CVE-2021-45485
High
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.
Exploit probability
3.6%
Published
December 25, 2021
Required by
Not available
Last source change
March 15, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2021-45485
View original source
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.
05 / REFERENCES
Further evidence
- 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