CVE-2022-50435

Kernel crash via stale ext4 inline-data state

Published Oct 1, 2025 · Updated Oct 1, 2025

Denial of service in ext4 in Linux allows local users to crash the kernel through a direct-I/O, truncate, and buffered-write sequence. An ext4 direct-I/O write leaves EXT4_STATE_MAY_INLINE_DATA set, so a later truncate and buffered write allocates inline data beside normal blocks. Local write access to an ext4 file is required, and reaching ext4_writepages can trigger a kernel BUG that interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.16%
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 ext4 in Linux allows local users to crash the kernel through a direct-I/O, truncate, and buffered-write sequence. An ext4 direct-I/O write leaves EXT4_STATE_MAY_INLINE_DATA set, so a later truncate and buffered write allocates inline data beside normal blocks. Local write access to an ext4 file is required, and reaching ext4_writepages can trigger a kernel BUG that interrupts the host.

The record

CVE
CVE-2022-50435
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3b31cc533665899965e351aae6cc3c3f3b9cc076
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <43ed16910af200e2fcfe16986bee1a67fba94992
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4bb26f2885ac6930984ee451b952c5a6042f2c0e
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <59b108630a4987f71e1dc1dc50b8062e992b49c6
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <771f15782d95760cde352c8d4bfd6f2c70719568
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <89db2b50469bdbccb06ab072096d9d403124abac
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a22f52d883313bbfaf864669c14003f9456d4f8f
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d8e4af8314df54d94cf2a541cf9c8626afe81d41
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fb98cb61efff3b2a1964939465ccaaf906af1d4f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3b31cc533665899965e351aae6cc3c3f3b9cc076; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <43ed16910af200e2fcfe16986bee1a67fba94992; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4bb26f2885ac6930984ee451b952c5a6042f2c0e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <59b108630a4987f71e1dc1dc50b8062e992b49c6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <771f15782d95760cde352c8d4bfd6f2c70719568; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <89db2b50469bdbccb06ab072096d9d403124abac; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a22f52d883313bbfaf864669c14003f9456d4f8f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d8e4af8314df54d94cf2a541cf9c8626afe81d41; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fb98cb61efff3b2a1964939465ccaaf906af1d4f

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5NVDCVSS: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.

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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