PT-2025-25990 · Linux+1 · Linux Kernel+1

Published 2022-08-11 · Updated 2025-06-18 · CVE-2022-50064

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 issue in the Linux kernel has been identified, specifically in the virtio-blk component. The issue occurs when the hctx->user data is set to vq in virtblk init hctx(), but vq is freed on suspend and reallocated on resume, resulting in hctx->user data becoming invalid after resume. This can cause a kernel crash. The issue is related to the virtqueue add split function and can be triggered by accessing the invalid hctx->user data.

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

Exploit

Use After Free

Buffer Overflow

Weakness Enumeration

CWE-416

CWE-119

Related Identifiers

BDU:2026-01639

CVE-2022-50064

RHSA-2023:6583

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50064.json · Exploit
• https://git.kernel.org/stable/c/8d12ec10292877751ee4463b11a63bd850bc09b5 · Patch
• https://git.kernel.org/stable/c/2b54e14535bc34bf649372060d518ec9f2b893b3 · Patch
• https://ubuntu.com/security/CVE-2022-50064 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50064 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50064 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50064 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50064 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01639 · Security Note
• https://osv.dev/vulnerability/CVE-2022-50064 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50064 · Security Note
• https://lore.kernel.org/linux-cve-announce/2025061850-CVE-2022-50064-70a7@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025061850-CVE-2022-50064-70a7@gregkh/T · Note
• https://twitter.com/CVEnew/status/1935356214897996121 · Twitter Post