CVE-2022-50049

Local system crash via unchecked BE substream

Published Jun 18, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux kernel ASoC DPCM allows local users to crash the system by reaching an asymmetric BE stream. dpcm_add_paths() accepts a backend connection without confirming that a substream exists for the requested direction, and later code dereferences the missing substream. A local low-privileged account and an asymmetric ASoC backend configuration are required; successful exploitation interrupts the host.

CVSS severity5.5
Medium
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

NULL pointer dereference in Linux kernel ASoC DPCM allows local users to crash the system by reaching an asymmetric BE stream. dpcm_add_paths() accepts a backend connection without confirming that a substream exists for the requested direction, and later code dereferences the missing substream. A local low-privileged account and an asymmetric ASoC backend configuration are required; successful exploitation interrupts the host.

The record

CVE
CVE-2022-50049
Published
Jun 18, 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. Jun 18, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.17
  2. Affected versionversion=bbf7d3b1c4f40eb02dd1dffb500ba00b0bff0303 <6a840e8ef6b6c56d1b7e6a555adc31135e517875
  3. Affected versionversion=bbf7d3b1c4f40eb02dd1dffb500ba00b0bff0303 <754590651ccbbcc74a7c20907be4bb15d642bde3
  4. Affected versionversion=c474bb800000d1a93624f6d060e2bba16edf6820 <aa803e6ecac78e93b24ebefa17c207d6392d8ad4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=bbf7d3b1c4f40eb02dd1dffb500ba00b0bff0303 <6a840e8ef6b6c56d1b7e6a555adc31135e517875; version=bbf7d3b1c4f40eb02dd1dffb500ba00b0bff0303 <754590651ccbbcc74a7c20907be4bb15d642bde3; version=c474bb800000d1a93624f6d060e2bba16edf6820 <aa803e6ecac78e93b24ebefa17c207d6392d8ad4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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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