CVE-2022-49948

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.

CVSS 3.1

7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2025-06-18

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285
• https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4db
• https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977f
• https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bb
• https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4a

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