CVE-2024-57941

File I/O hang via uncanceled cache request

Published Jan 21, 2025 · Updated May 11, 2026

Denial of service in Linux kernel 6.12 netfs allows local users to hang Ceph file I/O when FS-Cache is temporarily disabled. In netfs_advance_write(), an unavailable cache stream causes an early successful return without subrequests, so the request is discarded and folios retain PG_private_2. The hang requires local low-privileged access, a Ceph filesystem mounted with FS-Cache enabled, and a temporary cache disable such as a direct-I/O write.

CVSS severity5.5
Medium
EPSS probability0.17%
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 6.12 netfs allows local users to hang Ceph file I/O when FS-Cache is temporarily disabled. In netfs_advance_write(), an unavailable cache stream causes an early successful return without subrequests, so the request is discarded and folios retain PG_private_2. The hang requires local low-privileged access, a Ceph filesystem mounted with FS-Cache enabled, and a temporary cache disable such as a direct-I/O write.

The record

CVE
CVE-2024-57941
Published
Jan 21, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 21, 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=6.12
  2. Affected versionversion=ee4cdf7ba857a894ad1650d6ab77669cbbfa329e <ba37bdfe59fb43e80dd79290340a21864ba4b61e
  3. Affected versionversion=ee4cdf7ba857a894ad1650d6ab77669cbbfa329e <d0327c824338cdccad058723a31d038ecd553409

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=ee4cdf7ba857a894ad1650d6ab77669cbbfa329e <ba37bdfe59fb43e80dd79290340a21864ba4b61e; version=ee4cdf7ba857a894ad1650d6ab77669cbbfa329e <d0327c824338cdccad058723a31d038ecd553409

Published CVSS scores

5.5NIST NVDCVSS: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

T1499.004Application 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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