CVE-2026-74676 - Vulnerability Details

- vt: add permission check for KDSKBMETA ioctl

Description

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

vt: add permission check for KDSKBMETA ioctl

KDSKBMETA modifies keyboard meta mode but lacks the !perm check that all
other keyboard setter ioctls in vt_k_ioctl() enforce, allowing a process
to change meta mode on a non-controlling console without authorization.

Published: 2026-08-22

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
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 9f8cbaf4b774694dcc292e60509762483ebfd9ae
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< ddc4a8303347114e945b9e6e81b81d77855f7358
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 1c5b67a1e2cb7d78dab321280f330b056e3bf437
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< d8ead5083b203d12b8319e7cb29cc6b8836e813f
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 4671c3b79e337bbae28c2d79023dc642df012bde
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< a1c31e026c93e378e297a8df8328983d3013a59f
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< 7bf32337a7103ccb686cbd240324bf26225ef2d6
`1da177e4c3f41524e886b7f1b8a0c1fc7321cac2`	affected	< a7ad0034453ba4c353f9b8f810ee2569de33d283

Linux

affected

Version	Status	Constraints
`2.6.12`	affected	—
`0`	unaffected	< 2.6.12
`5.10.265`	unaffected	≤ 5.10.*
`5.15.216`	unaffected	≤ 5.15.*
`6.1.183`	unaffected	≤ 6.1.*
`6.6.152`	unaffected	≤ 6.6.*
`6.12.104`	unaffected	≤ 6.12.*
`6.18.45`	unaffected	≤ 6.18.*
`7.1.9`	unaffected	≤ 7.1.*
`7.2`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,9f8cbaf4b774694dcc292e60509762483ebfd9ae)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ddc4a8303347114e945b9e6e81b81d77855f7358)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,1c5b67a1e2cb7d78dab321280f330b056e3bf437)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4671c3b79e337bbae28c2d79023dc642df012bde)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,d8ead5083b203d12b8319e7cb29cc6b8836e813f)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4671c3b79e337bbae28c2d79023dc642df012bde)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a1c31e026c93e378e297a8df8328983d3013a59f)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7bf32337a7103ccb686cbd240324bf26225ef2d6)`	affected	code_commit	—
`[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a7ad0034453ba4c353f9b8f810ee2569de33d283)`	affected	code_commit	—
`[0,5.10.265)`	affected	semver	—
`[0,5.15.216)`	affected	semver	—
`[0,6.1.183)`	affected	semver	—
`[0,6.6.152)`	affected	semver	—
`[0,6.12.104)`	affected	semver	—
`[0,6.18.45)`	affected	semver	—
`[0,7.1.9)`	affected	semver	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[0,5.10.*]`	unaffected	generic	—
`[0,5.15.*]`	unaffected	generic	—
`[0,6.1.*]`	unaffected	generic	—
`[0,6.6.*]`	unaffected	generic	—
`[0,6.12.*]`	unaffected	generic	—
`[0,6.18.*]`	unaffected	generic	—
`[0,7.1.*]`	unaffected	generic	—
`[0,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Debian DSA	DSA-6466-1	linux security update

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 0.00177.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/1c5b67a1e2cb7d78dab321280f330b056e3bf437
https://git.kernel.org/stable/c/4671c3b79e337bbae28c2d79023dc642df012bde
https://git.kernel.org/stable/c/7bf32337a7103ccb686cbd240324bf26225ef2d6
https://git.kernel.org/stable/c/9f8cbaf4b774694dcc292e60509762483ebfd9ae
https://git.kernel.org/stable/c/a1c31e026c93e378e297a8df8328983d3013a59f
https://git.kernel.org/stable/c/a7ad0034453ba4c353f9b8f810ee2569de33d283
https://git.kernel.org/stable/c/d8ead5083b203d12b8319e7cb29cc6b8836e813f
https://git.kernel.org/stable/c/ddc4a8303347114e945b9e6e81b81d77855f7358
https://lore.kernel.org/linux-cve-announce/2026082230-CVE-2026-74676-f091@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-74676
https://www.cve.org/CVERecord?id=CVE-2026-74676

History

Tue, 25 Aug 2026 12:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-1220
References		https://lore.kernel.org/linux-cve-announce/2026082230-CVE-2026-74676-f091@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-74676 https://www.cve.org/CVERecord?id=CVE-2026-74676
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 `Low`

Sat, 22 Aug 2026 18:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-284

Sat, 22 Aug 2026 15:45:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: vt: add permission check for KDSKBMETA ioctl KDSKBMETA modifies keyboard meta mode but lacks the !perm check that all other keyboard setter ioctls in vt_k_ioctl() enforce, allowing a process to change meta mode on a non-controlling console without authorization.
Title		vt: add permission check for KDSKBMETA ioctl
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/1c5b67a1e2cb7d78dab321280f330b056e3bf437 https://git.kernel.org/stable/c/4671c3b79e337bbae28c2d79023dc642df012bde https://git.kernel.org/stable/c/7bf32337a7103ccb686cbd240324bf26225ef2d6 https://git.kernel.org/stable/c/9f8cbaf4b774694dcc292e60509762483ebfd9ae https://git.kernel.org/stable/c/a1c31e026c93e378e297a8df8328983d3013a59f https://git.kernel.org/stable/c/a7ad0034453ba4c353f9b8f810ee2569de33d283 https://git.kernel.org/stable/c/d8ead5083b203d12b8319e7cb29cc6b8836e813f https://git.kernel.org/stable/c/ddc4a8303347114e945b9e6e81b81d77855f7358

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-08-22T15:32:45.256Z

Updated: 2026-08-25T05:23:18.083Z

Reserved: 2026-08-15T05:44:03.925Z

Link: CVE-2026-74676

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-22T16:16:41.710

Modified: 2026-08-25T06:18:50.527

Link: CVE-2026-74676

Redhat

Severity : Low

Publid Date: 2026-08-22T00:00:00Z

Links: CVE-2026-74676 - Bugzilla

OpenCVE Enrichment

Updated: 2026-08-25T14:00:17Z

Weaknesses

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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