CVE-2024-49885

Kernel BUG report via zeroed redzone metadata

Published Oct 21, 2024 · Updated May 11, 2026

Memory corruption in the Linux kernel SLUB allocator allows local users to trigger a kernel BUG report during kmalloc object freeing. The free path clears object->size instead of orig_size, zeroing the redzone and saved orig_size so check_object() treats the entire object as a redzone. Reachability requires SLUB debugging with slub_debug=FUZ and init_on_free=1; the documented consequence is an allocator corruption report.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in the Linux kernel SLUB allocator allows local users to trigger a kernel BUG report during kmalloc object freeing. The free path clears object->size instead of orig_size, zeroing the redzone and saved orig_size so check_object() treats the entire object as a redzone. Reachability requires SLUB debugging with slub_debug=FUZ and init_on_free=1; the documented consequence is an allocator corruption report.

The record

CVE
CVE-2024-49885
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=6.2
  2. Affected versionversion=946fa0dbf2d8923a587f7348adf16563d59f1b3d <59090e479ac78ae18facd4c58eb332562a23020e
  3. Affected versionversion=946fa0dbf2d8923a587f7348adf16563d59f1b3d <7a2e823a19746d54052c625faecf0d2d6c52ee0a
  4. Affected versionversion=946fa0dbf2d8923a587f7348adf16563d59f1b3d <83f0440b2f92227fcce9898118ca7fe7e0d64b1f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=946fa0dbf2d8923a587f7348adf16563d59f1b3d <59090e479ac78ae18facd4c58eb332562a23020e; version=946fa0dbf2d8923a587f7348adf16563d59f1b3d <7a2e823a19746d54052c625faecf0d2d6c52ee0a; version=946fa0dbf2d8923a587f7348adf16563d59f1b3d <83f0440b2f92227fcce9898118ca7fe7e0d64b1f

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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

No sourced classifications are available.

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

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo