CVE-2022-48717

Out-of-bounds access via negative gain index

Published Jun 20, 2024 · Updated Aug 5, 2026

Out-of-bounds access in the Linux kernel MAX9759 ASoC codec driver allows local users to index before a gain table through a control write. speaker_gain_control_put rejects values above 3 but accepts a negative ALSA control value, stores it in priv->gain, and leaves later code to index speaker_gain_table with that value. Access requires the MAX9759 driver and permission to write its ALSA mixer control; the kernel team specifies no consequence beyond the invalid access.

CVSS severity7.8
High
EPSS probability0.22%
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 MAX9759 ASoC codec driver allows local users to index before a gain table through a control write. speaker_gain_control_put rejects values above 3 but accepts a negative ALSA control value, stores it in priv->gain, and leaves later code to index speaker_gain_table with that value. Access requires the MAX9759 driver and permission to write its ALSA mixer control; the kernel team specifies no consequence beyond the invalid access.

The record

CVE
CVE-2022-48717
Published
Jun 20, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=4.17
  2. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <4c907bcd9dcd233da6707059d777ab389dcbd964
  3. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <5a45448ac95b715173edb1cd090ff24b6586d921
  4. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <71e60c170105d153e34d01766c1e4db26a4b24cc
  5. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <a0f49d12547d45ea8b0f356a96632dd503941c1e
  6. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <baead410e5db49e962a67fffc17ac30e44b50b7c
  7. Affected versionversion=fa8d915172b8c10ec0734c4021e99e9705023b07 <f114fd6165dfb52520755cc4d1c1dfbd447b88b6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.17; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <4c907bcd9dcd233da6707059d777ab389dcbd964; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <5a45448ac95b715173edb1cd090ff24b6586d921; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <71e60c170105d153e34d01766c1e4db26a4b24cc; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <a0f49d12547d45ea8b0f356a96632dd503941c1e; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <baead410e5db49e962a67fffc17ac30e44b50b7c; version=fa8d915172b8c10ec0734c4021e99e9705023b07 <f114fd6165dfb52520755cc4d1c1dfbd447b88b6

Published CVSS scores

7.8NIST NVDCVSS: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 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-787Out-of-bounds Write

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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