CVE-2024-50161

Local service interruption via unchecked BTF repetition

Published Nov 7, 2024 · Updated Aug 5, 2026

Improper array-index validation in the Linux kernel 6.11 allows local users to trigger an out-of-bounds access with nested BTF data. btf_repeat_fields multiplies a nested structure's field count by its element count and repeats entries without checking the remaining info_cnt capacity. Low-privileged access to the bpf system call is required; exceeding BTF_FIELDS_MAX reaches beyond the fixed field array and can interrupt service.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper array-index validation in the Linux kernel 6.11 allows local users to trigger an out-of-bounds access with nested BTF data. btf_repeat_fields multiplies a nested structure's field count by its element count and repeats entries without checking the remaining info_cnt capacity. Low-privileged access to the bpf system call is required; exceeding BTF_FIELDS_MAX reaches beyond the fixed field array and can interrupt service.

The record

CVE
CVE-2024-50161
Published
Nov 7, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 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=6.11
  2. Affected versionversion=64e8ee814819f21beeeda00d4119221443d77992 <6f957d972feee9b385ea3ae6530310a84e55ba71
  3. Affected versionversion=64e8ee814819f21beeeda00d4119221443d77992 <797d73ee232dd1833dec4824bc53a22032e97c1c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=64e8ee814819f21beeeda00d4119221443d77992 <6f957d972feee9b385ea3ae6530310a84e55ba71; version=64e8ee814819f21beeeda00d4119221443d77992 <797d73ee232dd1833dec4824bc53a22032e97c1c

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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-129Improper Validation of Array Index
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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