Vulnerability record · CVE-2021-45485 · published 25 December 2021

CVE-2021-45485: Linux kernel broken cryptographic algorithm vulnerability

Linux · Linux Kernel

In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.

7.5 CVSS 3.1 High EPSS 3.6% · top 10.8% CWE-327 · Broken cryptographic algorithm

7.5CVSS 3.1 base score, v2 5.0

3.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

26Affected product versions listed by NVD

10References

5 Aug 2026Last modified by NVD

Description

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

Affected products

26 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux NAff A400 Firmware Netapp NAll Flash Fabric Attached Storage 8300 Firmware Netapp NAll Flash Fabric Attached Storage 8700 Firmware Netapp NBrocade Fabric Operating System Firmware Netapp NE Series Santricity Os Controller Netapp NFabric Attached Storage 8300 Firmware Netapp NFabric Attached Storage 8700 Firmware Netapp NFabric Attached Storage A400 Firmware Netapp NH300e Firmware Netapp NH300s Firmware Netapp NH410c Firmware Netapp NH410s Firmware Netapp NH500e Firmware Netapp NH500s Firmware Netapp NH610c Firmware Netapp NH610s Firmware Netapp NH615c Firmware Netapp NH700e Firmware Netapp NH700s Firmware Netapp NHci Compute Node Firmware Netapp NSolidfire \& Hci Management Node Netapp NSolidfire\, Enterprise Sds \& Hci Storage Node Netapp

Communications Cloud Native Core Binding Support Function Oracle

Communications Cloud Native Core Network Exposure Function Oracle

Communications Cloud Native Core Policy Oracle

References

Link	Tags
https://arxiv.org/pdf/2112.09604.pdf	Technical DescriptionThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99	PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20220121-0001/	Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	PatchThird Party Advisory
https://arxiv.org/pdf/2112.09604.pdf	Technical DescriptionThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99	PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20220121-0001/	Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	PatchThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-45485), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.