CVE-2024-50244

Kernel crash via replay-time bitmap access

Published Nov 9, 2024 · Updated May 11, 2026

Uninitialized bitmap access in Linux NTFS3 5.15 and later affected branches allows local users to crash the kernel during log replay. In fs/ntfs3/frecord.c, ni_clear() calls ni_delete_all() for an unlinked in-use record without excluding NTFS_FLAGS_LOG_REPLAYING, so deletion reaches a bitmap before replay initializes it. Triggering the flaw requires low-privileged local access and an NTFS volume undergoing log replay; the documented consequence is a kernel crash, not data read or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized bitmap access in Linux NTFS3 5.15 and later affected branches allows local users to crash the kernel during log replay. In fs/ntfs3/frecord.c, ni_clear() calls ni_delete_all() for an unlinked in-use record without excluding NTFS_FLAGS_LOG_REPLAYING, so deletion reaches a bitmap before replay initializes it. Triggering the flaw requires low-privileged local access and an NTFS volume undergoing log replay; the documented consequence is a kernel crash, not data read or modification.

The record

CVE
CVE-2024-50244
Published
Nov 9, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 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=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <14a23e15a5e8331bb0cf21288723fa530a45b2a4
  2. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <60fb94ef46c2359dd06cbe30bfc2499f639433df
  3. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <7a4ace681dbb652aeb40e1b88f9134b880fdeeb5
  4. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <80824967ec714dda02cd79091aa186bbc16c5cf3
  5. Affected versionversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <d178944db36b3369b78a08ba520de109b89bf2a9
  6. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <14a23e15a5e8331bb0cf21288723fa530a45b2a4; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <60fb94ef46c2359dd06cbe30bfc2499f639433df; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <7a4ace681dbb652aeb40e1b88f9134b880fdeeb5; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <80824967ec714dda02cd79091aa186bbc16c5cf3; version=4534a70b7056fd4b9a1c6db5a4ce3c98546b291e <d178944db36b3369b78a08ba520de109b89bf2a9; version=5.15

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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
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.

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Technologies

Your stack

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Your stack

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