CVE-2022-50865
Published: Dec 30, 2025
Modified: May 11, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected c9c3321257e1b95be9b375f811fb250162af8d39 - < 9d04b4d0feee12bce6bfe37f30d8e953d3c30368affected c9c3321257e1b95be9b375f811fb250162af8d39 - < 4f23cb2be530785db284a685d1b1c30224d8a538affected c9c3321257e1b95be9b375f811fb250162af8d39 - < a85d39f14aa8a71e29cfb5eb5de02878a8779898affected c9c3321257e1b95be9b375f811fb250162af8d39 - < 28addf029417d53b1df062b4c87feb7bc033cb5faffected c9c3321257e1b95be9b375f811fb250162af8d39 - < ec791d8149ff60c40ad2074af3b92a39c916a03f |
Linux | Linux | affected 4.9unaffected 0 - < 4.9unaffected 5.4.278 - <= 5.4.*unaffected 5.10.153 - <= 5.10.*unaffected 5.15.77 - <= 5.15.*+2 more versions |
References
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