PT-2025-37609 · Linux+1 · Linux Kernel+1

Published 2022-10-26 · Updated 2025-09-20 · CVE-2022-50307

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The channel-subsystem-driver incorrectly assumes that an I/O-subchannel's drvdata points to a struct io subchannel private for devices bound to a non-default I/O subchannel driver, such as the vfio ccw driver. This results in an out-of-bounds read access during each scan when devices are removed from the cio ignore list using a command such as echo free >/proc/cio ignore. The fix relies on a driver-independent online indication using struct subchannel->config.ena, which represents the driver’s requested subchannel-enabled state.

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

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-03939

CVE-2022-50307

Affected Products

Astra Linux

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50307.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50307 · Vendor Advisory
• https://git.kernel.org/stable/c/1b6074112742f65ece71b0f299ca5a6a887d2db6 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50307 · Vendor Advisory
• https://git.kernel.org/stable/c/0e501fd0f38e42304bfa0d46a812d93f80294a87 · Patch
• https://osv.dev/vulnerability/CVE-2022-50307 · Vendor Advisory
• https://git.kernel.org/stable/c/106ab66cf5467726ca5ead51623043d37c06820a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50307 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-50307 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50307 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50307 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03939 · Security Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7 · Note
• https://access.redhat.com/security/cve/cve-2022-50307 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note