PT-2023-9433 · Linux+2 · Linux Kernel+2

Liam R. Howlett · Published 2023-01-11 · Updated 2025-09-29 · CVE-2023-52902

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 memory leak in the nommu component of the Linux kernel, specifically in the do mmap() error path. The preallocation of the maple tree nodes may leak if the error path to "error just free" is taken. This can be fixed by moving the freeing of the maple tree nodes to a shared location for all error paths. The exploitation of this issue may allow an 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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2024-07478

CVE-2023-52902

INFSA-2024_9315

RHSA-2024:9315

RHSA-2024_9315

Affected Products

Linux Kernel

Red Hat

Red Os

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52902.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-52902 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52902 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-52902 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-07478 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-52902 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-52902 · Vendor Advisory
• https://git.kernel.org/stable/c/7f31cced5724e6d414fe750aa1cd7e7b578ec22f · Patch
• https://cve.org/CVERecord?id=CVE-2023-52902 · Security Note
• https://git.kernel.org/stable/c/1442d51026c58e7c11dd5f9b19650632a48676d4 · Patch
• https://ubuntu.com/security/CVE-2023-52902 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-52902 · Vendor Advisory
• https://git.kernel.org/linus/7f31cced5724e6d414fe750aa1cd7e7b578ec22f · Note
• https://twitter.com/CVEnew/status/1826142253959545126 · Twitter Post
• https://lore.kernel.org/linux-cve-announce/2024082113-CVE-2023-52902-d3fa@gregkh · Note