CVE-2024-41009

Kernel memory corruption via overlapping ring-buffer reservations

Published Jul 17, 2024 · Updated Aug 5, 2026

Out-of-bounds write in the Linux kernel BPF ring buffer from 5.8 allows local users to corrupt kernel memory through overlapping reservations. A writable consumer_pos can bypass the capacity check, causing a second reservation to overlap and alter the first record header used by bpf_ringbuf_commit(). Reachability requires unprivileged BPF to be enabled or delegated BPF capability; exploitation can disclose or corrupt kernel memory and crash the system.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux kernel BPF ring buffer from 5.8 allows local users to corrupt kernel memory through overlapping reservations. A writable consumer_pos can bypass the capacity check, causing a second reservation to overlap and alter the first record header used by bpf_ringbuf_commit(). Reachability requires unprivileged BPF to be enabled or delegated BPF capability; exploitation can disclose or corrupt kernel memory and crash the system.

The record

CVE
CVE-2024-41009
Published
Jul 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 17, 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=457f44363a8894135c85b7a9afd2bd8196db24ab <0f98f40eb1ed52af8b81f61901b6c0289ff59de4
  2. Affected versionversion=457f44363a8894135c85b7a9afd2bd8196db24ab <47416c852f2a04d348ea66ee451cbdcf8119f225
  3. Affected versionversion=457f44363a8894135c85b7a9afd2bd8196db24ab <511804ab701c0503b72eac08217eabfd366ba069
  4. Affected versionversion=457f44363a8894135c85b7a9afd2bd8196db24ab <be35504b959f2749bab280f4671e8df96dcf836f
  5. Affected versionversion=457f44363a8894135c85b7a9afd2bd8196db24ab <cfa1a2329a691ffd991fcf7248a57d752e712881
  6. Affected versionversion=457f44363a8894135c85b7a9afd2bd8196db24ab <d1b9df0435bc61e0b44f578846516df8ef476686
  7. Affected versionversion=5.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=457f44363a8894135c85b7a9afd2bd8196db24ab <0f98f40eb1ed52af8b81f61901b6c0289ff59de4; version=457f44363a8894135c85b7a9afd2bd8196db24ab <47416c852f2a04d348ea66ee451cbdcf8119f225; version=457f44363a8894135c85b7a9afd2bd8196db24ab <511804ab701c0503b72eac08217eabfd366ba069; version=457f44363a8894135c85b7a9afd2bd8196db24ab <be35504b959f2749bab280f4671e8df96dcf836f; version=457f44363a8894135c85b7a9afd2bd8196db24ab <cfa1a2329a691ffd991fcf7248a57d752e712881; version=457f44363a8894135c85b7a9afd2bd8196db24ab <d1b9df0435bc61e0b44f578846516df8ef476686; version=5.8

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

T1068Exploitation for Privilege Escalation

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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