Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2026-80965: ALSA: serial-u16550: 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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 1cb30691dc893aafcbc1e211e94764014c0f5d12, 41a952304cc8a308748e3f58462c879f2a9c4340, 487ede9b648fc0eb15866f408c41aac2c57f85d5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1cb30691dc893aafcbc1e211e94764014c0f5d12, 41a952304cc8a308748e3f58462c879f2a9c4340, 487ede9b648fc0eb15866f408c41aac2c57f85d5 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: serial-u16550: Check card index validity at probe serial-u16550 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
0.1% · 7th 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 · 0.1%

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-80965

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before 41a952304cc8a308748e3f58462c879f2a9c4340affected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before cc0f757d017f4271f137c77e130314bb23792347affected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before 1cb30691dc893aafcbc1e211e94764014c0f5d12affected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before 487ede9b648fc0eb15866f408c41aac2c57f85d5affected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before fbf3fb097e66fc1874e54ecc46d600d9325480d6affected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before 7555e83d7738e65dc83921e3c85bbdc081f08f2faffected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before 6d6fdb24fe2eaf6174fc502284c6e1dc5f7242baaffected · git
    • 9caf6b5908e1e3b10478e9201ca1be809145253f and later · before e0fb960b227fcdebe22e4f26c9486d60943c0424affected · 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-2026-80963Sep 11, 2026 · dm-stats: fix a crash if allocation of per-cpu data fails
    0Monitor
  • ← EarlierCVE-2026-80964Sep 11, 2026 · ALSA: virmidi: Check card index validity at probe
    0Monitor
  • Later →CVE-2026-80966Sep 11, 2026 · ALSA: portman2x4: Check card index validity at probe
    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 Linux1cb30691dc893aafcbc1e211e94764014c0f5d12Vendor (CNA)
Linux Linux41a952304cc8a308748e3f58462c879f2a9c4340Vendor (CNA)
Linux Linux487ede9b648fc0eb15866f408c41aac2c57f85d5Vendor (CNA)
Linux Linux6d6fdb24fe2eaf6174fc502284c6e1dc5f7242baVendor (CNA)
Linux Linux7555e83d7738e65dc83921e3c85bbdc081f08f2fVendor (CNA)
Linux Linuxcc0f757d017f4271f137c77e130314bb23792347Vendor (CNA)
Linux Linuxe0fb960b227fcdebe22e4f26c9486d60943c0424Vendor (CNA)
Linux Linuxfbf3fb097e66fc1874e54ecc46d600d9325480d6Vendor (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