CVE-2026-80586
mptcp: options: reset DSS fields in case of unexpected size
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 26, 2026 |
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Affected Versions
Linux / Linux
648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 15e35fdad7a5576bf3f1c8d688877aeb5d1b506b 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < b1256090816ec46011601e084be580731df58fc7 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 192878df582c51d440bf7b91a15f297f29f2b596 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 26dac5c9ffb20812b475fdf253eb04fab99cff3b 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 4e80eff5c1c893aca2ac1d202f0b256d2e52ecde 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 1fade1b2ac5b1a4948e538fae7313bea57b5ac36 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 27ed642a4e7e4b5df4b8522c72c457a67e052493 648ef4b88673dadb8463bf0d4b10fbf33d55def8 < 35772b4981f38ba8059372cde8753e8e477e98ec
Linux / Linux
5.6
References
git.kernel.org: https://git.kernel.org/stable/c/15e35fdad7a5576bf3f1c8d688877aeb5d1b506b git.kernel.org: https://git.kernel.org/stable/c/b1256090816ec46011601e084be580731df58fc7 git.kernel.org: https://git.kernel.org/stable/c/192878df582c51d440bf7b91a15f297f29f2b596 git.kernel.org: https://git.kernel.org/stable/c/26dac5c9ffb20812b475fdf253eb04fab99cff3b git.kernel.org: https://git.kernel.org/stable/c/4e80eff5c1c893aca2ac1d202f0b256d2e52ecde git.kernel.org: https://git.kernel.org/stable/c/1fade1b2ac5b1a4948e538fae7313bea57b5ac36 git.kernel.org: https://git.kernel.org/stable/c/27ed642a4e7e4b5df4b8522c72c457a67e052493 git.kernel.org: https://git.kernel.org/stable/c/35772b4981f38ba8059372cde8753e8e477e98ec