PT-2024-1521 · Linux+3 · Linux Kernel+3

Published 2024-01-30 · Updated 2026-03-14 · CVE-2024-21803

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 versions 2.6.12-rc2 through 6.8-rc1

Description The issue is related to a Use After Free vulnerability in the Linux kernel's bluetooth module, specifically in the net/bluetooth/af bluetooth.c driver. This vulnerability can be exploited to allow an attacker to execute arbitrary code locally. The vulnerability is associated with the program file https://gitee.Com/anolis/cloud-kernel/blob/devel-5.10/net/bluetooth/af bluetooth.C.

Recommendations For Linux kernel versions 2.6.12-rc2 through 6.8-rc1, update to a version after 6.8-rc1 to resolve the issue. As a temporary workaround, consider disabling the bluetooth module until a patch is available. Restrict access to the vulnerable af bluetooth.c driver to minimize the risk of exploitation.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2024-10855

ALT-PU-2024-6002

AZL-34203

AZL-34875

BDU:2024-01034

CVE-2024-21803

ECHO-AEBF-CD88-77B2

Affected Products

Alt Linux

Astra Linux

Debian

Linux Kernel

References · 26

• https://nvd.nist.gov/vuln/detail/CVE-2024-21803 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-21803 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-21803 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2024-0830SE17 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2024-21803 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2024-21803 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2024-21803 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-34875 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-34203 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-21803 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-21803 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-01034 · Security Note
• https://ubuntu.com/security/CVE-2024-21803 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-21803 · Vendor Advisory
• https://patchwork.kernel.org/project/bluetooth/patch/20231209105518.GA408904@v4bel-B760M-AORUS-ELITE-AX/#25630326 · Note