CVE-2024-53112

Kernel crash via stale buffer-head caching

Published Dec 2, 2024 · Updated May 11, 2026

Denial of service in Linux kernel OCFS2 allows local users to crash the kernel through repeated failed group-add ioctl requests. After ocfs2_verify_group_and_input() rejects OCFS2_IOC_GROUP_ADD, ocfs2_group_add() leaves the inode's buffer head cached, so a repeated request reaches BUG() while ocfs2_set_new_buffer_uptodate() tries to cache it again. Exploitation requires low-privilege local access to a system using OCFS2 and interrupts the host kernel without reported confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.25%
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 Linux kernel OCFS2 allows local users to crash the kernel through repeated failed group-add ioctl requests. After ocfs2_verify_group_and_input() rejects OCFS2_IOC_GROUP_ADD, ocfs2_group_add() leaves the inode's buffer head cached, so a repeated request reaches BUG() while ocfs2_set_new_buffer_uptodate() tries to cache it again. Exploitation requires low-privilege local access to a system using OCFS2 and interrupts the host kernel without reported confidentiality or integrity impact.

The record

CVE
CVE-2024-53112
Published
Dec 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 2, 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=2.6.25
  2. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <0e04746db2ec4aec04cef5763b9d9aa32829ae2f
  3. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <28d4ed71ae0b4baedca3e85ee6d8f227ec75ebf6
  4. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <5ae8cc0b0c027e9cab22596049bc4dd1cbc37ee4
  5. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <620d22598110b0d0cb97a3fcca65fc473ea86e73
  6. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <737f34137844d6572ab7d473c998c7f977ff30eb
  7. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <843dfc804af4b338ead42331dd58081b428ecdf8
  8. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <ac0cfe8ac35cf1be54131b90d114087b558777ca
  9. Affected versionversion=7909f2bf835376a20d6dbf853eb459a27566eba2 <b751c50e19d66cfb7360c0b55cf17b0722252d12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.25; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <0e04746db2ec4aec04cef5763b9d9aa32829ae2f; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <28d4ed71ae0b4baedca3e85ee6d8f227ec75ebf6; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <5ae8cc0b0c027e9cab22596049bc4dd1cbc37ee4; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <620d22598110b0d0cb97a3fcca65fc473ea86e73; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <737f34137844d6572ab7d473c998c7f977ff30eb; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <843dfc804af4b338ead42331dd58081b428ecdf8; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <ac0cfe8ac35cf1be54131b90d114087b558777ca; version=7909f2bf835376a20d6dbf853eb459a27566eba2 <b751c50e19d66cfb7360c0b55cf17b0722252d12

Published CVSS scores

5.5NISTCVSS: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

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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