PT-2023-9336 · Linux+1 · Linux Kernel+1

Published 2023-01-20 · Updated 2024-08-29 · CVE-2022-48874

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 race condition in the fastrpc map find function, which can lead to use-after-free. This occurs due to a race window between the point when the mutex is unlocked in fastrpc map lookup and the reference count increasing (fastrpc map get) in fastrpc map find. To resolve this, the fastrpc map find function is merged into fastrpc map lookup, allowing for the protection of the maps list by taking the &fl->lock spinlock and the reference count. The spinlock will be released only after the reference count has been increased.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2024-06643

CVE-2022-48874

Affected Products

Linux Kernel

Red Os

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48874.json · Exploit
• https://ubuntu.com/security/CVE-2022-48874 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-48874 · Vendor Advisory
• https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-48874 · Vendor Advisory
• https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498 · Patch
• https://cve.org/CVERecord?id=CVE-2022-48874 · Security Note
• https://bdu.fstec.ru/vul/2024-06643 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-48874 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48874 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48874 · Vendor Advisory
• https://redos.red-soft.ru/support/secure · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-29-08-24 · Note
• https://t.me/cvenotify/92633 · Telegram Post
• https://twitter.com/CVEnew/status/1826280545778565467 · Twitter Post