CVE-2022-49948vt: Clear selection before changing the font
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before c555cf04684fde39b5b0dd9fd80730030ee10c4a; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before e9ba4611ddf676194385506222cce7b0844e708e; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before f74b4a41c5d7c9522469917e3072e55d435efd9e; 009e39ae44f4191188aeb6dfbf661b771dbbe515 builds before 1cf1930369c9dc428d827b60260c53271bff3285; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before 989201bb8c00b222235aff04e6200230d29dc7bb; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before 2535431ae967ad17585513649625fea7db28d4db; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before c904fe03c4bd1f356a58797d39e2a5d0ca15cefc; from 009e39ae44f4191188aeb6dfbf661b771dbbe515 before 566f9c9f89337792070b5a6062dff448b3e7977f; and 16 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | before 4.9.328; from 4.10 before 4.14.293; from 4.15 before 4.19.258; from 4.20 before 5.4.213; from 5.5 before 5.10.142; from 5.11 before 5.15.66; from 5.16 before 5.19.8; 6.0; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4apatch
- https://git.kernel.org/stable/c/e9ba4611ddf676194385506222cce7b0844e708epatch
- https://git.kernel.org/stable/c/f74b4a41c5d7c9522469917e3072e55d435efd9epatch
- https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285patch
- https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bbpatch
- https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4dbpatch
- https://git.kernel.org/stable/c/c904fe03c4bd1f356a58797d39e2a5d0ca15cefcpatch
- https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977fpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.