PT-2023-4717 · Linux+1 · Linux Kernel+1

Jann Horn · Published 2023-07-28 · Updated 2024-11-21 · CVE-2023-4611

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/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 A use-after-free flaw was found in the memory management subsystem of the Linux Kernel, specifically in mm/mempolicy.c. This issue is caused by a race between mbind() and VMA-locked page fault, which may allow a local attacker to crash the system or lead to a kernel information leak. The flaw is related to the do mbind() function and is caused by the reuse of previously freed memory due to concurrent access to a resource, resulting in a race condition.

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

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

ALT-PU-2023-5748

ALT-PU-2023-5787

ALT-PU-2023-7004

ALT-PU-2024-14046

ALT-PU-2024-6818

AZL-28546

BDU:2023-05143

CVE-2023-4611

Affected Products

Alt Linux

Linux Kernel

References · 20

• https://osv.dev/vulnerability/AZL-28546 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2227244 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-4611 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-4611 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-4611 · Security Note
• https://osv.dev/vulnerability/CVE-2023-4611 · Vendor Advisory
• https://spinics.net/lists/stable-commits/msg310136.html · Patch
• https://ubuntu.com/security/CVE-2023-4611 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-4611 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-05143 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-4611 · Vendor Advisory
• https://t.me/cibsecurity/69401 · Telegram Post
• https://xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.9 · Note
• https://t.me/cvenotify/57580 · Telegram Post
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.8 · Note