CVE-2024-50130

Kernel memory corruption via stale namespace reference

Published Nov 5, 2024 · Updated Aug 5, 2026

Use-after-free in Linux kernel netfilter BPF links allows local users to corrupt kernel memory during deferred link teardown. bpf_nf_link_attach stores link->net without taking a namespace reference, so deferred bpf_nf_link_release passes a freed namespace to __nf_unregister_net_hook. Triggering the flaw requires local execution and delegated CAP_BPF and CAP_NET_ADMIN capabilities; reuse of the freed object can disclose or overwrite kernel memory and crash the host.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel netfilter BPF links allows local users to corrupt kernel memory during deferred link teardown. bpf_nf_link_attach stores link->net without taking a namespace reference, so deferred bpf_nf_link_release passes a freed namespace to __nf_unregister_net_hook. Triggering the flaw requires local execution and delegated CAP_BPF and CAP_NET_ADMIN capabilities; reuse of the freed object can disclose or overwrite kernel memory and crash the host.

The record

CVE
CVE-2024-50130
Published
Nov 5, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.4
  2. Affected versionversion=84601d6ee68ae820dec97450934797046d62db4b <1230fe7ad3974f7bf6c78901473e039b34d4fb1f
  3. Affected versionversion=84601d6ee68ae820dec97450934797046d62db4b <d0d7939543a1b3bb93af9a18d258a774daf8f162
  4. Affected versionversion=84601d6ee68ae820dec97450934797046d62db4b <f41bd93b3e0508edc7ba820357f949071dcc0acc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.4; version=84601d6ee68ae820dec97450934797046d62db4b <1230fe7ad3974f7bf6c78901473e039b34d4fb1f; version=84601d6ee68ae820dec97450934797046d62db4b <d0d7939543a1b3bb93af9a18d258a774daf8f162; version=84601d6ee68ae820dec97450934797046d62db4b <f41bd93b3e0508edc7ba820357f949071dcc0acc

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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.

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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

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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