CVE-2025-68378

System crash via oversized BPF stack trace

Published Dec 24, 2025 · Updated Dec 24, 2025

Out-of-bounds write in the Linux kernel allows local users to crash the system through an oversized BPF perf stack trace. The __bpf_get_stackid() function copies a perf stack trace into a stack-map bucket without first limiting the copy to the bucket data-array capacity. Local low-privileged access is required; the demonstrated effect is kernel memory corruption affecting availability, with no reported data disclosure.

CVSS severity5.5
Medium
EPSS probability0.18%
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 allows local users to crash the system through an oversized BPF perf stack trace. The __bpf_get_stackid() function copies a perf stack trace into a stack-map bucket without first limiting the copy to the bucket data-array capacity. Local low-privileged access is required; the demonstrated effect is kernel memory corruption affecting availability, with no reported data disclosure.

The record

CVE
CVE-2025-68378
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=398ac11f4425d1e52aaf0d05d4fc90524e1a5b5e
  2. Affected versionversion=5.18
  3. Affected versionversion=6c4f243b58f5362e983386488b2d563764c567af
  4. Affected versionversion=90805175a206f784b6a77f16f07b07f6803e286b
  5. Affected versionversion=e750f78c4ed7cefbcefb9769b3b9e08033db39da
  6. Affected versionversion=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <23f852daa4bab4d579110e034e4d513f7d490846
  7. Affected versionversion=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <2a008f6de163279deffd488c1deab081bce5667c
  8. Affected versionversion=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <4669a8db976c8cbd5427fe9945f12c5fa5168ff3
  9. Affected versionversion=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <d1f424a77b6bd27b361737ed73df49a0158f1590

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=398ac11f4425d1e52aaf0d05d4fc90524e1a5b5e; version=5.18; version=6c4f243b58f5362e983386488b2d563764c567af; version=90805175a206f784b6a77f16f07b07f6803e286b; version=e750f78c4ed7cefbcefb9769b3b9e08033db39da; version=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <23f852daa4bab4d579110e034e4d513f7d490846; version=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <2a008f6de163279deffd488c1deab081bce5667c; version=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <4669a8db976c8cbd5427fe9945f12c5fa5168ff3; version=ee2a098851bfbe8bcdd964c0121f4246f00ff41e <d1f424a77b6bd27b361737ed73df49a0158f1590

Published CVSS scores

5.5OracleCVSS: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 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

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

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Your stack

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