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CVE-2023-3161

Date: June 11, 2023

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.

Severity Score

Related Resources (6)

https://access.redhat.com/security/cve/CVE-2023-3161
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-3161
https://bugzilla.redhat.com/show_bug.cgi?id=2213485
https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be
https://nvd.nist.gov/vuln/detail/CVE-2023-3161
https://www.mend.io/vulnerability-database/CVE-2023-3161

Severity Score

Weakness Type (CWE)

Incorrect Calculation

CWE-682

Incorrect Bitwise Shift of Integer

CWE-1335

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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