CVE-2021-45485

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.28%
Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3 release notes vendor advisory
https://arxiv.org/pdf/2112.09604.pdf third party advisory technical description
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99 patch vendor advisory
https://www.oracle.com/security-alerts/cpujul2022.html third party advisory patch
https://security.netapp.com/advisory/ntap-20220121-0001/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-45485?
CVE-2021-45485 has been scored as a high severity vulnerability.
How to fix CVE-2021-45485?
To fix CVE-2021-45485, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-45485 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-45485 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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