CVE-2024-57929

Kernel crash via cached released block pointer

Published Jan 19, 2025 · Updated Aug 5, 2026

Double release in the Linux kernel dm-array code allows local users to crash the kernel through corrupted device-mapper cache metadata. When dm_bm_read_lock fails, it releases the faulty block but leaves an invalid pointer that dm_array_cursor caches and releases again in dm_array_cursor_end. Triggering the BUG_ON requires write access to cache metadata on a backing block device and reactivation of the affected cache target.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double release in the Linux kernel dm-array code allows local users to crash the kernel through corrupted device-mapper cache metadata. When dm_bm_read_lock fails, it releases the faulty block but leaves an invalid pointer that dm_array_cursor caches and releases again in dm_array_cursor_end. Triggering the BUG_ON requires write access to cache metadata on a backing block device and reactivation of the affected cache target.

The record

CVE
CVE-2024-57929
Published
Jan 19, 2025
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-672, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=4.9; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <017c4470bff53585370028fec9341247bad358ff; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <6002bec5354f86d1a2df21468f68e3ec03ede9da; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <738994872d77e189b2d13c501a1d145e95d98f46; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <9c7c03d0e926762adf3a3a0ba86156fb5e19538b; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <e477021d252c007f0c6d45b5d13d341efed03979; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <f2893c0804d86230ffb8f1c8703fdbb18648abc8; version=fdd1315aa5f022fe6574efdc2d9535f75a0ee255 <fc1ef07c3522e257e32702954f265debbcb096a7

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

CWE-672Operation on a Resource after Expiration or Release
T1499.004Endpoint Denial of Service: Application 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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