CVE-2022-49361

Kernel panic via conflicting F2FS inode flags

Published Feb 26, 2025 · Updated Aug 15, 2026

Denial of service in the Linux kernel's F2FS allows attackers to trigger a kernel panic by renaming a file with a malformed inode. The F2FS eviction path converts inline data when an inode incorrectly carries both inline-data and encryption flags, polluting the page cache before clear_inode() hits a kernel BUG. Reachability requires the kernel to process that conflicting on-disk inode state and delete the inode through rename; the resulting panic interrupts the host.

CVSS severityUnavailable
Unscored
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 the Linux kernel's F2FS allows attackers to trigger a kernel panic by renaming a file with a malformed inode. The F2FS eviction path converts inline data when an inode incorrectly carries both inline-data and encryption flags, polluting the page cache before clear_inode() hits a kernel BUG. Reachability requires the kernel to process that conflicting on-disk inode state and delete the inode through rename; the resulting panic interrupts the host.

The record

CVE
CVE-2022-49361
Published
Feb 26, 2025
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

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

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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=4.2
  2. Affected versionversion=fcc85a4d86b5018f08717160c89c0eb50afd1dca <11c1cd032df85df3c096a57a7f27d57819956e4a
  3. Affected versionversion=fcc85a4d86b5018f08717160c89c0eb50afd1dca <198fd9faa271dd54dca6fc8eb6873f42dfd3b4d8
  4. Affected versionversion=fcc85a4d86b5018f08717160c89c0eb50afd1dca <677a82b44ebf263d4f9a0cfbd576a6ade797a07b
  5. Affected versionversion=fcc85a4d86b5018f08717160c89c0eb50afd1dca <7cfe2d43becaf76e562b9617d2c2d9b445f86761
  6. Affected versionversion=fcc85a4d86b5018f08717160c89c0eb50afd1dca <efdefbe8b7564602ab446474788225a1f2a323b5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=fcc85a4d86b5018f08717160c89c0eb50afd1dca <11c1cd032df85df3c096a57a7f27d57819956e4a; version=fcc85a4d86b5018f08717160c89c0eb50afd1dca <198fd9faa271dd54dca6fc8eb6873f42dfd3b4d8; version=fcc85a4d86b5018f08717160c89c0eb50afd1dca <677a82b44ebf263d4f9a0cfbd576a6ade797a07b; version=fcc85a4d86b5018f08717160c89c0eb50afd1dca <7cfe2d43becaf76e562b9617d2c2d9b445f86761; version=fcc85a4d86b5018f08717160c89c0eb50afd1dca <efdefbe8b7564602ab446474788225a1f2a323b5

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
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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