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PatchSiren cyber security CVE debrief

CVE-2026-98428 Linux CVE debrief

The Linux kernel has a vulnerability in the ALSA usb: 6fire driver. The driver uses embedded URBs, which can lead to a Use-After-Free (UAF) when the URB is released asynchronously. This has been resolved by converting embedded URBs to properly allocated ones via usb_alloc_urb(). The vulnerability affects Linux kernel versions and defenders should verify their kernel versions to determine if vulnerable. The fix involves converting embedded URBs to properly allocated ones, and defenders should prioritize verifying Linux kernel versions and applying patches to address the vulnerability.

Vendor
Linux
Product
Unknown
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-14
Original CVE updated
2026-10-14
Advisory published
2026-10-14
Advisory updated
2026-10-14

Who should care

Defenders responsible for Linux kernel security should assess exposure and apply patches to address the vulnerability. Defenders should prioritize verifying Linux kernel versions and applying patches to address the vulnerability. The vulnerability affects Linux kernel versions, and defenders should verify their kernel versions to determine if vulnerable. Defenders should review system configurations and ensure that the ALSA usb: 6fire driver is properly

Why it matters

The Linux kernel vulnerability in the ALSA usb: 6fire driver can lead to a Use-After-Free (UAF) when the URB is released asynchronously. Defenders should prioritize verifying Linux kernel versions and applying patches to address the vulnerability.

  • Verify Linux kernel versions to determine if vulnerable
  • Apply patches to address the vulnerability
  • Monitor system logs for potential exploitation attempts

Technical summary

The Linux kernel has a vulnerability in the ALSA usb: 6fire driver. The driver uses embedded URBs, which can lead to a Use-After-Free (UAF) when the URB is released asynchronously. This has been resolved by converting embedded URBs to properly allocated ones via usb_alloc_urb(). The vulnerability affects Linux kernel versions, and defenders should verify their kernel versions to determine if vulnerable. The fix involves converting embedded URBs to properly allocated ones, and defenders should prioritize verifying Linux kernel versions and applying patches to address the vulnerability.

Defensive priority

Defenders should prioritize verifying Linux kernel versions and applying patches to address the vulnerability.

Recommended defensive actions

  • Verify Linux kernel versions and apply patches to address the vulnerability
  • Review system configurations and ensure that the ALSA usb: 6fire driver is properly configured
  • Monitor system logs for potential exploitation attempts
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The vulnerability is caused by the use of embedded URBs in the ALSA usb: 6fire driver, which can lead to a UAF. The fix involves converting embedded URBs to properly allocated ones via usb_alloc_urb(). Defenders should verify Linux kernel versions to determine if vulnerable and apply patches to address the vulnerability. The vulnerability has been resolved, but defenders should still verify their kernel versions and apply patches to ensure their systems are secure. The source of the vulnerability is the Linux kernel, and the CVE has 5

Sources and references

Verified primary and authoritative sources

  • CVE-2026-98428 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-98428

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-98428 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-98428

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • ALSA: usb: 6fire: Avoid embedded URBs

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/98xxx/CVE-2026-98428.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/8b8559aeaba2e51cfee1779b2383b085991f7d81

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/52a43c2d57e774489ac3fbbac06ff02f19bd9a52

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/999f433c09e4668412bd68ca207ae2b4af863862

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/d181434549b3da668110a25d743848cce9897f4e

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/9fe49dbc023e82dfaee7b245997d820d01742a9a

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.