CVE-2022-50865: fallo de gravedad alta en Linux
tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
Publicada el · Actualizada el
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.5%
probabilidad de explotación
0.5%top 57% de las CVE
explotación observada
noninguna fuente lo 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
Productos afectados
Linux · LinuxCVEs relacionadas — Linux
En el mismo producto, de las más peligrosas a las menos.
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Referencias
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