mptcp: close TOCTOU race while computing rcv_wnd
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.2epss 0.3%
probabilidade de exploração
0.3%top 75% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
mptcp: close TOCTOU race while computing rcv_wnd
The MPTCP output path access locklessly the MPTCP-level ack_seq
in multiple times, using possibly different values for the data_ack
in the DSS option and to compute the announced rcv wnd for the same
packet.
Refactor the cote to avoid inconsistencies which may confuse the
peer. Also ensure that the MPTCP level rcv wnd is updated only when
the egress packet actually contains a DSS ack.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/301a33fd590c408a05c5df800e0cc1e6a8a2f8f8https://git.kernel.org/stable/c/3b8cbba7c0ed31189c89f90be247b8973ffa79efhttps://git.kernel.org/stable/c/68364963e5baf03f16b4420292291f75c8f66497https://git.kernel.org/stable/c/8ab24fdebc369c0dfb90f82c1650b1e66662bb45https://git.kernel.org/stable/c/8f4f0a157e8436a05bf8c3670b24dbc258911c43https://git.kernel.org/stable/c/907ac6b1658e0277f979fcdfae2a753b495c1510https://git.kernel.org/stable/c/c4f4cf60797974873dbc8e100144682a6f2f861f