PT-2023-8734 · Linux+3 · Linux Kernel+3

Mike Rappoport · Published 2023-09-18 · Updated 2026-05-26 · CVE-2023-52576

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 Linux kernel, specifically in the ima free kexec buffer() function. This function runs after the memblock allocator has been torn down, potentially resulting in a use-after-free in memblock isolate range(). With KASAN or KFENCE, this use-after-free will result in a BUG from the idle task and a subsequent kernel panic. The vulnerability can be exploited by a remote attacker to cause a denial of service.

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

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2024-01766

CVE-2023-52576

OPENSUSE-SU-2024_1321-1

OPENSUSE-SU-2024_1322-1

OPENSUSE-SU-2024_1322-2

OPENSUSE-SU-2024_1332-1

OPENSUSE-SU-2024_1332-2

OPENSUSE-SU-2024_1466-1

OPENSUSE-SU-2024_1480-1

OPENSUSE-SU-2024_1490-1

SUSE-SU-2024:1320-1

SUSE-SU-2024:1321-1

SUSE-SU-2024:1466-1

SUSE-SU-2024:1480-1

SUSE-SU-2024:1490-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 473

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52576.json · Exploit
• https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b · Patch
• https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204 · Patch
• https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1490-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1320-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-01766 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-52576 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1480-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-52576 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-52576 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1321-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-52576 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52576 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1466-1 · Vendor Advisory