CVE-2022-49948

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Source
https://cve.org/CVERecord?id=CVE-2022-49948
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49948.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49948
Downstream
Related
Published
2025-06-18T11:00:12.364Z
Modified
2026-03-20T12:24:48.145276Z
Summary
vt: Clear selection before changing the font
Details

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 vcdoresize().

Prevent such out-of-memory accesses by dropping the selection before the various confontset() console handlers are called.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49948.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
009e39ae44f4191188aeb6dfbf661b771dbbe515
Fixed
c555cf04684fde39b5b0dd9fd80730030ee10c4a
Fixed
e9ba4611ddf676194385506222cce7b0844e708e
Fixed
f74b4a41c5d7c9522469917e3072e55d435efd9e
Fixed
1cf1930369c9dc428d827b60260c53271bff3285
Fixed
989201bb8c00b222235aff04e6200230d29dc7bb
Fixed
2535431ae967ad17585513649625fea7db28d4db
Fixed
c904fe03c4bd1f356a58797d39e2a5d0ca15cefc
Fixed
566f9c9f89337792070b5a6062dff448b3e7977f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
e60f8fcce05042e8f8cea25ee81fecc1222114cf
Last affected
5812a9bc9d68a82c2cc839f88e6f7a05093ab39d
Last affected
863ad19fd654c485e3beec3575c4d74a1e74369e
Last affected
dbc3fd44f957a39407e889287bf61fa0ef3ecc14
Last affected
0b2a0a58ad22f9d6dfc641bc5ec46057493f22a5
Last affected
9f2d48f0745f921040df91bfe8fa7f0339cd7497
Last affected
3425e397fb23cc2e8e6fb8f5b8226dcb447e84dd
Last affected
eeae0a12a16650ff494d5faefa371cd9e7079575

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49948.json"