CVE-2022-50315

Kernel out-of-bounds access via undersized AHCI array

Published Sep 15, 2025 · Updated Sep 15, 2025

Out-of-bounds access in the Linux kernel AHCI driver allows local users to access memory outside an array through a 16-port SATA multiplier. sata_pmp_init_links assigns link identifiers through SATA_PMP_MAX_PORTS, but ahci_qc_issue indexes an ahci_em_priv array sized for only eight enclosure-management slots. The path requires AHCI enclosure management and a port-multiplier index above seven; the published report demonstrates UBSAN detection but does not document code execution or data disclosure.

CVSS severity7.8
High
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 access in the Linux kernel AHCI driver allows local users to access memory outside an array through a 16-port SATA multiplier. sata_pmp_init_links assigns link identifiers through SATA_PMP_MAX_PORTS, but ahci_qc_issue indexes an ahci_em_priv array sized for only eight enclosure-management slots. The path requires AHCI enclosure management and a port-multiplier index above seven; the published report demonstrates UBSAN detection but does not document code execution or data disclosure.

The record

CVE
CVE-2022-50315
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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 <1e41e693f458eef2d5728207dbd327cd3b16580a
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <303d0f761431d848dd8d7ff9fd9b8c101879cabe
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <383b7c50f5445ff8dbbf03080905648d6980c39d
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67a00c299c5c143817c948fbc7de1a2fa1af38fb
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8fbe13de1cc7cef2564be3cbf60400b33eee023b
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6314d5f68764550c84d732ce901ddd3ac6b415f
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <da2ea4a961d9f89ed248734e7032350c260dc3a3
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f70bd4339cb68bc7e206af4c922bc0d249244403

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1e41e693f458eef2d5728207dbd327cd3b16580a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <303d0f761431d848dd8d7ff9fd9b8c101879cabe; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <383b7c50f5445ff8dbbf03080905648d6980c39d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <67a00c299c5c143817c948fbc7de1a2fa1af38fb; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8fbe13de1cc7cef2564be3cbf60400b33eee023b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d6314d5f68764550c84d732ce901ddd3ac6b415f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <da2ea4a961d9f89ed248734e7032350c260dc3a3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f70bd4339cb68bc7e206af4c922bc0d249244403

Published CVSS scores

7.8NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index

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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