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.
References 8
https://git.kernel.org/stable/c/1c5b67a1e2cb7d78dab321280f330b056e3bf437
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4671c3b79e337bbae28c2d79023dc642df012bde
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7bf32337a7103ccb686cbd240324bf26225ef2d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9f8cbaf4b774694dcc292e60509762483ebfd9ae
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a1c31e026c93e378e297a8df8328983d3013a59f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a7ad0034453ba4c353f9b8f810ee2569de33d283
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d8ead5083b203d12b8319e7cb29cc6b8836e813f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ddc4a8303347114e945b9e6e81b81d77855f7358
416baaa9-dc9f-4396-8d5f-8c081fb06d67