CVE-2025-37793

Local kernel crash via unchecked allocation failure

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in Intel AVS audio support in Linux allows local users to crash the kernel during component probing. In avs_component_probe(), devm_kasprintf() can return NULL while allocating a fallback topology filename, but the result is used in subsequent filename formatting without a NULL check. Reachability requires the Intel AVS fallback-topology probe and an allocation failure; the documented consequence is an availability interruption, not data access or modification.

CVSS severity5.5
Medium
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

NULL pointer dereference in Intel AVS audio support in Linux allows local users to crash the kernel during component probing. In avs_component_probe(), devm_kasprintf() can return NULL while allocating a fallback topology filename, but the result is used in subsequent filename formatting without a NULL check. Reachability requires the Intel AVS fallback-topology probe and an allocation failure; the documented consequence is an availability interruption, not data access or modification.

The record

CVE
CVE-2025-37793
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.6
  2. Affected versionversion=739c031110da9ba966b0189fa25a2a1c0d42263c <23fde311ea1d0a6c36bf92ce48b90b77d0ece1a4
  3. Affected versionversion=739c031110da9ba966b0189fa25a2a1c0d42263c <95f723cf141b95e3b3a5b92cf2ea98a863fe7275
  4. Affected versionversion=739c031110da9ba966b0189fa25a2a1c0d42263c <aaa93b8846101461de815759d39979661b82d5a5
  5. Affected versionversion=739c031110da9ba966b0189fa25a2a1c0d42263c <c2825073271b6f15e669a424b363612082494863

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.6; version=739c031110da9ba966b0189fa25a2a1c0d42263c <23fde311ea1d0a6c36bf92ce48b90b77d0ece1a4; version=739c031110da9ba966b0189fa25a2a1c0d42263c <95f723cf141b95e3b3a5b92cf2ea98a863fe7275; version=739c031110da9ba966b0189fa25a2a1c0d42263c <aaa93b8846101461de815759d39979661b82d5a5; version=739c031110da9ba966b0189fa25a2a1c0d42263c <c2825073271b6f15e669a424b363612082494863

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.4Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:H/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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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