CVE-2020-7451

In FreeBSD 12.1-STABLE before r358739, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r358740, and 11.3-RELEASE before 11.3-RELEASE-p7, a TCP SYN-ACK or challenge TCP-ACK segment over IPv6 that is transmitted or retransmitted does not properly initialize the Traffic Class field disclosing one byte of kernel memory over the network.

Score

CVSS 3.1 5.3 Medium

Status

Modified - secteam@freebsd.org

Published

2020-04-28

Last modified

2024-08-04

Weaknesses

CWE-665, CWE-908

Affected products

• Freebsd (Freebsd)

References

• https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.asc