CVE-2022-50873

Kernel crash via wrong pointer free

Published Dec 30, 2025 · Updated Dec 30, 2025

Invalid free in Linux 5.19 through 6.0.18 and 6.1 through 6.1.4 allows local users to crash the kernel during vp_vdpa removal. The vp_vdpa_remove function passes the address of the id_table pointer to kfree instead of the allocated table pointer, corrupting kernel memory. Low-privileged local access and a configured virtio-pci vDPA management device are required; exploitation causes an Oops and system-wide service interruption.

CVSS severity5.5
Medium
EPSS probability0.19%
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

Invalid free in Linux 5.19 through 6.0.18 and 6.1 through 6.1.4 allows local users to crash the kernel during vp_vdpa removal. The vp_vdpa_remove function passes the address of the id_table pointer to kfree instead of the allocated table pointer, corrupting kernel memory. Low-privileged local access and a configured virtio-pci vDPA management device are required; exploitation causes an Oops and system-wide service interruption.

The record

CVE
CVE-2022-50873
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=5.19
  2. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <6ccc891f36d0c20ee220551caabdcd3886ec584b
  3. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <8fe12680b2c731201519935013ec9219c93ec540
  4. Affected versionversion=ffbda8e9df10d1784d5427ec199e7d8308e3763f <ed843d6ed7310a27cf7c8ee0a82a482eed0cb4a6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <6ccc891f36d0c20ee220551caabdcd3886ec584b; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <8fe12680b2c731201519935013ec9219c93ec540; version=ffbda8e9df10d1784d5427ec199e7d8308e3763f <ed843d6ed7310a27cf7c8ee0a82a482eed0cb4a6

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

T1499.004Application or System Exploitation

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