CVE-2022-50456

Kernel panic via invalid inline-extent offset read

Published Oct 1, 2025 · Updated Oct 1, 2025

Out-of-bounds read in Linux btrfs on affected kernel releases allows local users to trigger a kernel panic through a logical-to-inode lookup. The add_all_parents function treats an inline extent as a regular extent and reads its meaningless offset field past the end of the extent buffer. The target must use btrfs with an inline extent followed by a regular or preallocated extent, with the inline item first in its leaf.

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

Out-of-bounds read in Linux btrfs on affected kernel releases allows local users to trigger a kernel panic through a logical-to-inode lookup. The add_all_parents function treats an inline extent as a regular extent and reads its meaningless offset field past the end of the extent buffer. The target must use btrfs with an inline extent followed by a regular or preallocated extent, with the inline item first in its leaf.

The record

CVE
CVE-2022-50456
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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 <0061ab5153fb8bc574b44fbb773680d0ede48c9c
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <560840afc3e63bbe5d9c5ef6b2ecf8f3589adff6
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <645e2dac6e97f756f28a2f82b2e7bf7f29a68827
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <99590f29b2b7567fda2b503aa3d81a0d3e09dce5
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a94b90ac1f251d1007c0c43ee289a61b50f2505f
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c59ee1528b3432ec9dca220567f7eb507820917a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0061ab5153fb8bc574b44fbb773680d0ede48c9c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <560840afc3e63bbe5d9c5ef6b2ecf8f3589adff6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <645e2dac6e97f756f28a2f82b2e7bf7f29a68827; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <99590f29b2b7567fda2b503aa3d81a0d3e09dce5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a94b90ac1f251d1007c0c43ee289a61b50f2505f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c59ee1528b3432ec9dca220567f7eb507820917a

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

T1499Endpoint Denial of Service

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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