CVE-2024-42063

Service interruption via uninitialized eBPF stack key

Published Jul 29, 2024 · Updated May 11, 2026

Use of uninitialized memory in the Linux kernel allows local users to interrupt service through a crafted eBPF program. In interpreter mode, ___bpf_prog_run passes an uninitialized stack region as the void *key argument to map lookup or deletion helpers instead of marking the stack initialized. Access requires eBPF privileges, and published assessments limit the consequence to availability with no reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
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 the Linux kernel allows local users to interrupt service through a crafted eBPF program. In interpreter mode, ___bpf_prog_run passes an uninitialized stack region as the void *key argument to map lookup or deletion helpers instead of marking the stack initialized. Access requires eBPF privileges, and published assessments limit the consequence to availability with no reported data disclosure or modification.

The record

CVE
CVE-2024-42063
Published
Jul 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.15
  2. Affected versionversion=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <3189983c26108cf0990e5c46856dc9feb9470d12
  3. Affected versionversion=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <b30f3197a6cd080052d5d4973f9a6b479fd9fff5
  4. Affected versionversion=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <d812ae6e02bd6e6a9cd1fdb09519c2f33e875faf
  5. Affected versionversion=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <e8742081db7d01f980c6161ae1e8a1dbc1e30979

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.15; version=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <3189983c26108cf0990e5c46856dc9feb9470d12; version=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <b30f3197a6cd080052d5d4973f9a6b479fd9fff5; version=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <d812ae6e02bd6e6a9cd1fdb09519c2f33e875faf; version=bd4cf0ed331a275e9bf5a49e6d0fd55dffc551b8 <e8742081db7d01f980c6161ae1e8a1dbc1e30979

Published CVSS scores

5.5Amazon LinuxCVSS: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.

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
T1499.004Application 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

See the directory against your own environment.

Your stack

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