Vulnerability in Linux Kernel
CVE-2021-45485
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.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.038 (90.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.038 · change: +0.002
Affected products
- Linux Kernel
- NetApp Aff A400
- NetApp Aff A400 Firmware
- NetApp All Flash Fabric-Attached Storage 8300
- NetApp All Flash Fabric-Attached Storage 8300 Firmware
- NetApp All Flash Fabric-Attached Storage 8700
- NetApp All Flash Fabric-Attached Storage 8700 Firmware
- NetApp Brocade Fabric Operating System Firmware
- NetApp E-Series Santricity OS Controller
- NetApp Fabric-Attached Storage 8300
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3 (Release Notes, Vendor Advisory)
- arxiv.org/pdf/2112.09604.pdf (Technical Description, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20220121-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45485?
- CVE-2021-45485 is a high-severity vulnerability in Linux Kernel, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2021-12-25.
- How severe is CVE-2021-45485?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-45485 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.