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CVE-2021-45402: linux kernel before 5.16 (exclusive), 5.16 · update rc1, 5.16 · update rc2 (+3 more affected versions); +1 more…

CVE-2021-45402. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.00416 (percentile 0.33909), scored 2026-10-08.

Affected technology

linux kernel · before 5.16 (exclusive)
linux

linux kernel · 5.16 · update rc1
linux

linux kernel · 5.16 · update rc2
linux

linux kernel · 5.16 · update rc3
linux

linux kernel · 5.16 · update rc4
linux

linux kernel · 5.16 · update rc5
linux

n/a · n/a
Vendor not specified by the source

Description’s affected range: through v5.16-rc5 did not properly update bounds while handling the mov32 instruction

Component: Not specified by the source

Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Local users can obtain potentially sensitive address information, aka a "pointer leak.". NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality impact as high; integrity and availability impact as none.

Published

CWE
CWE-668
CCR priority
22.1 /100 (P4)
CVSS 3.1
5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · NVD
EPSS
0.00416 · percentile 0.33909 · 2026-10-08
KEV
no

Provenance

Stable permalink: https://cybercodered.org/item/cve-cve-2021-45402.html