CVE-2022-50115

Kernel memory corruption via stale freed pointer

Published Jun 18, 2025 · Updated May 11, 2026

Double free in Linux kernel 5.18 through 5.19.1 allows local users to corrupt kernel memory through malformed SOF byte controls. The load_bytes error path frees scontrol->ipc_control_data after a byte-control sanity check fails but leaves the pointer non-NULL, so higher-level rollback frees it again. The path requires local low-privileged access and a failing SOF byte-control load; published evidence establishes memory corruption, not a specific post-corruption primitive.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Double free in Linux kernel 5.18 through 5.19.1 allows local users to corrupt kernel memory through malformed SOF byte controls. The load_bytes error path frees scontrol->ipc_control_data after a byte-control sanity check fails but leaves the pointer non-NULL, so higher-level rollback frees it again. The path requires local low-privileged access and a failing SOF byte-control load; published evidence establishes memory corruption, not a specific post-corruption primitive.

The record

CVE
CVE-2022-50115
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.18
  2. Affected versionversion=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <8463986b54295e6b65ddf2b7c65627d01ce7643b
  3. Affected versionversion=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <c2eddfcafcffaf1b9245ea0dde9143bbfb47d5d1
  4. Affected versionversion=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <d5bd47f3ca124058a8e87eae4508afeda2132611

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <8463986b54295e6b65ddf2b7c65627d01ce7643b; version=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <c2eddfcafcffaf1b9245ea0dde9143bbfb47d5d1; version=b5cee8feb1d482a9d07b677f4f2f9565bacda53e <d5bd47f3ca124058a8e87eae4508afeda2132611

Published CVSS scores

7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo