CVE-2024-50171

Service interruption via unreleased transmit buffers

Published Nov 7, 2024 · Updated May 11, 2026

Memory leakage in Linux kernel releases from 3.16 allows local users to interrupt service through Broadcom SYSTEMPORT packet transmission. In bcm_sysport_xmit(), the dma_map_single() failure path returns NETDEV_TX_OK without releasing the socket buffer, so repeated failures retain kernel memory. The Broadcom SYSTEMPORT driver and a DMA mapping failure must be present; accumulated unreleased buffers can exhaust memory and interrupt the host.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in Linux kernel releases from 3.16 allows local users to interrupt service through Broadcom SYSTEMPORT packet transmission. In bcm_sysport_xmit(), the dma_map_single() failure path returns NETDEV_TX_OK without releasing the socket buffer, so repeated failures retain kernel memory. The Broadcom SYSTEMPORT driver and a DMA mapping failure must be present; accumulated unreleased buffers can exhaust memory and interrupt the host.

The record

CVE
CVE-2024-50171
Published
Nov 7, 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 7, 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=3.16
  2. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <31701ef0c4547973991ff63596c927f841dfd133
  3. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <4b70478b984af3c9d0279c121df5ff94e2533dbd
  4. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <533d2f30aef272dade17870a509521c3afc38a03
  5. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <5febfc545389805ce83d37f9f4317055b26dd7d7
  6. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <7d5030a819c3589cf9948b1eee397b626ec590f5
  7. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <8e81ce7d0166a2249deb6d5e42f28a8b8c9ea72f
  8. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <b6321146773dcbbc372a54dbada67e0b50e0a25c
  9. Affected versionversion=80105befdb4b8cea924711b40b2462b87df65b62 <c401ed1c709948e57945485088413e1bb5e94bd1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.16; version=80105befdb4b8cea924711b40b2462b87df65b62 <31701ef0c4547973991ff63596c927f841dfd133; version=80105befdb4b8cea924711b40b2462b87df65b62 <4b70478b984af3c9d0279c121df5ff94e2533dbd; version=80105befdb4b8cea924711b40b2462b87df65b62 <533d2f30aef272dade17870a509521c3afc38a03; version=80105befdb4b8cea924711b40b2462b87df65b62 <5febfc545389805ce83d37f9f4317055b26dd7d7; version=80105befdb4b8cea924711b40b2462b87df65b62 <7d5030a819c3589cf9948b1eee397b626ec590f5; version=80105befdb4b8cea924711b40b2462b87df65b62 <8e81ce7d0166a2249deb6d5e42f28a8b8c9ea72f; version=80105befdb4b8cea924711b40b2462b87df65b62 <b6321146773dcbbc372a54dbada67e0b50e0a25c; version=80105befdb4b8cea924711b40b2462b87df65b62 <c401ed1c709948e57945485088413e1bb5e94bd1

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 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-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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