CVE-2022-49282

Kernel panic via incorrect F2FS quota index

Published Feb 26, 2025 · Updated May 23, 2026

Denial of service in the Linux kernel's F2FS quota handling allows local users to trigger a kernel panic during quota synchronization. f2fs_quota_sync passes the quota type instead of the loop index to sb_has_quota_active, allowing a type value of -1 to bypass the active-quota check before inode_lock dereferences a null quota-file pointer. The path requires an F2FS filesystem with quota enabled; the demonstrated consequence is a kernel panic that stops the running system.

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 the Linux kernel's F2FS quota handling allows local users to trigger a kernel panic during quota synchronization. f2fs_quota_sync passes the quota type instead of the loop index to sb_has_quota_active, allowing a type value of -1 to bypass the active-quota check before inode_lock dereferences a null quota-file pointer. The path requires an F2FS filesystem with quota enabled; the demonstrated consequence is a kernel panic that stops the running system.

The record

CVE
CVE-2022-49282
Published
Feb 26, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE 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

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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=2d586a3f5b7ec2f5a939db4abc9aa053c237545c <e58ee6bd939b773675240f5d0f5b88a367c037c4
  2. Affected versionversion=5.10.67 <5.10.110
  3. Affected versionversion=5.13.19 <5.14
  4. Affected versionversion=5.14.6 <5.15
  5. Affected versionversion=5.15
  6. Affected versionversion=5.4.148 <5.4.189
  7. Affected versionversion=699a077aa087c17cf29c7170db71a34141e2effe
  8. Affected versionversion=9dd5052a8a8be252990c1bb451b51f32529411ef
  9. Affected versionversion=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <680af5b824a52faa819167628665804a14f0e0df
  10. Affected versionversion=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <724469814d805820cd37ea789769dba94123ff1a
  11. Affected versionversion=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <e9ebf1e8fc50b6a9336f9aea1082d7845e568d0e
  12. Affected versionversion=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <f9156db0987f1b426015d56505e2c58dee70c90d
  13. Affected versionversion=a02982545e61020c23f411b073ba5171381138e4 <f1d5946d47c0827bae39e1537959ce8d6f0224c5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2d586a3f5b7ec2f5a939db4abc9aa053c237545c <e58ee6bd939b773675240f5d0f5b88a367c037c4; version=5.10.67 <5.10.110; version=5.13.19 <5.14; version=5.14.6 <5.15; version=5.15; version=5.4.148 <5.4.189; version=699a077aa087c17cf29c7170db71a34141e2effe; version=9dd5052a8a8be252990c1bb451b51f32529411ef; version=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <680af5b824a52faa819167628665804a14f0e0df; version=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <724469814d805820cd37ea789769dba94123ff1a; version=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <e9ebf1e8fc50b6a9336f9aea1082d7845e568d0e; version=9de71ede81e6d1a111fdd868b2d78d459fa77f80 <f9156db0987f1b426015d56505e2c58dee70c90d; version=a02982545e61020c23f411b073ba5171381138e4 <f1d5946d47c0827bae39e1537959ce8d6f0224c5

Published CVSS scores

5.5CISA-ADPCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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