PT-2021-8049 · Linux+4 · Linux Kernel+4

Dan Carpenter · Published 2021-11-17 · Updated 2024-08-21 · CVE-2021-47571

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 vulnerability in the rtl92e pci disconnect() function. This vulnerability may allow an attacker to impact the confidentiality, integrity, and availability of protected information. The free rtllib() function frees the dev pointer, resulting in a use-after-free on the next line.

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:2024-04570

CVE-2021-47571

OESA-2024-1736

OPENSUSE-SU-2024_2362-1

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

SUSE-SU-2024:2360-1

SUSE-SU-2024:2362-1

SUSE-SU-2024:2365-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2381-1

SUSE-SU-2024:2384-1

SUSE-SU-2024:2385-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2495-1

SUSE-SU-2024:2561-1

SUSE-SU-2024:2939-1

USN-6976-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

Ubuntu

References · 1459

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/vmwgfx_fd_priv_esc.rb · Exploit
• https://osv.dev/vulnerability/CVE-2021-47571 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52875 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47474 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47571 · Vendor Advisory
• https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47281 · Security Note
• https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443 · Patch
• https://ubuntu.com/security/CVE-2024-36901 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-52644 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47171 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-36934 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47571 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-27014 · Security Note
• https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594 · Patch