PT-2024-8452 · Linux+2 · Linux Kernel+2

Feng Tang · Published 2022-09-19 · Updated 2025-01-10 · CVE-2022-48649

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/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 The issue is related to a use-after-free error in the kobject del function, which can be caused by a double free of kmem cache. This error occurs when the slub debug test is run with the kfence 'test memcache typesafe by rcu' kunit test case. The cause of the issue is inside the kmem cache destroy function, where the scheduled work can run before the next RCU flag checking, leading to a wrong value and double kmem cache release. The fix involves caching the RCU flag inside a protected area.

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

Exploit

Use After Free

Double Free

Weakness Enumeration

CWE-416

CWE-415

Related Identifiers

BDU:2024-10012

CVE-2022-48649

Affected Products

Astra Linux

Linux Kernel

Red Os

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48649.json · Exploit
• https://bdu.fstec.ru/vul/2024-10012 · Security Note
• https://git.kernel.org/stable/c/d71608a877362becdc94191f190902fac1e64d35 · Patch
• https://cve.org/CVERecord?id=CVE-2022-48649 · Security Note
• https://git.kernel.org/stable/c/c673c6ceac53fb2e631c9fbbd79957099a08927f · Patch
• https://ubuntu.com/security/CVE-2022-48649 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-48649 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-48649 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48649 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48649 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48649 · Security Note
• https://redos.red-soft.ru/support/secure · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-051124 · Note
• https://access.redhat.com/security/cve/CVE-2022-48649 · Note
• https://lore.kernel.org/linux-cve-announce/2024042858-CVE-2022-48649-82c3@gregkh · Note