PT-2023-6285 · Linux+1 · Linux Kernel+1

Yikebaer Aizezi · Published 2023-08-04 · Updated 2024-11-21 · CVE-2023-40791

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.4.12

Description The issue is related to the incorrect use of the memory management system interface in the Linux kernel's scatterlist library. This can potentially allow an attacker to impact the integrity and availability of protected information. The extract user to sg function in lib/scatterlist.c fails to unpin pages in a certain situation, which can lead to problems.

Recommendations For Linux kernel versions prior to 6.4.12, update to version 6.4.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the extract user to sg function in lib/scatterlist.c to minimize the risk of exploitation.

Exploit

Fix

Weakness Enumeration

CWE-762

Related Identifiers

ALT-PU-2024-14046

ALT-PU-2024-6818

AZL-31564

BDU:2023-06996

CVE-2023-40791

Affected Products

Alt Linux

Linux Kernel

References · 19

• 🔥 https://lkml.org/lkml/2023/8/3/323 · Exploit
• https://lore.kernel.org/linux-crypto/20571.1690369076%40warthog.procyon.org.uk · Patch
• https://osv.dev/vulnerability/AZL-31564 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-40791 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-40791 · Security Note
• https://bdu.fstec.ru/vul/2023-06996 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-40791 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f · Patch
• https://osv.dev/vulnerability/CVE-2023-40791 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-40791 · Security Note
• https://ubuntu.com/security/CVE-2023-40791 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-40791 · Vendor Advisory
• https://git.kernel.org/linus/f443fd5af5dbd531f880d3645d5dd36976cf087f · Note
• https://lore.kernel.org/linux-crypto/[e-mail] · Note
• https://security.netapp.com/advisory/ntap-20231110-0009 · Note