PT-2022-7376 · Linux+1 · Linux Kernel+1

Jianglei Nie · Published 2022-08-15 · Updated 2025-11-28 · CVE-2022-48670

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 versions up to 5.19.9

Description The issue is related to a use-after-free vulnerability in the adev release() function in the Linux kernel's Platform Environment Control Interface (PECI) driver. This vulnerability occurs when auxiliary device add() returns an error, causing auxiliary device uninit() to be called, which decrements the refcount for the device and triggers the .release callback. As adev release() re-calls auxiliary device uninit(), it leads to a use-after-free condition. The vulnerability may allow an attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations

• For Linux kernel versions up to 5.19.9, patch to the latest kernel version to resolve the issue.
• Identify affected systems and monitor for exploit attempts.
• As a temporary workaround, consider restricting access to the vulnerable adev release() function until a patch is available.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-42265

BDU:2024-04571

CVE-2022-48670

Affected Products

Linux Kernel

Red Os

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48670.json · Exploit
• https://ubuntu.com/security/CVE-2022-48670 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48670 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-48670 · Vendor Advisory
• https://git.kernel.org/stable/c/1c11289b34ab67ed080bbe0f1855c4938362d9cf · Patch
• https://osv.dev/vulnerability/CVE-2022-48670 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48670 · Vendor Advisory
• https://git.kernel.org/stable/c/c87f1f99e26ea4ae08cabe753ae98e5626bdba89 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48670 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-48670 · Security Note
• https://osv.dev/vulnerability/AZL-42265 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-04571 · Security Note
• https://twitter.com/oktsec/status/1786433763573948877 · Twitter Post
• https://twitter.com/CVEnew/status/1786444165762691413 · Twitter Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.10 · Note