CVE-2024-50304

Kernel warning via unrecognized RTNL protection

Published Nov 19, 2024 · Updated May 11, 2026

Locking validation in Linux 3.10 and later allows local users to trigger a kernel warning through IP tunnel control operations. In ip_tunnel_find(), hlist_for_each_entry_rcu() traverses the per-network-namespace tunnel table under the RTNL mutex without an expression informing lockdep that the mutex protects the traversal. Published evidence demonstrates a false-positive suspicious-RCU warning, not a resulting crash, data exposure, or privilege change.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Locking validation in Linux 3.10 and later allows local users to trigger a kernel warning through IP tunnel control operations. In ip_tunnel_find(), hlist_for_each_entry_rcu() traverses the per-network-namespace tunnel table under the RTNL mutex without an expression informing lockdep that the mutex protects the traversal. Published evidence demonstrates a false-positive suspicious-RCU warning, not a resulting crash, data exposure, or privilege change.

The record

CVE
CVE-2024-50304
Published
Nov 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 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=3.10
  2. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <31bd7378c6fe100a8af0e996ea0b5dafd3579df6
  3. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <6ac5dfa575136da8dd8a9e7c1437c41f3a593993
  4. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12
  5. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <ce11424026cbf87d5861b09e5e33565ff7f2ec8d
  6. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <e0500e4373cd3d5eace1f1712444ab830b82c114
  7. Affected versionversion=c54419321455631079c7d6e60bc732dd0c5914c5 <f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=c54419321455631079c7d6e60bc732dd0c5914c5 <31bd7378c6fe100a8af0e996ea0b5dafd3579df6; version=c54419321455631079c7d6e60bc732dd0c5914c5 <6ac5dfa575136da8dd8a9e7c1437c41f3a593993; version=c54419321455631079c7d6e60bc732dd0c5914c5 <90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12; version=c54419321455631079c7d6e60bc732dd0c5914c5 <ce11424026cbf87d5861b09e5e33565ff7f2ec8d; version=c54419321455631079c7d6e60bc732dd0c5914c5 <e0500e4373cd3d5eace1f1712444ab830b82c114; version=c54419321455631079c7d6e60bc732dd0c5914c5 <f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6

Published CVSS scores

5.5NVDCVSS: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.

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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

No sourced classifications are available.

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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