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CVE Record

CVE-2026-45992: ALSA: caiaq: Fix potentially leftover ep1_in_urb at error path

In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Fix potentially leftover ep1_in_urb at error path The previous fix for handling the error from setup_card() missed that an internal URB cdev->ep1_in_urb might have been already submitted beforehand. In the normal case, this URB gets killed at the disconnection, but in the error path, we didn't do it, hence there can be a potential leak. Fix it in the error path for setup_card(), too.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2026-45992 is a Linux kernel issue in the ALSA caiaq USB audio driver. During an error path, an internal USB request could remain submitted instead of being cleaned up, creating a potential resource leak. The public record does not provide CVSS, CWE, or impact detail.

Executive priority

Treat as a routine kernel maintenance item unless your environment depends on affected USB audio driver paths. There is no cited active exploitation or severity score, but kernel updates should still be tracked through normal vulnerability management.

Technical view

The resolved bug concerns cdev->ep1_in_urb in the ALSA caiaq driver. setup_card() error handling could miss cleanup after the URB was already submitted. Normal disconnect cleanup killed the URB, but the setup error path did not. Kernel stable commits add error-path cleanup.

Likely exposure

Exposure appears limited to Linux systems running affected kernel builds with the ALSA caiaq driver path relevant to supported USB audio hardware. The source lists Linux 7.1-rc1 through 7.1-rc2 as affected and provides multiple stable commit references.

Exploitation context

No source in the bundle reports active exploitation, public exploit availability, or inclusion in CISA KEV. The described condition is a potential leak during driver setup failure, not a documented remote attack path.

Researcher notes

The public evidence is narrow: a kernel commit message describing a missed URB cleanup in setup_card() error handling. Impact, attacker prerequisites, and triggering conditions are not fully characterized in the supplied sources.

Mitigation direction

  • Apply the relevant Linux stable kernel update containing the referenced fix.
  • Check your distribution kernel advisory for backported caiaq driver fixes.
  • Prioritize systems using ALSA caiaq-supported USB audio hardware or custom kernels.
  • Avoid direct wrangler deploy equivalent operational shortcuts; follow normal kernel change controls.

Validation and detection

  • Inventory running kernel versions and compare them with distribution fixed builds.
  • Check whether the caiaq ALSA driver is present or loadable on affected systems.
  • Review kernel package changelogs for the referenced stable commit IDs.
  • Confirm post-update kernels include the caiaq setup_card() error-path cleanup.
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

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CVE-2026-45992 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
9Source 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
LinuxLinuxda938aa9fc7826901921dcea225948ab21a97e45, 09616e25f502080ba684fc7fcf959d1376ab756d, b956e48371f2ff72b76be9a829800ecec963bd45, f537e3ad69609f6924a4db6b4a7f6561f5288bdd, 6251e3e256337a30160ef59ab1580dde4d1acd28, e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056, 096dd8519cf2f768e9e14f224b627f7aaee1a9c5, 28abd224db4a49560b452115bca3672a20e45b2funaffected
LinuxLinux7.1-rc1, 0, 7.1-rc2affected
Weakness

CWE details

No CWE listed

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