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CVE Record

CVE-2026-46179: ASoC: SOF: Don't allow pointer operations on unconfigured streams

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: Don't allow pointer operations on unconfigured streams When reporting the pointer for a compressed stream we report the current I/O frame position by dividing the position by the number of channels multiplied by the number of container bytes. These values default to 0 and are only configured as part of setting the stream parameters so this allows a divide by zero to be configured. Validate that they are non zero, returning an error if not

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2026-46179 is a Linux kernel flaw in the Sound Open Firmware audio path. A compressed audio stream can reach a pointer-reporting operation before stream parameters are configured, causing a divide-by-zero condition. The public record does not provide CVSS, confirmed impact, or evidence of active exploitation.

Executive priority

Treat this as a kernel maintenance item with uncertain severity. It does not currently justify emergency response based on the supplied evidence, but unmanaged Linux endpoints with audio hardware should be included in the next patch cycle.

Technical view

The ASoC SOF compressed-stream pointer calculation divides position by channels multiplied by container bytes. Those values default to zero until stream parameters are set. The kernel fix validates both values are nonzero and returns an error for unconfigured streams instead of performing the division.

Likely exposure

Exposure appears limited to Linux systems using affected kernel versions and the ASoC SOF compressed audio path. Distro package impact is not directly mapped in the source bundle, so confirm with your Linux vendor or kernel build inventory.

Exploitation context

CISA KEV is false in the supplied bundle, and no cited source claims active exploitation. The available evidence only describes a configurable divide-by-zero condition in a kernel audio subsystem path.

Researcher notes

The record lacks CVSS, CWE, exploit status, and detailed affected distribution mapping. Analysis should focus on reachability of compressed audio pointer operations before parameter setup and whether downstream vendors backported the nonzero validation fix.

Mitigation direction

  • Update affected Linux kernels to vendor builds containing the referenced stable fixes.
  • Check Linux distribution advisories for package names and backport status.
  • Prioritize endpoints, kiosks, and shared systems with SOF audio enabled.
  • Track kernel updates through normal change control if SOF audio is not used.

Validation and detection

  • Inventory Linux kernel versions across exposed endpoint and server fleets.
  • Confirm whether systems use ASoC SOF or compressed audio functionality.
  • Compare installed kernels against vendor advisories and referenced stable commits.
  • After patching, verify the running kernel matches the approved fixed package.
Prepared
Confidence
medium
Sources
8

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

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ATT&CK lookup starting points

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description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2026-46179 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
7Source 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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc1a731c71359407eae4fd0a5fd675ef25a582764, c1a731c71359407eae4fd0a5fd675ef25a582764, c1a731c71359407eae4fd0a5fd675ef25a582764, c1a731c71359407eae4fd0a5fd675ef25a582764, c1a731c71359407eae4fd0a5fd675ef25a582764, c1a731c71359407eae4fd0a5fd675ef25a582764unaffected
LinuxLinux6.1, 0, 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1affected
Weakness

CWE details

No CWE listed

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