CVE-2022-49948

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: vt: Clear selection before changing the font When changing the console font with ioctl(KDFONTOP) the new font size can be bigger than the previous font. A previous selection may thus now be outside of the new screen size and thus trigger out-of-bounds accesses to graphics memory if the selection is removed in vc_do_resize(). Prevent such out-of-memory accesses by dropping the selection before the various con_font_set() console handlers are called.

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < c555cf04684fde39b5b0dd9fd80730030ee10c4a, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < e9ba4611ddf676194385506222cce7b0844e708e, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < f74b4a41c5d7c9522469917e3072e55d435efd9e, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < 1cf1930369c9dc428d827b60260c53271bff3285, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < 989201bb8c00b222235aff04e6200230d29dc7bb, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < 2535431ae967ad17585513649625fea7db28d4db, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < c904fe03c4bd1f356a58797d39e2a5d0ca15cefc, >= 009e39ae44f4191188aeb6dfbf661b771dbbe515 < 566f9c9f89337792070b5a6062dff448b3e7977f, >= e60f8fcce05042e8f8cea25ee81fecc1222114cf, >= 5812a9bc9d68a82c2cc839f88e6f7a05093ab39d, >= 863ad19fd654c485e3beec3575c4d74a1e74369e, >= dbc3fd44f957a39407e889287bf61fa0ef3ecc14, >= 0b2a0a58ad22f9d6dfc641bc5ec46057493f22a5, >= 9f2d48f0745f921040df91bfe8fa7f0339cd7497, >= 3425e397fb23cc2e8e6fb8f5b8226dcb447e84dd, >= eeae0a12a16650ff494d5faefa371cd9e7079575, >= 3.2.85 < 3.3, >= 3.10.105 < 3.11, >= 3.12.68 < 3.13, >= 3.16.40 < 3.17

Fixed versions

4.9.328, 4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE

CWE-125