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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98428: ALSA: usb: 6fire: Avoid embedded URBs

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a, 52a43c2d57e774489ac3fbbac06ff02f19bd9a52, 8b8559aeaba2e51cfee1779b2383b085991f7d81.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a, 52a43c2d57e774489ac3fbbac06ff02f19bd9a52, 8b8559aeaba2e51cfee1779b2383b085991f7d81 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: 6fire: Avoid embedded URBs The USB 6fire driver uses URBs embedded in different structs for PCM, MIDI and communication, and this is basically a buggy implementation nowadays; since a URB is managed with a refcount, this may lead to a UAF when the URB is released asynchronously. For addressing the problem, this patch converts those embedded URBs to ones that are properly allocated via usb_alloc_urb(). The pcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence it's found in urb.iso_frame_desc[] instead. The conversions are rather straightforward; each embedded struct urb is changed to a pointer, and its callers are updated accordingly. The resource for those structs are released in the common destructor functions (usb6fire_comm_free(), etc), which are called at both the init error path and the disconnect. No functional changes, only compile-tested.

—No exploit Fix available
Published
Oct 14, 2026
Updated
Oct 26, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.39affected
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7aaffected · git
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before 8b8559aeaba2e51cfee1779b2383b085991f7d81affected · git
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before 52a43c2d57e774489ac3fbbac06ff02f19bd9a52affected · git
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before 999f433c09e4668412bd68ca207ae2b4af863862affected · git
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before d181434549b3da668110a25d743848cce9897f4eaffected · git
    • c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 and later · before 9fe49dbc023e82dfaee7b245997d820d01742a9aaffected · git
    • before 2.6.39not affected · semver
    • 6.1.189 and later · up to and including 6.1.*not affected · semver
    • 6.6.158 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98426Oct 14, 2026 · wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path
    0Monitor
  • ← EarlierCVE-2026-98427Oct 14, 2026 · net/sched: codel: bound the dropping loop per dequeue call
    0Monitor
  • Later →CVE-2026-98429Oct 14, 2026 · RDMA/efa: Keep EQ resources alive while IRQ is registered
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3ef9093d83ffecb8e5f6c9d5769a52d39df74f7aVendor (CNA)
Linux Linux52a43c2d57e774489ac3fbbac06ff02f19bd9a52Vendor (CNA)
Linux Linux8b8559aeaba2e51cfee1779b2383b085991f7d81Vendor (CNA)
Linux Linux999f433c09e4668412bd68ca207ae2b4af863862Vendor (CNA)
Linux Linux9fe49dbc023e82dfaee7b245997d820d01742a9aVendor (CNA)
Linux Linuxd181434549b3da668110a25d743848cce9897f4eVendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayOct 30, 2026+16 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records