CVE-2024-42108

System crash via freed packet length access

Published Jul 30, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel rswitch driver 6.8 allows local users to crash the system through ordinary network traffic. In rswitch_tx_free(), the driver frees an skb and then reads skb->len from the same object to update interface statistics. Exploitation requires the Renesas rswitch driver and packet processing; ARP or ICMP echo traffic triggers repeated memory-safety faults and can interrupt the host.

CVSS severity6.8
Medium
EPSS probability0.63%
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 the Linux kernel rswitch driver 6.8 allows local users to crash the system through ordinary network traffic. In rswitch_tx_free(), the driver frees an skb and then reads skb->len from the same object to update interface statistics. Exploitation requires the Renesas rswitch driver and packet processing; ARP or ICMP echo traffic triggers repeated memory-safety faults and can interrupt the host.

The record

CVE
CVE-2024-42108
Published
Jul 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 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=0aeec4bb6a9fc963932bf3c929bdf27d835d44e9 <4a41bb9f2b402469d425a1c13359d3b3ea4e6403
  2. Affected versionversion=271e015b91535dd87fd0f5df0cc3b906c2eddef9 <92cbbe7759193e3418f38d0d73f8fe125312c58b
  3. Affected versionversion=271e015b91535dd87fd0f5df0cc3b906c2eddef9 <9a0c28efeec6383ef22e97437616b920e7320b67
  4. Affected versionversion=6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0aeec4bb6a9fc963932bf3c929bdf27d835d44e9 <4a41bb9f2b402469d425a1c13359d3b3ea4e6403; version=271e015b91535dd87fd0f5df0cc3b906c2eddef9 <92cbbe7759193e3418f38d0d73f8fe125312c58b; version=271e015b91535dd87fd0f5df0cc3b906c2eddef9 <9a0c28efeec6383ef22e97437616b920e7320b67; version=6.8

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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

T1499.004Endpoint Denial of Service: Application 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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