CVE-2025-37979

Local kernel-memory corruption via LPASS array indexing

Published May 20, 2025 · Updated Aug 5, 2026

Out-of-bounds access in affected Linux kernels allows local users to corrupt kernel memory through SC7280 sound-device operations. The SC7280 ASoC driver uses q6afe port IDs such as 113 as indexes into 34-entry LPASS driver-data arrays in PCM callbacks. A low-privileged local user with PCM-device access can trigger deterministic out-of-bounds reads, writes, and frees, causing disclosure, kernel-state corruption, or a crash.

CVSS severity7.8
High
EPSS probability0.21%
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 affected Linux kernels allows local users to corrupt kernel memory through SC7280 sound-device operations. The SC7280 ASoC driver uses q6afe port IDs such as 113 as indexes into 34-entry LPASS driver-data arrays in PCM callbacks. A low-privileged local user with PCM-device access can trigger deterministic out-of-bounds reads, writes, and frees, causing disclosure, kernel-state corruption, or a crash.

The record

CVE
CVE-2025-37979
Published
May 20, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE 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

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=77d0ffef793da818741127f4905a3e3d45d05ac7 <a12c14577882b1f2b4cff0f86265682f16e97b0c
  3. Affected versionversion=77d0ffef793da818741127f4905a3e3d45d05ac7 <a31a4934b31faea76e735bab17e63d02fcd8e029
  4. Affected versionversion=77d0ffef793da818741127f4905a3e3d45d05ac7 <b807b7c81a6d066757a94af7b8fa5b6a37e4d0b3
  5. Affected versionversion=77d0ffef793da818741127f4905a3e3d45d05ac7 <c0ce01e0ff8a0d61a7b089ab309cdc12bc527c39
  6. Affected versionversion=77d0ffef793da818741127f4905a3e3d45d05ac7 <d78888853eb53f47ae16cf3aa5d0444d0331b9f8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=77d0ffef793da818741127f4905a3e3d45d05ac7 <a12c14577882b1f2b4cff0f86265682f16e97b0c; version=77d0ffef793da818741127f4905a3e3d45d05ac7 <a31a4934b31faea76e735bab17e63d02fcd8e029; version=77d0ffef793da818741127f4905a3e3d45d05ac7 <b807b7c81a6d066757a94af7b8fa5b6a37e4d0b3; version=77d0ffef793da818741127f4905a3e3d45d05ac7 <c0ce01e0ff8a0d61a7b089ab309cdc12bc527c39; version=77d0ffef793da818741127f4905a3e3d45d05ac7 <d78888853eb53f47ae16cf3aa5d0444d0331b9f8

Published CVSS scores

6.9UbuntuCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Amazon LinuxCVSS: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

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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