CVE-2026-80586 — mptcp: options: reset DSS fields in case of unexpected size
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…
Published: 2026-08-26 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7