CVE-2024-39488

Kernel panic via misaligned module bug table

Published Jul 10, 2024 · Updated May 11, 2026

Denial of service in affected arm64 Linux kernels allows local users to panic the system by loading a module containing a WARN. With CONFIG_DEBUG_BUGVERBOSE disabled, __BUG_ENTRY omits two trailing alignment bytes, so module_bug_finalize divides a six-byte section by the eight-byte struct size and excludes the last entry. Kernel-module-loading privileges and that configuration are required; when module_find_bug misses the final entry, the resulting unhandled BRK exception crashes the kernel.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected arm64 Linux kernels allows local users to panic the system by loading a module containing a WARN. With CONFIG_DEBUG_BUGVERBOSE disabled, __BUG_ENTRY omits two trailing alignment bytes, so module_bug_finalize divides a six-byte section by the eight-byte struct size and excludes the last entry. Kernel-module-loading privileges and that configuration are required; when module_find_bug misses the final entry, the resulting unhandled BRK exception crashes the kernel.

The record

CVE
CVE-2024-39488
Published
Jul 10, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 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

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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=4.3
  2. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <22469a0335a1a1a690349b58bcb55822457df81e
  3. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <3fd487ffaa697ddb05af78a75aaaddabe71c52b0
  4. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <461a760d578b2b2c2faac3040b6b7c77baf128f8
  5. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <9f2ad88f9b349554f64e4037ec185c84d7dd9c7d
  6. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <c1929c041a262a4a27265db8dce3619c92aa678c
  7. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <c27a2f7668e215c1ebbccd96fab27a220a93f1f7
  8. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <f221bd58db0f6ca087ac0392284f6bce21f4f8ea
  9. Affected versionversion=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <ffbf4fb9b5c12ff878a10ea17997147ea4ebea6f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.3; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <22469a0335a1a1a690349b58bcb55822457df81e; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <3fd487ffaa697ddb05af78a75aaaddabe71c52b0; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <461a760d578b2b2c2faac3040b6b7c77baf128f8; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <9f2ad88f9b349554f64e4037ec185c84d7dd9c7d; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <c1929c041a262a4a27265db8dce3619c92aa678c; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <c27a2f7668e215c1ebbccd96fab27a220a93f1f7; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <f221bd58db0f6ca087ac0392284f6bce21f4f8ea; version=9fb7410f955f7a62c1f882ca8f9ffd4525907e28 <ffbf4fb9b5c12ff878a10ea17997147ea4ebea6f

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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