CVE-2024-47689Network attack vector

Filesystem hang via unlocked read-only flag update

Published Oct 21, 2024 · Updated May 23, 2026

Race condition in f2fs in affected Linux kernel builds allows attackers to hang filesystem freeze and teardown operations. f2fs_handle_critical_error sets SB_RDONLY without the sb->s_umount-protected remount path, so thaw_super skips the corresponding freeze unlock. Reachability requires an f2fs filesystem mounted with errors=remount-ro and overlap between a critical error and freeze or thaw processing.

CVSS severity5.3
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in f2fs in affected Linux kernel builds allows attackers to hang filesystem freeze and teardown operations. f2fs_handle_critical_error sets SB_RDONLY without the sb->s_umount-protected remount path, so thaw_super skips the corresponding freeze unlock. Reachability requires an f2fs filesystem mounted with errors=remount-ro and overlap between a critical error and freeze or thaw processing.

The record

CVE
CVE-2024-47689
Published
Oct 21, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.4 <6.5
  2. Affected versionversion=6.5
  3. Affected versionversion=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <1f63f405c1a1a64b9c310388aad7055fb86b245c
  4. Affected versionversion=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <649ec8b30df113042588bd3d3cd4e98bcb1091e0
  5. Affected versionversion=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <930c6ab93492c4b15436524e704950b364b2930c
  6. Affected versionversion=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <de43021c72993877a8f86f9fddfa0687609da5a4
  7. Affected versionversion=ed1d478bf838820201f3fb67a1748fdf15954ea4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.4.4 <6.5; version=6.5; version=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <1f63f405c1a1a64b9c310388aad7055fb86b245c; version=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <649ec8b30df113042588bd3d3cd4e98bcb1091e0; version=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <930c6ab93492c4b15436524e704950b364b2930c; version=b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5 <de43021c72993877a8f86f9fddfa0687609da5a4; version=ed1d478bf838820201f3fb67a1748fdf15954ea4

Published CVSS scores

5.3NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.3UbuntuCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7SUSECVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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