CVE-2022-49948

HIGH EPSS 11.0%
Published Jun 18, 20251y ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
11.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel* <4.9.328
linuxlinux_kernel*≥4.10  –  <4.14.293
linuxlinux_kernel*≥4.15  –  <4.19.258
linuxlinux_kernel*≥4.20  –  <5.4.213
linuxlinux_kernel*≥5.5  –  <5.10.142
linuxlinux_kernel*≥5.11  –  <5.15.66
linuxlinux_kernel*≥5.16  –  <5.19.8
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c904fe03c4bd1f356a58797d39e2a5d0ca15cefc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9ba4611ddf676194385506222cce7b0844e708e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f74b4a41c5d7c9522469917e3072e55d435efd9e
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c904fe03c4bd1f356a58797d39e2a5d0ca15cefc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9ba4611ddf676194385506222cce7b0844e708e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f74b4a41c5d7c9522469917e3072e55d435efd9e
    Patch