CVE-2026-74676
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedAug 22, 2026
First seenAug 22, 2026
How to fix
Update
- Linux Linux9f8cbaf4b774694dcc292e60509762483ebfd9ae, ddc4a8303347114e945b9e6e81b81d77855f7358, 1c5b67a1e2cb7d78dab321280f330b056e3bf437, d8ead5083b203d12b8319e7cb29cc6b8836e813f, 4671c3b79e337bbae28c2d79023dc642df012bde, a1c31e026c93e378e297a8df8328983d3013a59f, 7bf32337a7103ccb686cbd240324bf26225ef2d6, a7ad0034453ba4c353f9b8f810ee2569de33d283 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 9f8cbaf4b774694dcc292e60509762483ebfd9ae, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < ddc4a8303347114e945b9e6e81b81d77855f7358, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 1c5b67a1e2cb7d78dab321280f330b056e3bf437, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < d8ead5083b203d12b8319e7cb29cc6b8836e813f, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 4671c3b79e337bbae28c2d79023dc642df012bde, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < a1c31e026c93e378e297a8df8328983d3013a59f, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 7bf32337a7103ccb686cbd240324bf26225ef2d6, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < a7ad0034453ba4c353f9b8f810ee2569de33d283, 2.6.12 | 9f8cbaf4b774694dcc292e60509762483ebfd9ae, ddc4a8303347114e945b9e6e81b81d77855f7358, 1c5b67a1e2cb7d78dab321280f330b056e3bf437, d8ead5083b203d12b8319e7cb29cc6b8836e813f, 4671c3b79e337bbae28c2d79023dc642df012bde, a1c31e026c93e378e297a8df8328983d3013a59f, 7bf32337a7103ccb686cbd240324bf26225ef2d6, a7ad0034453ba4c353f9b8f810ee2569de33d283 |
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