CVE-2023-3161 — MEDIUM (5.5)

Vulnerability Description

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.

CVSS Score

5.5

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	< 6.2
Fedoraproject	Fedora	38
Redhat	Enterprise Linux	8.0

Related Weaknesses (CWE)

CWE-1335 CWE-682

References

https://bugzilla.redhat.com/show_bug.cgi?id=2213485Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0bPatch
https://bugzilla.redhat.com/show_bug.cgi?id=2213485Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0bPatch

FAQ

What is CVE-2023-3161?

CVE-2023-3161 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-...

How severe is CVE-2023-3161?

CVE-2023-3161 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-3161?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux.