CVE-2022-50866

Kernel fault via unchecked allocation failure

Published Dec 30, 2025 · Updated Dec 30, 2025

Null-pointer dereference in the Linux ASoC PXA filter allows attackers to fault the kernel when a formatted-name allocation fails. The filter() routine in sound/soc/pxa/mmp-pcm.c passes the unchecked result of kasprintf() to strcmp(), so allocation failure supplies a null pointer. The public record does not specify an attacker-controlled input, required privilege, or whether the fault becomes a system-wide crash.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Null-pointer dereference in the Linux ASoC PXA filter allows attackers to fault the kernel when a formatted-name allocation fails. The filter() routine in sound/soc/pxa/mmp-pcm.c passes the unchecked result of kasprintf() to strcmp(), so allocation failure supplies a null pointer. The public record does not specify an attacker-controlled input, required privilege, or whether the fault becomes a system-wide crash.

The record

CVE
CVE-2022-50866
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=3.6
  2. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <0abd1d78317a3a2dfe00b203fbf14ee7df537e0a
  3. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <21a1409e8cf73053b54f7860548e3043dfa351a9
  4. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <21b92cf41952577a95bfa430e39478cbd66e42a7
  5. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <3ec75e0ea9550b8f2e531172f2e67ba9d5227ec3
  6. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <5b510a82740d2a42a75b5661b402bcaf8ae22cd5
  7. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <83baa509396a742e0ce145b09fde1ce0a948f49a
  8. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <9fb9b3b67a5b8669296d6372cd901ef86557e6f6
  9. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <a8baccb79de2f48a2083d51febf627eb50ce1898
  10. Affected versionversion=7a824e214e25a49442fe868dac0af8a904b24f58 <ec7bf231aaa1bdbcb69d23bc50c753c80fb22429

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.6; version=7a824e214e25a49442fe868dac0af8a904b24f58 <0abd1d78317a3a2dfe00b203fbf14ee7df537e0a; version=7a824e214e25a49442fe868dac0af8a904b24f58 <21a1409e8cf73053b54f7860548e3043dfa351a9; version=7a824e214e25a49442fe868dac0af8a904b24f58 <21b92cf41952577a95bfa430e39478cbd66e42a7; version=7a824e214e25a49442fe868dac0af8a904b24f58 <3ec75e0ea9550b8f2e531172f2e67ba9d5227ec3; version=7a824e214e25a49442fe868dac0af8a904b24f58 <5b510a82740d2a42a75b5661b402bcaf8ae22cd5; version=7a824e214e25a49442fe868dac0af8a904b24f58 <83baa509396a742e0ce145b09fde1ce0a948f49a; version=7a824e214e25a49442fe868dac0af8a904b24f58 <9fb9b3b67a5b8669296d6372cd901ef86557e6f6; version=7a824e214e25a49442fe868dac0af8a904b24f58 <a8baccb79de2f48a2083d51febf627eb50ce1898; version=7a824e214e25a49442fe868dac0af8a904b24f58 <ec7bf231aaa1bdbcb69d23bc50c753c80fb22429

Published CVSS scores

No CVSS assessment is available in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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