CVE-2026-64041

Local privilege escalation via oversized firmware scene name

Published Jul 19, 2026 · Updated Jul 19, 2026

Stack buffer overflow in the Linux Kernel fs210x codec driver allows local users to gain kernel privileges through an ALSA control ioctl. fs210x_effect_scene_info() passes the firmware scene-name length to strscpy() instead of the 64-byte destination size, permitting a kernel-stack overwrite. Exploitation requires access to an ALSA control device and firmware containing a scene name of at least 64 bytes; successful corruption enables kernel code execution or a system panic.

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

Stack buffer overflow in the Linux Kernel fs210x codec driver allows local users to gain kernel privileges through an ALSA control ioctl. fs210x_effect_scene_info() passes the firmware scene-name length to strscpy() instead of the 64-byte destination size, permitting a kernel-stack overwrite. Exploitation requires access to an ALSA control device and firmware containing a scene name of at least 64 bytes; successful corruption enables kernel code execution or a system panic.

The record

CVE
CVE-2026-64041
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=6.18
  2. Affected versionversion=75611770177965ae902c87c96eace07542beff07 <0d435a7ebcd4e97e47673c1ab6fb27f973a053ec
  3. Affected versionversion=75611770177965ae902c87c96eace07542beff07 <1ddf678bb75b6383c775ece61d40956c441d8a26
  4. Affected versionversion=75611770177965ae902c87c96eace07542beff07 <6daefdf1cd3c56483f61970a76c0ad6028e4118f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.18; version=75611770177965ae902c87c96eace07542beff07 <0d435a7ebcd4e97e47673c1ab6fb27f973a053ec; version=75611770177965ae902c87c96eace07542beff07 <1ddf678bb75b6383c775ece61d40956c441d8a26; version=75611770177965ae902c87c96eace07542beff07 <6daefdf1cd3c56483f61970a76c0ad6028e4118f

Published CVSS scores

7.8Linux kernel CNACVSS: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

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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