CVE-2024-53680

Kernel crash via uninitialized IPVS protocol buffer

Published Jan 11, 2025 · Updated May 11, 2026

Undefined behavior in Linux kernel IPVS allows local users to crash the kernel when the affected module initializes. The ip_vs_protocol_init() function passes an uninitialized 64-byte stack buffer to strnlen(); under affected Clang/LLVM and CONFIG_FORTIFY_SOURCE builds, optimization can remove its terminator and let execution fall through. Loading IPVS can cause a kernel oops, while kernels with IPVS built in can panic during boot, limiting the reported impact to service interruption.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Undefined behavior in Linux kernel IPVS allows local users to crash the kernel when the affected module initializes. The ip_vs_protocol_init() function passes an uninitialized 64-byte stack buffer to strnlen(); under affected Clang/LLVM and CONFIG_FORTIFY_SOURCE builds, optimization can remove its terminator and let execution fall through. Loading IPVS can cause a kernel oops, while kernels with IPVS built in can panic during boot, limiting the reported impact to service interruption.

The record

CVE
CVE-2024-53680
Published
Jan 11, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 11, 2025CVE 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

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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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b2cbed82b7c6504a8a0fbd181f92dd56b432c12
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <124834133b32f9386bb2d8581d9ab92f65e951e4
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <146b6f1112eb30a19776d6c323c994e9d67790db
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <31d1ddc1ce8e8d3f101a679243abb42a313ee88a
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <48130002e64fd191b7d18efeb4d253fcc23e4688
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <664d0feab92495b6a27edc3d1119e232c0fe8b2b
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6e1776f51c95827142f1d7064118e255e2deec1
  8. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b2cbed82b7c6504a8a0fbd181f92dd56b432c12; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <124834133b32f9386bb2d8581d9ab92f65e951e4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <146b6f1112eb30a19776d6c323c994e9d67790db; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <31d1ddc1ce8e8d3f101a679243abb42a313ee88a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <48130002e64fd191b7d18efeb4d253fcc23e4688; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <664d0feab92495b6a27edc3d1119e232c0fe8b2b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6e1776f51c95827142f1d7064118e255e2deec1; version=2.6.12

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource

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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