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CVE Record

CVE-2022-48738: ASoC: ops: Reject out of bounds values in snd_soc_put_volsw()

In the Linux kernel, the following vulnerability has been resolved: ASoC: ops: Reject out of bounds values in snd_soc_put_volsw() We don't currently validate that the values being set are within the range we advertised to userspace as being valid, do so and reject any values that are out of range.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48738 is a Linux kernel ALSA System-on-Chip audio bug. The kernel accepted mixer volume values outside the range it told userspace was valid. The fix rejects out-of-range values. Sources do not describe business impact, privilege requirements, or active exploitation, so urgency depends on whether your Linux fleet runs affected kernels with this code.

Executive priority

Treat this as a kernel hygiene issue unless vendor guidance raises impact. There is no provided evidence of exploitation or critical severity, but Linux kernel flaws should still be folded into normal patch governance, especially for embedded or workstation fleets.

Technical view

In snd_soc_put_volsw(), ASoC control writes were not checked against advertised valid ranges. The kernel stable fixes add validation that rejects out-of-bounds userspace values. The CVE record lists Linux kernel affected versions and multiple stable commits, but provides no CVSS, CWE, exploit details, or impact classification.

Likely exposure

Exposure is most likely on Linux systems using affected kernel versions and ALSA SoC audio controls reachable from userspace. The source bundle does not identify distributions, devices, configurations, or attack prerequisites beyond the affected Linux kernel code path.

Exploitation context

The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. The available evidence describes a bounds-checking flaw and its correction, not a public exploit, exploitation technique, or observed attacks.

Researcher notes

The useful technical lead is the missing range enforcement in snd_soc_put_volsw(). The record lacks CVSS, CWE, attack vector, and impact details, so validation should focus on kernel lineage, backport status, and whether the ASoC control path is present and accessible.

Mitigation direction

  • Update affected Linux kernels to versions containing the referenced stable fixes.
  • Check your Linux distribution vendor advisories for backported fixes.
  • Prioritize systems where local users or workloads can access ALSA SoC controls.
  • Track kernel package versions against vendor fixed builds, not only upstream version numbers.

Validation and detection

  • Inventory Linux kernel versions across servers, endpoints, appliances, and embedded devices.
  • Confirm whether affected systems include ALSA SoC support and relevant mixer controls.
  • Verify installed kernel packages include the stable commits or vendor backports.
  • Document exceptions where devices cannot be patched immediately.
Prepared
Confidence
medium
Sources
10

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-2022-48738 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
2ADP providers
9Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxf227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82, f227b88f0fce5f9b82aa934f8829a741c2e06d82unaffected
LinuxLinux3.15, 0, 4.9.300, 4.14.265, 4.19.228, 5.4.178, 5.10.99, 5.15.22, 5.16.8, 5.17affected
Weakness

CWE details

No CWE listed

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