CVE-2026-74293

Kernel memory corruption via unchecked audio enum

Published Aug 15, 2026 · Updated Aug 15, 2026

Out-of-bounds access in Linux allows local users to read or corrupt kernel data through crafted fsl_audmix mixer-control writes. The fsl_audmix_put_mix_clk_src() callback applies BIT() and fsl_audmix_put_out_src() indexes the prms table with a converted enum value before validating its item index. Ordinary access to the affected ALSA control device is sufficient; an out-of-range value can disclose kernel data, alter AUDMIX registers, fault the kernel, or hang audio.

CVSS severity7.8
High
EPSS probability0.13%
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 Linux allows local users to read or corrupt kernel data through crafted fsl_audmix mixer-control writes. The fsl_audmix_put_mix_clk_src() callback applies BIT() and fsl_audmix_put_out_src() indexes the prms table with a converted enum value before validating its item index. Ordinary access to the affected ALSA control device is sufficient; an out-of-range value can disclose kernel data, alter AUDMIX registers, fault the kernel, or hang audio.

The record

CVE
CVE-2026-74293
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
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=5.2
  2. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <0b10c6203e62d9e7337cc401568b201f9bac79ec
  3. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <0f1510e84d7bfc3eb9538efa65c6ea0aadf1078c
  4. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <3cd17e4e2871114d5579fa7bc8da66faf7fc1930
  5. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <5b7a23c1ed04e794ef3b31e452ef5c93e1e34b4a
  6. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <7513831b90a38d55fa089e3e1b49691e467afee6
  7. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <8fb4364eb494b926d009bfaf3c98f07c3aa5d9f3
  8. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <b36d6d48faa6b1bb723b8f4e527c531a1a68520e
  9. Affected versionversion=be1df61cf06efb355c90702e46b8d46f055acb4e <b4774a7da12b14fc37219ab4368d1907f9b5aca4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=be1df61cf06efb355c90702e46b8d46f055acb4e <0b10c6203e62d9e7337cc401568b201f9bac79ec; version=be1df61cf06efb355c90702e46b8d46f055acb4e <0f1510e84d7bfc3eb9538efa65c6ea0aadf1078c; version=be1df61cf06efb355c90702e46b8d46f055acb4e <3cd17e4e2871114d5579fa7bc8da66faf7fc1930; version=be1df61cf06efb355c90702e46b8d46f055acb4e <5b7a23c1ed04e794ef3b31e452ef5c93e1e34b4a; version=be1df61cf06efb355c90702e46b8d46f055acb4e <7513831b90a38d55fa089e3e1b49691e467afee6; version=be1df61cf06efb355c90702e46b8d46f055acb4e <8fb4364eb494b926d009bfaf3c98f07c3aa5d9f3; version=be1df61cf06efb355c90702e46b8d46f055acb4e <b36d6d48faa6b1bb723b8f4e527c531a1a68520e; version=be1df61cf06efb355c90702e46b8d46f055acb4e <b4774a7da12b14fc37219ab4368d1907f9b5aca4

Published CVSS scores

7.8LinuxCVSS: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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