Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.9.328 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285Patch
- https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4dbPatch
- https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977fPatch
- https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bbPatch
- https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4aPatch
- https://git.kernel.org/stable/c/c904fe03c4bd1f356a58797d39e2a5d0ca15cefcPatch
- https://git.kernel.org/stable/c/e9ba4611ddf676194385506222cce7b0844e708ePatch
- https://git.kernel.org/stable/c/f74b4a41c5d7c9522469917e3072e55d435efd9ePatch
FAQ
What is CVE-2022-49948?
CVE-2022-49948 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 t...
How severe is CVE-2022-49948?
CVE-2022-49948 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49948?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.