-1

SUSE-SU-2024:2939-1

SUSE-SU-2024:2948-1

SUSE-SU-2024:3767-1

SUSE-SU-2024:3768-1

SUSE-SU-2024:3782-1

SUSE-SU-2024:3794-1

SUSE-SU-2024:3796-1

SUSE-SU-2024:3800-1

SUSE-SU-2024:3803-1

SUSE-SU-2024:3848-1

SUSE-SU-2024:3849-1

SUSE-SU-2024:4231-1

SUSE-SU-2024:4242-1

SUSE-SU-2024:4248-1

SUSE-SU-2024:4250-1

SUSE-SU-2024:4263-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1472

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/vmwgfx_fd_priv_esc.rb · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2024:3848-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:3794-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1b8d2789dad0005fd5e7d35dab26a8e1203fb6da · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47600 · Vendor Advisory
• https://git.kernel.org/stable/c/501ecd90efdc9b2edc6c28852ecd098a4adf8f00 · Patch
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://git.kernel.org/stable/c/a48f6a2bf33734ec5669ee03067dfb6c5b4818d6 · Patch
• https://bdu.fstec.ru/vul/2024-11561 · Security Note
• https://ubuntu.com/security/CVE-2021-47600 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2948-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47600 · Security Note
• https://git.kernel.org/stable/c/66ea642af6fd4eacb5d0271a922130fcf8700424 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:3849-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2360-1 · Vendor Advisory