CVE-2022-49842

Kernel memory corruption via double device unregister

Published May 1, 2025 · Updated May 11, 2026

Use-after-free in the Linux kernel ASoC core allows local users to corrupt kernel memory during sound module removal. snd_soc_init() ignores failure from snd_soc_util_init(), allowing soc_dummy_dev to be unregistered during failed initialization and again from snd_soc_exit(). Reaching the demonstrated path requires an initialization failure followed by ASoC module removal; the observed result is an invalid kernel-memory read.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel ASoC core allows local users to corrupt kernel memory during sound module removal. snd_soc_init() ignores failure from snd_soc_util_init(), allowing soc_dummy_dev to be unregistered during failed initialization and again from snd_soc_exit(). Reaching the demonstrated path requires an initialization failure followed by ASoC module removal; the observed result is an invalid kernel-memory read.

The record

CVE
CVE-2022-49842
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
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=3.0
  2. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <2ec3f558db343b045a7c7419cdbaec266b8ac1a7
  3. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <34eee4189bcebbd5f6a2ff25ef0cb893ad33d51e
  4. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <41fad4f712e081acdfde8b59847f9f66eaf407a0
  5. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <6ec27c53886c8963729885bcf2dd996eba2767a7
  6. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <8d21554ec7680e9585fb852d933203c3db60dad1
  7. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <90bbdf30a51e42378cb23a312005a022794b8e1e
  8. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <a3365e62239dc064019a244bde5686ac18527c22
  9. Affected versionversion=fb257897bf20c5f0e1df584bb5b874e811651263 <c5674bd073c0fd9f620ca550c5ff08d0d429bdd9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.0; version=fb257897bf20c5f0e1df584bb5b874e811651263 <2ec3f558db343b045a7c7419cdbaec266b8ac1a7; version=fb257897bf20c5f0e1df584bb5b874e811651263 <34eee4189bcebbd5f6a2ff25ef0cb893ad33d51e; version=fb257897bf20c5f0e1df584bb5b874e811651263 <41fad4f712e081acdfde8b59847f9f66eaf407a0; version=fb257897bf20c5f0e1df584bb5b874e811651263 <6ec27c53886c8963729885bcf2dd996eba2767a7; version=fb257897bf20c5f0e1df584bb5b874e811651263 <8d21554ec7680e9585fb852d933203c3db60dad1; version=fb257897bf20c5f0e1df584bb5b874e811651263 <90bbdf30a51e42378cb23a312005a022794b8e1e; version=fb257897bf20c5f0e1df584bb5b874e811651263 <a3365e62239dc064019a244bde5686ac18527c22; version=fb257897bf20c5f0e1df584bb5b874e811651263 <c5674bd073c0fd9f620ca550c5ff08d0d429bdd9

Published CVSS scores

7.8CISA ADP VulnrichmentCVSS: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

CWE-416Use After Free
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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