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CVE Record

CVE-2022-50866: ASoC: pxa: fix null-pointer dereference in filter()

In the Linux kernel, the following vulnerability has been resolved: ASoC: pxa: fix null-pointer dereference in filter() kasprintf() would return NULL pointer when kmalloc() fail to allocate. Need to check the return pointer before calling strcmp().

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50866 is a Linux kernel bug in the PXA ASoC audio driver. If memory allocation fails, the driver can dereference a null pointer, potentially causing a kernel crash. The public record does not provide CVSS, confirmed exploitation, or a broad remote attack path.

Executive priority

Treat as routine kernel maintenance unless PXA ASoC audio is used in production or embedded devices. Prioritize affected embedded Linux fleets where a kernel crash could disrupt operations.

Technical view

The flaw is in ASoC pxa filter() handling. kasprintf() can return NULL on kmalloc() failure, but the code called strcmp() without checking the pointer. Kernel stable commits add the missing NULL check. The CVE record lists Linux kernel affected and references multiple stable backports.

Likely exposure

Likely limited to Linux systems using or shipping the PXA ASoC audio driver code path. General-purpose servers may have low practical exposure unless that driver is present and reachable. Confirm against distribution kernel packages and configurations.

Exploitation context

No active exploitation is indicated by KEV, and the provided sources do not describe exploitability. The likely impact is availability loss through a kernel null-pointer dereference if the vulnerable path is triggered under allocation failure conditions.

Researcher notes

Evidence is limited to the CVE record and kernel stable commit references. No CVSS, CWE, exploit report, or detailed trigger conditions are provided. Avoid assuming remote exploitability; focus validation on driver presence and fixed commit inclusion.

Mitigation direction

  • Upgrade to a kernel containing the referenced stable fix commits.
  • Apply Linux distribution kernel updates when available.
  • Check vendor advisories for affected package versions and backports.
  • Prioritize systems that use PXA ASoC audio hardware or drivers.

Validation and detection

  • Inventory Linux kernel versions and vendor package builds.
  • Determine whether PXA ASoC driver code is built or loaded.
  • Verify the kernel includes one referenced stable fix commit.
  • Review distribution changelogs for CVE-2022-50866 backport notes.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2022-50866 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
10Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58, 7a824e214e25a49442fe868dac0af8a904b24f58unaffected
LinuxLinux3.6, 0, 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.