CVE-2022-49364Public exploit

Kernel crash via invalidated F2FS NAT entry

Published Feb 26, 2025 · Updated Aug 15, 2026

Denial of service in affected Linux versions before 5.19 allows local users to crash the kernel while evicting an inode from a malformed F2FS image. In f2fs_evict_inode(), truncating a dnode that shares the inode node identifier invalidates the NAT entry, so later inode-node truncation fails and leaves the inode dirty. Triggering the kernel BUG requires a crafted F2FS image and local ability to mount and unmount it; the demonstrated consequence is a host service interrupt.

CVSS severity5.5
Medium
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

Denial of service in affected Linux versions before 5.19 allows local users to crash the kernel while evicting an inode from a malformed F2FS image. In f2fs_evict_inode(), truncating a dnode that shares the inode node identifier invalidates the NAT entry, so later inode-node truncation fails and leaves the inode dirty. Triggering the kernel BUG requires a crafted F2FS image and local ability to mount and unmount it; the demonstrated consequence is a host service interrupt.

The record

CVE
CVE-2022-49364
Published
Feb 26, 2025
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.10
  2. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <03c9373b15fa1c245ec99b2b5e7ba209eae4ef42
  3. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <54c116615c99e22aa08aa950757ed726e2f60821
  4. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <c469953917b319d415fd621b9e5d0ea5203565cd
  5. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <c9196d21359be8c7ee231029d13682273925fd00
  6. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <ccd58045beb997544b94558a9156be4742628491
  7. Affected versionversion=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <f2db71053dc0409fae785096ad19cce4c8a95af7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <03c9373b15fa1c245ec99b2b5e7ba209eae4ef42; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <54c116615c99e22aa08aa950757ed726e2f60821; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <c469953917b319d415fd621b9e5d0ea5203565cd; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <c9196d21359be8c7ee231029d13682273925fd00; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <ccd58045beb997544b94558a9156be4742628491; version=a11b9f65eae766b17ec3451a6a1766f0a9d1dbff <f2db71053dc0409fae785096ad19cce4c8a95af7

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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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Technologies

Your stack

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Your stack

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