CVE-2026-53018

Kernel panic via redundant F2FS page read

Published Jun 24, 2026 · Updated Jun 24, 2026

Denial of service in Linux Kernel 4.19 through 6.18.32 and 6.19 through 7.0.9 allows local users to trigger an F2FS kernel panic. During garbage collection, ra_data_block initiates I/O for a page that move_data_block has already relocated and marked up to date, so folio_end_read hits VM_BUG_ON_FOLIO. An affected F2FS filesystem and low-privilege local access are required; the resulting kernel BUG interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.12%
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 Linux Kernel 4.19 through 6.18.32 and 6.19 through 7.0.9 allows local users to trigger an F2FS kernel panic. During garbage collection, ra_data_block initiates I/O for a page that move_data_block has already relocated and marked up to date, so folio_end_read hits VM_BUG_ON_FOLIO. An affected F2FS filesystem and low-privilege local access are required; the resulting kernel BUG interrupts the host.

The record

CVE
CVE-2026-53018
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=4.19
  2. Affected versionversion=6aa58d8ad20a3323f42274c25820a6f54192422d <4623c251496b99c530ce225c05334f4eac8b933a
  3. Affected versionversion=6aa58d8ad20a3323f42274c25820a6f54192422d <570e2ccc7cb35fe720106964e65060602d3d2ac4
  4. Affected versionversion=6aa58d8ad20a3323f42274c25820a6f54192422d <b663ebb8a340eae5442e605b6acd2cff5677f016

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.19; version=6aa58d8ad20a3323f42274c25820a6f54192422d <4623c251496b99c530ce225c05334f4eac8b933a; version=6aa58d8ad20a3323f42274c25820a6f54192422d <570e2ccc7cb35fe720106964e65060602d3d2ac4; version=6aa58d8ad20a3323f42274c25820a6f54192422d <b663ebb8a340eae5442e605b6acd2cff5677f016

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 exploitUnconfirmed

Weakness, pattern, technique

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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