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NVD / CVE Program· CNA Linux

CVE-2026-80969: ALSA: mpu401: Check card index validity at probe

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 26a25fb4ef4ba2a33069d489feb75a4c36899cca, 3a997371ac2957f11a033a4cec2930042dadb7e3, 4a3d6c22ca6b6c16e8055fb518aa87f5e043f754.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 26a25fb4ef4ba2a33069d489feb75a4c36899cca, 3a997371ac2957f11a033a4cec2930042dadb7e3, 4a3d6c22ca6b6c16e8055fb518aa87f5e043f754 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: mpu401: Check card index validity at probe mpu401 driver blindly trusts that the given devptr->id value is within the proper card index range at probe. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.

—No exploit Fix available
Published
Sep 11, 2026
Updated
Oct 19, 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?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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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

    • 2.6.16affected
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before 4a3d6c22ca6b6c16e8055fb518aa87f5e043f754affected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before d606c703d1e0c54996cb3db76a753157cb2a3c06affected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before 3a997371ac2957f11a033a4cec2930042dadb7e3affected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before 26a25fb4ef4ba2a33069d489feb75a4c36899ccaaffected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before 76b6bc38d0f310c0ae1b2a2ebabe2947d92c601aaffected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before cc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3eaaffected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before 8adda66edf795d4648f8e26f312e4414c535d25aaffected · git
    • b3fe95123f0db79dd0345d249c312823178c11f5 and later · before f7dcecb92ed192ff5fcf842918fb1aaea84b5bddaffected · git
    • before 2.6.16not 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 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-80967Sep 11, 2026 · ALSA: pcxhr: initialize mutexes before requesting threaded IRQ
    33Monitor
  • ← EarlierCVE-2026-80968Sep 11, 2026 · ALSA: mts64: Check card index validity at probe
    0Monitor
  • Later →CVE-2026-80970Sep 11, 2026 · ALSA: FCP: do not copy out an uninitialised init response
    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 Linux26a25fb4ef4ba2a33069d489feb75a4c36899ccaVendor (CNA)
Linux Linux3a997371ac2957f11a033a4cec2930042dadb7e3Vendor (CNA)
Linux Linux4a3d6c22ca6b6c16e8055fb518aa87f5e043f754Vendor (CNA)
Linux Linux76b6bc38d0f310c0ae1b2a2ebabe2947d92c601aVendor (CNA)
Linux Linux8adda66edf795d4648f8e26f312e4414c535d25aVendor (CNA)
Linux Linuxcc4215cc2a4b2a9cf8b1952bbe8d5bf925acb3eaVendor (CNA)
Linux Linuxd606c703d1e0c54996cb3db76a753157cb2a3c06Vendor (CNA)
Linux Linuxf7dcecb92ed192ff5fcf842918fb1aaea84b5bddVendor (CNA)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~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.

No dated events beyond publication.

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. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records