What’s Vulnerable › Vulnerabilities

CVE-2021-45485

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-25 · updated 2026-08-05
• Weakness: CWE-327

Description

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.

Affected products

• Linux kernel: before 4.4.276; from 4.5 before 4.9.276; from 4.10 before 4.14.240; from 4.15 before 4.19.198; from 4.20 before 5.4.133; from 5.5 before 5.10.51 — fixed in 4.14.240, 4.19.198, 4.4.276, 4.9.276, 5.10.51, 5.12.18
• NetApp Aff A400 Firmware: all versions
• NetApp All Flash Fabric-Attached Storage 8300 Firmware: all versions
• NetApp All Flash Fabric-Attached Storage 8700 Firmware: all versions
• NetApp Brocade Fabric Operating System Firmware: all versions
• E-Series SANtricity OS Controller Software 11.x: all versions
• NetApp Fabric-Attached Storage 8300 Firmware: all versions
• NetApp Fabric-Attached Storage 8700 Firmware: all versions
• NetApp Fabric-Attached Storage A400 Firmware: all versions
• NetApp H300E Firmware: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500E Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H610C Firmware: all versions
• NetApp H610S Firmware: all versions
• NetApp H615C Firmware: all versions
• NetApp H700E Firmware: all versions
• NetApp H700S Firmware: all versions
• NetApp Hci Compute Node Firmware: all versions
• NetApp Solidfire, Enterprise Sds & Hci Storage Node: all versions
• NetApp Solidfire & Hci Management Node: all versions
• Oracle Communications Cloud Native Core Binding Support Function: 22.1.3
• Oracle Communications Cloud Native Core Network Exposure Function: 22.1.1
• Oracle Communications Cloud Native Core Policy: 22.2.0

How to fix

Upgrade to a fixed version: Linux kernel 4.14.240, 4.19.198, 4.4.276, 4.9.276. Check the vendor advisory for mitigations.

References

• https://arxiv.org/pdf/2112.09604.pdf
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99
• https://security.netapp.com/advisory/ntap-20220121-0001/
• https://www.oracle.com/security-alerts/cpujul2022.html
• https://arxiv.org/pdf/2112.09604.pdf
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99
• https://security.netapp.com/advisory/ntap-20220121-0001/
• https://www.oracle.com/security-alerts/cpujul2022.html

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