CVE-2024-50192

Service interruption via dying VPE affinity race

Published Nov 8, 2024 · Updated May 11, 2026

A race condition in Linux kernel GICv4 VPE handling allows local users to interrupt service by changing affinity after unmapping. The VMOVP path accepts an affinity change without checking that vmapp_count marks the VPE as unmapped, while its doorbell remains visible in /proc/irq/. Reachability requires local low-privileged access, GICv4 virtual interrupt support, and winning the narrow unmap-affinity race; the reported consequence is loss of availability.

CVSS severity4.7
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in Linux kernel GICv4 VPE handling allows local users to interrupt service by changing affinity after unmapping. The VMOVP path accepts an affinity change without checking that vmapp_count marks the VPE as unmapped, while its doorbell remains visible in /proc/irq/. Reachability requires local low-privileged access, GICv4 virtual interrupt support, and winning the narrow unmap-affinity race; the reported consequence is loss of availability.

The record

CVE
CVE-2024-50192
Published
Nov 8, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 2024CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=5.6
  2. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <01282ab5182f85e42234df2ff42f0ce790f465ff
  3. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <1442ee0011983f0c5c4b92380e6853afb513841a
  4. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <64b12b061c5488e2d69e67c4eaae5da64fd30bfe
  5. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <755b9532c885b8761fb135fedcd705e21e61cccb
  6. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <b7d7b7fc876f836f40bf48a87e07ea18756ba196
  7. Affected versionversion=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <d960505a869e66184fff97fb334980a5b797c7c6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <01282ab5182f85e42234df2ff42f0ce790f465ff; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <1442ee0011983f0c5c4b92380e6853afb513841a; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <64b12b061c5488e2d69e67c4eaae5da64fd30bfe; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <755b9532c885b8761fb135fedcd705e21e61cccb; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <b7d7b7fc876f836f40bf48a87e07ea18756ba196; version=64edfaa9a2342a3ce34f8cb982c2c2df84db4de3 <d960505a869e66184fff97fb334980a5b797c7c6

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7NIST NVDCVSS:3.1/AV:L/AC:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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

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Your stack

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