CVE-2024-50216Public exploit

Local service interruption via uninitialized XFS fallback

Published Nov 9, 2024 · Updated May 11, 2026

An XFS flaw in Linux 6.3 and later allows local users to interrupt service by forcing filestream allocation into its fallback path. The xfs_filestream_pick_ag fallback uses args->pag as its iterator while leaving the separate pag value expected by later code uninitialized. Exploitation requires local access and an XFS workload that exhausts suitable allocation-group choices; the demonstrated outcome is a kernel null-pointer write.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An XFS flaw in Linux 6.3 and later allows local users to interrupt service by forcing filestream allocation into its fallback path. The xfs_filestream_pick_ag fallback uses args->pag as its iterator while leaving the separate pag value expected by later code uninitialized. Exploitation requires local access and an XFS workload that exhausts suitable allocation-group choices; the demonstrated outcome is a kernel null-pointer write.

The record

CVE
CVE-2024-50216
Published
Nov 9, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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=6.3
  2. Affected versionversion=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <77ddc732416b017180893cbb2356e9f0a414c575
  3. Affected versionversion=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <a023408925acd64db5c8980373fcb3e28ec6fd29
  4. Affected versionversion=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <dc60992ce76fbc2f71c2674f435ff6bde2108028

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <77ddc732416b017180893cbb2356e9f0a414c575; version=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <a023408925acd64db5c8980373fcb3e28ec6fd29; version=f8f1ed1ab3babad46b25e2dbe8de43b33fe7aaa6 <dc60992ce76fbc2f71c2674f435ff6bde2108028

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 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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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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