PT-2024-7331 · Linux+1 · Linux Kernel+1

David Hildenbrand + 1 · Published 2024-07-09 · Updated 2024-08-09 · CVE-2024-42233

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

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

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

Description: The issue is related to the function filemap fault recheck pte none() in the Linux kernel's memory management subsystem. It involves a race condition that may lead to the reuse of previously freed memory, potentially allowing an attacker to impact the integrity of protected information. The problem arises because the vmf->ptl is still set from handle pte fault(), but at the same time, pte unmap(vmf->pte) is performed, which can cause the page table to be changed, making vmf->ptl fail to protect the actual page table. This might trigger a Use After Free (UAF) condition.

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

Exploit

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

BDU:2024-08687

CVE-2024-42233

Affected Products

Astra Linux

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42233.json · Exploit
• https://bdu.fstec.ru/vul/2024-08687 · Security Note
• https://git.kernel.org/stable/c/24be02a42181f0707be0498045c4c4b13273b16d · Patch
• https://git.kernel.org/stable/c/6a6c2aec1a89506595801b4cf7e8eef035f33748 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-42233 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-42233 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-42233 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-42233 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-42233 · Security Note
• https://ubuntu.com/security/CVE-2024-42233 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-42233 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-42233 · Vendor Advisory
• https://t.me/cvedetector/2715 · Telegram Post
• https://docs.bell-sw.com/security/cves/CVE-2024-42233 · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.9.10 · Note