CVE-2022-49005: ASoC: ops: Fix bounds check for _sx controls
In the Linux kernel, the following vulnerability has been resolved:
ASoC: ops: Fix bounds check for _sx controls
For _sx controls the semantics of the max field is not the usual one, max
is the number of steps rather than the maximum value. This means that our
check in snd_soc_put_volsw_sx() needs to just check against the maximum
value.
Security readout for executives and security teams
Plain-English summary
CVE-2022-49005 is a Linux kernel issue in the ASoC audio subsystem. The public record says a bounds check for certain audio controls was wrong and has been fixed. Business impact is unclear because no CVSS score, CWE, or exploitation evidence is provided.
Executive priority
Handle through the normal kernel patch program unless your environment relies heavily on affected ASoC-enabled devices. Escalate priority if a vendor rates it higher or confirms exposure in a critical product.
Technical view
The issue is in snd_soc_put_volsw_sx() for ASoC _sx controls. The kernel treated the max field like a maximum value, but for _sx controls it represents a number of steps. The fix adjusts validation to check against the correct maximum value. Public sources do not describe exploitability or impact beyond the bounds-check correction.
Likely exposure
Exposure likely applies to Linux systems using affected kernel builds with the relevant ASoC audio control code. Risk may be more relevant to embedded, mobile, or audio-enabled Linux devices. The provided version data is not enough to map every distribution package directly.
Exploitation context
The source bundle does not show CISA KEV status, public exploitation, exploit code, or a CVSS score. Treat this as a kernel maintenance and exposure-validation item unless vendor advisories provide higher urgency.
Researcher notes
Evidence is limited to the CVE record and kernel stable commits. The record identifies a bounds-check fix but does not state attack prerequisites, privileges, crash potential, or confidentiality/integrity impact. Avoid assuming remote exploitability or active exploitation from the available sources.
Mitigation direction
Check Linux distribution or device vendor advisories for CVE-2022-49005.
Update to a kernel package containing the referenced stable fixes.
Prioritize embedded or appliance fleets using ASoC audio drivers.
Track kernel updates through normal change-management testing.
Validation and detection
Inventory Linux kernel versions across servers, endpoints, appliances, and embedded devices.
Identify systems using custom kernels or ASoC audio functionality.
Compare installed kernels with vendor advisories for CVE-2022-49005.
Confirm whether the relevant stable commit is included in your kernel source or package changelog.
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 · low confidence lookup
CVE-2022-49005 mapping review
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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.