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NVD / CVE Program· CNA Linux

CVE-2026-80966: ALSA: portman2x4: 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 0048994854f3e9c57b7a754de43ef8da5818d140, 0ce391090809d610647f424b9b1dc24aa2c546fd, 3690ef20469d5959378260e2752f2314a2572913.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0048994854f3e9c57b7a754de43ef8da5818d140, 0ce391090809d610647f424b9b1dc24aa2c546fd, 3690ef20469d5959378260e2752f2314a2572913 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: portman2x4: Check card index validity at probe Although portman2x4 driver has a check of the given devptr->id value, it doesn't check for a negative id, which is often given as "none" or such value when bound via sysfs. This may lead 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% · 12th 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%

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  • 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

    • 2.6.21affected
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 45ea0707298798678a60ff861b695aea049a5469affected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 5d7ac5e9ee5ba76b567ace13b46075caf79dcca0affected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 0048994854f3e9c57b7a754de43ef8da5818d140affected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 64898e9bd8b7b229efa8642b85b56b326a6ec3dcaffected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 0ce391090809d610647f424b9b1dc24aa2c546fdaffected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before d7ef7890e3e35b4ba09e76fc6b72047a1599a5e8affected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before e1ce8ad1009b1736b3044b3324350dcfdd516f42affected · git
    • 757e119bf52b014b3181eed97b01f87a245b8ff9 and later · before 3690ef20469d5959378260e2752f2314a2572913affected · git
    • before 2.6.21not 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-2026-80964Sep 11, 2026 · ALSA: virmidi: Check card index validity at probe
    0Monitor
  • ← EarlierCVE-2026-80965Sep 11, 2026 · ALSA: serial-u16550: Check card index validity at probe
    0Monitor
  • Later →CVE-2026-80967Sep 11, 2026 · ALSA: pcxhr: initialize mutexes before requesting threaded IRQ
    33Monitor

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 Linux0048994854f3e9c57b7a754de43ef8da5818d140Vendor (CNA)
Linux Linux0ce391090809d610647f424b9b1dc24aa2c546fdVendor (CNA)
Linux Linux3690ef20469d5959378260e2752f2314a2572913Vendor (CNA)
Linux Linux45ea0707298798678a60ff861b695aea049a5469Vendor (CNA)
Linux Linux5d7ac5e9ee5ba76b567ace13b46075caf79dcca0Vendor (CNA)
Linux Linux64898e9bd8b7b229efa8642b85b56b326a6ec3dcVendor (CNA)
Linux Linuxd7ef7890e3e35b4ba09e76fc6b72047a1599a5e8Vendor (CNA)
Linux Linuxe1ce8ad1009b1736b3044b3324350dcfdd516f42Vendor (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✗ → ✓

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References

Show all references (7 more)

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

All records