CVE-2026-74500

Kernel stack disclosure via short USB response

Published Aug 15, 2026 · Updated Aug 15, 2026

Information disclosure in the Linux kernel allows local users to read kernel stack data through ALSA RME Digiface status controls. snd_rme_digiface_read_status() leaves a four-word stack buffer uninitialized, and a short USB control-IN response causes the full buffer, including residual bytes, to be copied into status[]. Access to /dev/snd/controlC* and an RME Digiface device that returns a short data stage are required; the eight status controls expose the 16-byte frame.

CVSS severity2.5
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the Linux kernel allows local users to read kernel stack data through ALSA RME Digiface status controls. snd_rme_digiface_read_status() leaves a four-word stack buffer uninitialized, and a short USB control-IN response causes the full buffer, including residual bytes, to be copied into status[]. Access to /dev/snd/controlC* and an RME Digiface device that returns a short data stage are required; the eight status controls expose the 16-byte frame.

The record

CVE
CVE-2026-74500
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=3089703ab71484a8b9a7641051181d11d60f870c
  2. Affected versionversion=50f63f11a6ddaa0d34574df72b3fa6ee257c057d
  3. Affected versionversion=6.10.14 <6.11
  4. Affected versionversion=6.11.3 <6.12
  5. Affected versionversion=611a96f6acf2e74fe28cb90908a9c183862348ce <441aaad150c57edaf57ee482a79a3bf4c5b7e353
  6. Affected versionversion=611a96f6acf2e74fe28cb90908a9c183862348ce <7ba01e0d3539d9cf0aef3e82938f1648147744cc
  7. Affected versionversion=611a96f6acf2e74fe28cb90908a9c183862348ce <98dbfbb38e297c25c5b0af4a9018d71ac25e8554
  8. Affected versionversion=611a96f6acf2e74fe28cb90908a9c183862348ce <b3a346d5c99dd73cf84711f2a43e42691990efd2
  9. Affected versionversion=6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3089703ab71484a8b9a7641051181d11d60f870c; version=50f63f11a6ddaa0d34574df72b3fa6ee257c057d; version=6.10.14 <6.11; version=6.11.3 <6.12; version=611a96f6acf2e74fe28cb90908a9c183862348ce <441aaad150c57edaf57ee482a79a3bf4c5b7e353; version=611a96f6acf2e74fe28cb90908a9c183862348ce <7ba01e0d3539d9cf0aef3e82938f1648147744cc; version=611a96f6acf2e74fe28cb90908a9c183862348ce <98dbfbb38e297c25c5b0af4a9018d71ac25e8554; version=611a96f6acf2e74fe28cb90908a9c183862348ce <b3a346d5c99dd73cf84711f2a43e42691990efd2; version=6.12

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

T1005Data from Local System

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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