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 CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < fbf3fb097e66fc1874e54ecc46d600d9325480d6
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 7555e83d7738e65dc83921e3c85bbdc081f08f2f
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < e0fb960b227fcdebe22e4f26c9486d60943c0424
0 affected < 6.12.109
0 affected < 6.18.50
0 affected < 7.2.4
Linux Linux affected
Version Status Constraints
6.12.109 unaffected ≤ 6.12.*
6.18.50 unaffected ≤ 6.18.*
7.2.4 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

No data.

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/6d6fdb24fe2eaf6174fc502284c6e1dc5f7242ba cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/7555e83d7738e65dc83921e3c85bbdc081f08f2f cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/e0fb960b227fcdebe22e4f26c9486d60943c0424 cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/fbf3fb097e66fc1874e54ecc46d600d9325480d6 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-80965 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-80965 cve-icon
History

Sat, 12 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-805
References
Metrics threat_severity

None

 cvssV3_1

{'score': 4.1, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description 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.
Title ALSA: serial-u16550: Check card index validity at probe
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:42:30.507Z

Reserved: 2026-08-26T14:34:25.810Z

Link: CVE-2026-80965

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:19:02.477

Modified: 2026-09-11T20:19:02.477

Link: CVE-2026-80965

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-11T19:42:30Z

Links: CVE-2026-80965 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses