CVE-2026-74676 PUBLISHED

vt: add permission check for KDSKBMETA ioctl

Assigner: Linux
Reserved: 15.08.2026 Published: 22.08.2026 Updated: 22.08.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 9f8cbaf4b774694dcc292e60509762483ebfd9ae (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to ddc4a8303347114e945b9e6e81b81d77855f7358 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 1c5b67a1e2cb7d78dab321280f330b056e3bf437 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to d8ead5083b203d12b8319e7cb29cc6b8836e813f (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 4671c3b79e337bbae28c2d79023dc642df012bde (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to a1c31e026c93e378e297a8df8328983d3013a59f (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 7bf32337a7103ccb686cbd240324bf26225ef2d6 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to a7ad0034453ba4c353f9b8f810ee2569de33d283 (excl.)
  • affected from 0 to 5.10.265 (excl.)
  • affected from 0 to 5.15.216 (excl.)
  • affected from 0 to 6.1.183 (excl.)
  • affected from 0 to 6.6.152 (excl.)
  • affected from 0 to 6.12.104 (excl.)
  • affected from 0 to 6.18.45 (excl.)
  • affected from 0 to 7.1.9 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 5.10.265 to 5.10.* (incl.)
  • unaffected from 5.15.216 to 5.15.* (incl.)
  • unaffected from 6.1.183 to 6.1.* (incl.)
  • unaffected from 6.6.152 to 6.6.* (incl.)
  • unaffected from 6.12.104 to 6.12.* (incl.)
  • unaffected from 6.18.45 to 6.18.* (incl.)
  • unaffected from 7.1.9 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References