CVE-2026-80587

A flaw was found in the Multipath TCP MPTCP implementation within the Linux kernel. This vulnerability arises from the kernel's handling of mutually exclusive MPTCP suboptions. A remote attacker could send specially crafted MPTCP suboptions that, when combined, are not expected by the kernel. Thi...

SUSE CVE-2026-80587

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

AZL-97817 CVE-2026-80587 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

CVE-2026-80587

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

UBUNTU-CVE-2026-80587

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

CVE-2026-80587

CVE-2026-80587 affects the Linux kernel MPTCP subsystem . The vulnerability arises because the kernel failed to enforce mutual-exclusion rules on incoming MPTCP suboptions, while the same restrictions were already applied on the outgoing side via mptcp_write_options. Per RFC 8684, certain subopti...

CVE-2026-80587 mptcp: avoid combining some incoming suboptions

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

CVE-2026-80587 mptcp: avoid combining some incoming suboptions

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the code doesn't expect some combinations to be present. That's speciall...

PT-2026-82202

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A remote peer can send a malformed Data Sequence Signal DSS with an incorrect size, followed by another DSS or Multipath TCP MPTCP Control MPC and Data. This sequence causes the first...

PT-2026-82203

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Multipath TCP MPTCP implementation where certain incoming suboptions are not properly restricted, allowing mutually exclusive suboptions to be combined. This...

Linux Distros Unpatched Vulnerability : CVE-2026-80586

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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. I...

Linux Distros Unpatched Vulnerability : CVE-2026-80587

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mptcp: avoid combining some incoming suboptions Some MPTCP suboptions are mutually exclusive according to the RFC8684, but also because in different places, the...

CVE-2026-32746

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC Set Local Characters suboption handler because addslc does not check whether the buffer is full...

Exploit for CVE-2026-32746

CVE-2026-32746 - telnetd LINEMODE SLC Buffer Overflow Pre-aut...

EUVD-2026-12065

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC Set Local Characters suboption handler because addslc does not check whether the buffer is full...

CVE-2026-32746

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC Set Local Characters suboption handler because addslc does not check whether the buffer is full...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21707)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-21707 advisory. - In the Linux kernel, the following vulnerability has been resolved: mptcp: consolidate suboption status MPTC...

curl: Telnet Suboption Buffer Pointer Underflow in lib/telnet.c leads to Out-of-Bounds Read

Summary A buffer pointer underflow vulnerability exists in curl's telnet protocol handler lib/telnet.c. When processing telnet suboptions in the CURLTSSE state, the code unconditionally decrements the suboption buffer pointer by 2 subpointer -= 2, even when the CURLSBACCUM macro skips writing due...

mptcp: consolidate suboption status

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SUSE CVE-2025-21707

In the Linux kernel, the following vulnerability has been resolved: mptcp: consolidate suboption status MPTCP maintains the received sub-options status is the bitmask carrying the received suboptions and in several bitfields carrying per suboption additional info. Zeroing the bitmask before parsi...