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CVE Record

CVE-2022-50052: ASoC: Intel: avs: Fix potential buffer overflow by snprintf()

In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: avs: Fix potential buffer overflow by snprintf() snprintf() returns the would-be-filled size when the string overflows the given buffer size, hence using this value may result in a buffer overflow (although it's unrealistic). This patch replaces it with a safer version, scnprintf() for papering over such a potential issue.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel issue in Intel AVS audio driver code. A string formatting return value could be reused in a way that might overflow a buffer, though the kernel note calls exploitation unrealistic. Treat it as a routine kernel maintenance exposure unless affected systems are sensitive or internet-facing through other paths.

Executive priority

Handle through standard kernel patch management, not emergency response, unless internal validation shows affected kernels on high-value systems. The absence of severity scoring and exploitation evidence lowers urgency, but kernel flaws still warrant timely remediation discipline.

Technical view

The fix replaces snprintf() with scnprintf() in ASoC Intel avs code because snprintf() returns the would-have-written length on truncation. Using that value later can exceed the destination buffer size. Public data does not provide CVSS, CWE, attack vector, privileges, or a concrete exploit path.

Likely exposure

Exposure appears limited to Linux kernels identified in the source bundle, especially systems with the Intel AVS ASoC driver present or enabled. Downstream distribution exposure depends on kernel packaging and backported fixes, so version checks must be mapped against vendor kernel advisories.

Exploitation context

No CISA KEV listing is provided, and the source bundle does not cite active exploitation or public exploit code. The upstream description characterizes the overflow scenario as potential and unrealistic, so exploitation likelihood is unclear but appears low from available evidence.

Researcher notes

The public record is sparse: no CVSS, CWE, exploit conditions, or detailed affected downstream products are supplied. Analysis should focus on commit presence, driver reachability, and distribution backports rather than assuming broad practical exploitability.

Mitigation direction

  • Check whether deployed kernels include the referenced stable fixes.
  • Prioritize normal kernel updates from the operating system vendor.
  • Map vendor kernel package versions to upstream affected versions and fixes.
  • Monitor Linux distribution advisories for backported remediation details.

Validation and detection

  • Inventory systems running Linux kernel 5.19-series or related vendor builds.
  • Check whether Intel AVS ASoC driver code is built or loaded.
  • Confirm installed kernel changelogs include the snprintf-to-scnprintf fix.
  • Record exceptions where vendor guidance says the build is unaffected.
Prepared
Confidence
medium
Sources
4

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

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ATT&CK lookup starting points

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CVE-2022-50052 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
3Timeline events
0ADP providers
3Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxf1b3b320bd6519b16e3480f74f2926d106e3bcba, f1b3b320bd6519b16e3480f74f2926d106e3bcbaunaffected
LinuxLinux5.19, 0, 5.19.4, 6.0affected
Weakness

CWE details

No CWE listed

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