CVE-2022-50865
tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 30, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
c9c3321257e1b95be9b375f811fb250162af8d39 < 9d04b4d0feee12bce6bfe37f30d8e953d3c30368 c9c3321257e1b95be9b375f811fb250162af8d39 < 4f23cb2be530785db284a685d1b1c30224d8a538 c9c3321257e1b95be9b375f811fb250162af8d39 < a85d39f14aa8a71e29cfb5eb5de02878a8779898 c9c3321257e1b95be9b375f811fb250162af8d39 < 28addf029417d53b1df062b4c87feb7bc033cb5f c9c3321257e1b95be9b375f811fb250162af8d39 < ec791d8149ff60c40ad2074af3b92a39c916a03f
Linux / Linux
4.9
References
git.kernel.org: https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368 git.kernel.org: https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538 git.kernel.org: https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898 git.kernel.org: https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f git.kernel.org: https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f