PT-2023-9335 · Linux+2 · Linux Kernel+2

David Wang · Publicado 2023-01-09 · Atualizado 2024-08-29 · CVE-2022-48892

Positive Technologies (AI Summary)

CVSS v3.1

7.8

Alta

Vetor base

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 bug in the dup user cpus ptr() function. This bug can be exploited when the sched setaffinity() function is invoked from another process while the process being modified is undergoing a fork operation. The bug can lead to a use-after-free and possibly a double-free in the arm64 kernel. The problem arises because dup user cpus ptr() accesses user cpus ptr without any lock protection, even though the setting and clearing of user cpus ptr are done under pi lock for the arm64 architecture.

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

Enumeração de Fraquezas

CWE-416

CWE-415

Identificadores relacionados

BDU:2024-06624

CVE-2022-48892

Produtos afetados

Astra Linux

Linux Kernel

Red Os

Referências · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48892.json · Exploit
• https://git.kernel.org/stable/c/7b5cc7fd1789ea5dbb942c9f8207b076d365badc · Correção
• https://t.me/cvenotify/92630 · Publicação no Telegram
• https://twitter.com/CVEnew/status/1826142272859107502 · Publicação no Twitter
• https://git.kernel.org/linus/87ca4f9efbd7cc649ff43b87970888f2812945b8 · Nota
• https://redos.red-soft.ru/support/secure · Nota
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-29-08-24 · Nota
• https://git.kernel.org/stable/c/87ca4f9efbd7cc649ff43b87970888f2812945b8 · Correção
• https://security-tracker.debian.org/tracker/CVE-2022-48892 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2022-48892 · Aviso do Fabricante
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=158612043 · Aviso do Fabricante
• https://git.kernel.org/stable/c/b22faa21b6230d5eccd233e1b7e0026a5002b287 · Correção
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Nota
• https://osv.dev/vulnerability/CVE-2022-48892 · Aviso do Fabricante
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48892 · Aviso do Fabricante