PT-2025-8584 · Linux+2 · Linux Kernel+2

Paul E. Mckenney + 1 · Published 2022-01-01 · Updated 2026-05-26 · CVE-2022-49651

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 A use-after-free bug in the Linux kernel has been identified. The issue arises from the cleanup srcu struct() function not checking for a grace period that has not yet started but might start at any time. This could result in a use-after-free bug. The commit adds a check for a grace period that is needed but not yet started to cleanup srcu struct().

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

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-58971

BDU:2025-04421

CVE-2022-49651

OESA-2025-1283

OESA-2025-1284

RHSA-2023:2458

RHSA-2023_2458

Affected Products

Debian

Linux Kernel

Red Hat

References · 39

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49651.json · Exploit
• https://git.kernel.org/stable/c/8ed00760203d8018bee042fbfe8e076579be2c2b · Patch
• https://git.kernel.org/stable/c/e997dda6502eefbc1032d6b0da7b353c53344b07 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49651 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49651 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49651 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21782 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21719 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-57947 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49651 · Security Note
• https://osv.dev/vulnerability/OESA-2025-1284 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49651 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49651 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49651 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-58009 · Security Note