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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c9c3321257e1b95be9b375f811fb250162af8d39 to < 9d04b4d0feee12bce6bfe37f30d8e953d3c30368affectedc9c3321257e1b95be9b375f811fb250162af8d39 to < 4f23cb2be530785db284a685d1b1c30224d8a538affectedc9c3321257e1b95be9b375f811fb250162af8d39 to < a85d39f14aa8a71e29cfb5eb5de02878a8779898affectedc9c3321257e1b95be9b375f811fb250162af8d39 to < 28addf029417d53b1df062b4c87feb7bc033cb5faffectedc9c3321257e1b95be9b375f811fb250162af8d39 to < ec791d8149ff60c40ad2074af3b92a39c916a03faffected
Linux Linux
Default version status: affected
4.9affected0 to < 4.9unaffected5.4.278 to ≤ 5.4.*unaffected5.10.153 to ≤ 5.10.*unaffected5.15.77 to ≤ 5.15.*unaffected6.0.7 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368 ↗
- https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538 ↗
- https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898 ↗
- https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f ↗
- https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f ↗