CVE-2022-50325

Kernel memory corruption via oversized firmware reply

Published Sep 15, 2025 · Updated Sep 15, 2025

Heap buffer overflow in the Intel AVS driver in Linux 5.18 through 6.0.15 and 6.1 through 6.1.1 allows local users to corrupt kernel memory. The LARGE_CONFIG_GET reply path passes a firmware-reported receive size to memcpy_fromio() without limiting it to the allocated RX buffer. Ordinary access to local ALSA mixer controls can trigger the path without user interaction, leading to kernel memory disclosure, corruption, or a system crash.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the Intel AVS driver in Linux 5.18 through 6.0.15 and 6.1 through 6.1.1 allows local users to corrupt kernel memory. The LARGE_CONFIG_GET reply path passes a firmware-reported receive size to memcpy_fromio() without limiting it to the allocated RX buffer. Ordinary access to local ALSA mixer controls can trigger the path without user interaction, leading to kernel memory disclosure, corruption, or a system crash.

The record

CVE
CVE-2022-50325
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.18
  2. Affected versionversion=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <0bad12fee5ae16ab439d97c66c4238f5f4cc7f68
  3. Affected versionversion=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <23ae34e033b2c0e5e88237af82b163b296fd6aa9
  4. Affected versionversion=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <ec1f0c12cb2e614c3fa8e9402f7ffcf82166078a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <0bad12fee5ae16ab439d97c66c4238f5f4cc7f68; version=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <23ae34e033b2c0e5e88237af82b163b296fd6aa9; version=f14a1c5a9f830025dc8638303ddefd5f731ae4bc <ec1f0c12cb2e614c3fa8e9402f7ffcf82166078a

Published CVSS scores

7.8NVDCVSS: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
T1068Exploitation for Privilege Escalation

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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