CVE-2024-50252

Local service interruption via mlxsw IPv6 address leak

Published Nov 9, 2024 · Updated May 11, 2026

Memory leak in Linux mlxsw spectrum_ipip allows local users to exhaust kernel memory by changing an ip6gre remote IPv6 address. On a Spectrum-backed tunnel change, the driver neither inserts the new address into its hash table nor removes the old address from hardware-managed linear memory. Reaching the flaw requires local privilege to reconfigure an ip6gre net device on mlxsw Spectrum hardware; repeated changes consume kernel memory and can interrupt service.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Linux mlxsw spectrum_ipip allows local users to exhaust kernel memory by changing an ip6gre remote IPv6 address. On a Spectrum-backed tunnel change, the driver neither inserts the new address into its hash table nor removes the old address from hardware-managed linear memory. Reaching the flaw requires local privilege to reconfigure an ip6gre net device on mlxsw Spectrum hardware; repeated changes consume kernel memory and can interrupt service.

The record

CVE
CVE-2024-50252
Published
Nov 9, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 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=5.17
  2. Affected versionversion=cf42911523e02026cb56d329e584ae5923e94ba1 <12ae97c531fcd3bfd774d4dfeaeac23eafe24280
  3. Affected versionversion=cf42911523e02026cb56d329e584ae5923e94ba1 <31384aa2ad05c29c7745000f321154f42de24d1a
  4. Affected versionversion=cf42911523e02026cb56d329e584ae5923e94ba1 <c1bbdbe07f0bc3bc9f87efe4672d67208c6d6942
  5. Affected versionversion=cf42911523e02026cb56d329e584ae5923e94ba1 <d8f298eb6659eb6a38e26b79e77de4449dc6e61b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=cf42911523e02026cb56d329e584ae5923e94ba1 <12ae97c531fcd3bfd774d4dfeaeac23eafe24280; version=cf42911523e02026cb56d329e584ae5923e94ba1 <31384aa2ad05c29c7745000f321154f42de24d1a; version=cf42911523e02026cb56d329e584ae5923e94ba1 <c1bbdbe07f0bc3bc9f87efe4672d67208c6d6942; version=cf42911523e02026cb56d329e584ae5923e94ba1 <d8f298eb6659eb6a38e26b79e77de4449dc6e61b

Published CVSS scores

5.5NIST NVDCVSS: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 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-401Missing Release of Memory after Effective Lifetime
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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