CVE-2024-27050

Local process corruption via unchecked option writes

Published May 1, 2024 · Updated Aug 5, 2026

Out-of-bounds write in Linux libbpf 6.6 through 6.8.1 allows local users to corrupt an affected process's stack via bpf_xdp_query(). The function unconditionally stores feature_flags and xdp_zc_max_segs beyond an older, smaller bpf_xdp_query_opts structure instead of honoring its size. An unprivileged local process must run a libbpf consumer built against the pre-6.6 structure; the deterministic four-byte overwrite can crash the process or corrupt adjacent state.

CVSS severity7.8
High
EPSS probability0.28%
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 Linux libbpf 6.6 through 6.8.1 allows local users to corrupt an affected process's stack via bpf_xdp_query(). The function unconditionally stores feature_flags and xdp_zc_max_segs beyond an older, smaller bpf_xdp_query_opts structure instead of honoring its size. An unprivileged local process must run a libbpf consumer built against the pre-6.6 structure; the deterministic four-byte overwrite can crash the process or corrupt adjacent state.

The record

CVE
CVE-2024-27050
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <682ddd62abd4bdcee7584246903e7a2df005fe0d
  2. Affected versionversion=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <92a871ab9fa59a74d013bc04f321026a057618e7
  3. Affected versionversion=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e
  4. Affected versionversion=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c
  5. Affected versionversion=6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <682ddd62abd4bdcee7584246903e7a2df005fe0d; version=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <92a871ab9fa59a74d013bc04f321026a057618e7; version=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e; version=13ce2daa259a3bfbc9a5aeeee8b9a87058703731 <fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c; version=6.6

Published CVSS scores

5.5UbuntuCVSS: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

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-787Out-of-bounds Write

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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