CVE-2022-50865: falha de alta gravidade em Linux
tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
Publicada em · Atualizada em
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.5%
probabilidade de exploração
0.5%top 57% das CVEs
exploração observada
nãonenhuma fonte reporta
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Linux · LinuxCVEs relacionadas — Linux
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Referências
https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5fhttps://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f