Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f
- https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538
- https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368
- https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898
- https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f
FAQ
What is CVE-2022-50865?
CVE-2022-50865 is a vulnerability with a CVSS score of 7.5 (HIGH). In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_...
How severe is CVE-2022-50865?
CVE-2022-50865 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-50865?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.