CVE-2024-50257

Kernel memory corruption via unreferenced netfilter table

Published Nov 9, 2024 · Updated Aug 5, 2026

A use-after-free in Linux kernel netfilter 5.15 and later allows local users to corrupt kernel memory during concurrent module unload. The get_info() path can return an xt_table from xt_net->tables without acquiring its module reference after its template leaves xt_templates. Exploitation requires local low-privileged access and a race with privileged module removal; stale module_put() access permits kernel-memory read or write and can panic the host.

CVSS severity7.0
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A use-after-free in Linux kernel netfilter 5.15 and later allows local users to corrupt kernel memory during concurrent module unload. The get_info() path can return an xt_table from xt_net->tables without acquiring its module reference after its template leaves xt_templates. Exploitation requires local low-privileged access and a race with privileged module removal; stale module_put() access permits kernel-memory read or write and can panic the host.

The record

CVE
CVE-2024-50257
Published
Nov 9, 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 9, 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=5.15
  2. Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <6a1f088f9807f5166f58902d26246d0b88da03a8
  3. Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <ba22ea01348384df19cc1fabc7964be6e7189749
  4. Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <bab3bb35c03b263c486833d50d50c081d9e9832b
  5. Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <cb7c388b5967946f097afdb759b7c860305f2d96
  6. Affected versionversion=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <f48d258f0ac540f00fa617dac496c4c18b5dc2fa

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <6a1f088f9807f5166f58902d26246d0b88da03a8; version=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <ba22ea01348384df19cc1fabc7964be6e7189749; version=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <bab3bb35c03b263c486833d50d50c081d9e9832b; version=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <cb7c388b5967946f097afdb759b7c860305f2d96; version=fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 <f48d258f0ac540f00fa617dac496c4c18b5dc2fa

Published CVSS scores

7.8CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Linux kernel CVE teamCVSS:3.1/AV:L/AC:H/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 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-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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