CVE-2026-63900 - Vulnerability Details

- USB: serial: keyspan: fix missing indat transfer sanity check

Description

In the Linux kernel, the following vulnerability has been resolved:

USB: serial: keyspan: fix missing indat transfer sanity check

Add the missing sanity check on the size of usa49wg indat transfers to
avoid parsing stale or uninitialised slab data.

Published: 2026-07-19

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

unaffected

Version	Status	Constraints
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< bd6c5fe59f374b63173afe5cf0ab38a9a370f2c1
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< e124120e89b61a967e40dee6b5e1ecafc45c09d9
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< 41d9673941eebdde62ee73848fcfe4ae1105c979
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< 0bde5431037a076ff3750da2165fd77a6f5ff058
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< 3759a40738b83bb61699c85f063202b514b94f77
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< ea2b792330b44b6d7ce671c3e1d59d0c121f7ed1
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< f7f566ad7519c7ca3bc9071350002940a2b0e22a
`0ca1268e109acf6d71507398cb95cab2e670b654`	affected	< ab8336a7e414f018430aa1af3a46944032f7ff96

Linux

affected

Version	Status	Constraints
`2.6.23`	affected	—
`0`	unaffected	< 2.6.23
`5.10.259`	unaffected	≤ 5.10.*
`5.15.210`	unaffected	≤ 5.15.*
`6.1.176`	unaffected	≤ 6.1.*
`6.6.143`	unaffected	≤ 6.6.*
`6.12.93`	unaffected	≤ 6.12.*
`6.18.35`	unaffected	≤ 6.18.*
`7.0.12`	unaffected	≤ 7.0.*
`7.1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[0ca1268e109acf6d71507398cb95cab2e670b654,bd6c5fe59f374b63173afe5cf0ab38a9a370f2c1)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,e124120e89b61a967e40dee6b5e1ecafc45c09d9)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,41d9673941eebdde62ee73848fcfe4ae1105c979)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,0bde5431037a076ff3750da2165fd77a6f5ff058)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,3759a40738b83bb61699c85f063202b514b94f77)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,ea2b792330b44b6d7ce671c3e1d59d0c121f7ed1)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,f7f566ad7519c7ca3bc9071350002940a2b0e22a)`	affected	code_commit	—
`[0ca1268e109acf6d71507398cb95cab2e670b654,ab8336a7e414f018430aa1af3a46944032f7ff96)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`2.6.23`	affected	semver	—
`[0,2.6.23)`	unaffected	semver	—
`[5.10.259,5.11.0)`	unaffected	semver	—
`[5.15.210,5.16.0)`	unaffected	semver	—
`[6.1.176,6.2.0)`	unaffected	semver	—
`[6.6.143,6.7.0)`	unaffected	semver	—
`[6.12.93,6.13.0)`	unaffected	semver	—
`[6.18.35,6.19.0)`	unaffected	semver	—
`[7.0.12,7.1.0)`	unaffected	semver	—
`[7.1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Ubuntu USN	USN-8593-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8603-1	Linux kernel (Azure) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

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.

The EPSS score is 0.00211.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/0bde5431037a076ff3750da2165fd77a6f5ff058
https://git.kernel.org/stable/c/3759a40738b83bb61699c85f063202b514b94f77
https://git.kernel.org/stable/c/41d9673941eebdde62ee73848fcfe4ae1105c979
https://git.kernel.org/stable/c/ab8336a7e414f018430aa1af3a46944032f7ff96
https://git.kernel.org/stable/c/bd6c5fe59f374b63173afe5cf0ab38a9a370f2c1
https://git.kernel.org/stable/c/e124120e89b61a967e40dee6b5e1ecafc45c09d9
https://git.kernel.org/stable/c/ea2b792330b44b6d7ce671c3e1d59d0c121f7ed1
https://git.kernel.org/stable/c/f7f566ad7519c7ca3bc9071350002940a2b0e22a
https://lore.kernel.org/linux-cve-announce/2026071943-CVE-2026-63900-a0cf@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-63900
https://www.cve.org/CVERecord?id=CVE-2026-63900

History

Sun, 26 Jul 2026 09:00:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-119 CWE-20

Wed, 22 Jul 2026 19:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-119 CWE-20

Wed, 22 Jul 2026 00:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-824
References		https://lore.kernel.org/linux-cve-announce/2026071943-CVE-2026-63900-a0cf@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-63900 https://www.cve.org/CVERecord?id=CVE-2026-63900
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Moderate`

Sun, 19 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan: fix missing indat transfer sanity check Add the missing sanity check on the size of usa49wg indat transfers to avoid parsing stale or uninitialised slab data.
Title		USB: serial: keyspan: fix missing indat transfer sanity check
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0bde5431037a076ff3750da2165fd77a6f5ff058 https://git.kernel.org/stable/c/3759a40738b83bb61699c85f063202b514b94f77 https://git.kernel.org/stable/c/41d9673941eebdde62ee73848fcfe4ae1105c979 https://git.kernel.org/stable/c/ab8336a7e414f018430aa1af3a46944032f7ff96 https://git.kernel.org/stable/c/bd6c5fe59f374b63173afe5cf0ab38a9a370f2c1 https://git.kernel.org/stable/c/e124120e89b61a967e40dee6b5e1ecafc45c09d9 https://git.kernel.org/stable/c/ea2b792330b44b6d7ce671c3e1d59d0c121f7ed1 https://git.kernel.org/stable/c/f7f566ad7519c7ca3bc9071350002940a2b0e22a

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-07-19T14:55:08.847Z

Updated: 2026-07-19T14:55:08.847Z

Reserved: 2026-07-19T07:54:57.019Z

Link: CVE-2026-63900

Vulnrichment

No data.

NVD

No data.

Redhat

Severity : Moderate

Publid Date: 2026-07-19T00:00:00Z

Links: CVE-2026-63900 - Bugzilla

OpenCVE Enrichment

Updated: 2026-07-26T08:45:17Z

Weaknesses

CWE-824

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Subscriptions

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