CVE-2024-50033

Kernel memory disclosure and crash via short packets

Published Oct 21, 2024 · Updated Aug 5, 2026

Use of uninitialized memory in Linux SLIP in affected releases from 3.2 allows local users to disclose kernel memory or crash the system. The slhc_remember function accepts packets after checking only a 20-byte minimum, then reads IPv4 and TCP header fields that may lie beyond the supplied data. Exploitation requires low-privileged local access and a crafted packet reaching the enabled SLIP header-decompression path.

CVSS severity7.1
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in Linux SLIP in affected releases from 3.2 allows local users to disclose kernel memory or crash the system. The slhc_remember function accepts packets after checking only a 20-byte minimum, then reads IPv4 and TCP header fields that may lie beyond the supplied data. Exploitation requires low-privileged local access and a crafted packet reaching the enabled SLIP header-decompression path.

The record

CVE
CVE-2024-50033
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
Classifications
CWE-908, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=0 <V3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familyversion=0 <V3.2
Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=3.2; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <29e8d96d44f51cf89a62dd042be35d052833b95c; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <36b054324d18e51cf466134e13b6fbe3c91f52af; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <5e336384cc9b608e0551f99c3d87316ca3b0e51a; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <7d3fce8cbe3a70a1c7c06c9b53696be5d5d8dd5c; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <8bb79eb1db85a10865f0d4dd15b013def3f2d246; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <ba6501ea06462d6404d57d5644cf2854db38e7d7; version=b5451d783ade99308dfccdf5ca284ed07affa4ff <ff5e0f895315706e4ca5a19df15be6866cee4f5d
Siemens · SCALANCE XCM/XRM/XCH/XRH-300 familyversion=0 <V3.2
Siemens · RUGGEDCOM RST2428Pversion=0 <V3.2

Published CVSS scores

7.1NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-908Use of Uninitialized Resource
T1499Endpoint Denial of Service

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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