PT-2022-7632 · Linux+3 · Linux Kernel+3

Linus Torvalds · Published 2022-02-19 · Updated 2026-03-14 · CVE-2022-48944

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.15.26/5.16.12

Description The issue is related to a race condition in the sched fork() function, which can be exploited to gain elevated privileges on vulnerable systems. This occurs because a task is not placed on the runqueue before it gets exposed through the pidhash, allowing for a race vs syscalls. The commits 4ef0c5c6b5ba and 13765de8148f are related to fixing this issue, with the latter trying to fix a single instance of the problem but instead fixing the whole class of issues.

Recommendations To resolve the issue, upgrade the affected Linux kernel versions to 5.15.26/5.16.12 or later. As a temporary workaround, consider restricting access to the vulnerable sched fork() function until a patch is available.

Exploit

Fix

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

BDU:2024-07477

CVE-2022-48944

OPENSUSE-SU-2024_3547-1

OPENSUSE-SU-2024_3587-1

OPENSUSE-SU-2024_3592-1

SUSE-SU-2024:3547-1

SUSE-SU-2024:3563-1

SUSE-SU-2024:3569-1

SUSE-SU-2024:3587-1

SUSE-SU-2024:3592-1

Affected Products

Debian

Linux Kernel

Red Os

Suse

References · 361

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48944.json · Exploit
• https://git.kernel.org/stable/c/c65cfd89cef669d90c59f3bf150af6458137a04f · Patch
• https://git.kernel.org/stable/c/3411613611a5cddf7e80908010dc87cb527dd13b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-48944 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:3592-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-48944 · Vendor Advisory
• https://git.kernel.org/stable/c/b1e8206582f9d680cff7d04828708c8b6ab32957 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:3563-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48944 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-48944 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:3569-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-48944 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:3547-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-48944 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:3587-1 · Vendor Advisory