The vulnerability of the __mptcp_close_ssk() function in the net/mptcp/protocol.c module of the MPTCP protocol implementation in the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the mptcpclosessk function in the net/mptcp/protocol.c module of the MPTCP protocol implementation in the Linux operating system is related to the reutilization of previously released memory. Exploiting this vulnerability could allow an attacker to compromise the...

The vulnerability of the mptcp_subflow_queue_clean() function in the net/mptcp/subflow.c module of the MPTCP protocol implementation in Linux kernel allows a attacker to cause a service failure.

The vulnerability of the mptcpsubflowqueueclean function in the net/mptcp/subflow.c module of the MPTCP protocol implementation in the Linux operating system is related to improper cleaning when handling exceptions. Exploiting this vulnerability can allow a attacker to cause service failures...

DEBIAN-CVE-2025-21938

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

CVE-2025-21938

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

UBUNTU-CVE-2025-21938

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

CVE-2025-21938

CVE-2025-21938 refers to a Linux kernel vulnerability in MPTCP where, when multiple connection requests create an implicit MPTCP endpoint in parallel, concurrent mptcp_pm_nl_get_local_id calls may delete the address entry created by a previous caller. The root cause is risky deletes via synchroni...

CVE-2025-21938 mptcp: fix 'scheduling while atomic' in mptcp_pm_nl_append_new_local_addr

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

CVE-2025-21938 mptcp: fix 'scheduling while atomic' in mptcp_pm_nl_append_new_local_addr

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

CVE-2025-21938: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic' in mptcppmnlappendnewlocaladdr If multiple connection requests attempt to create an implicit mptcp endpoint in parallel, more than one caller may end up in mptcppmnlappendnewlocaladdr because...

Security update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506001017 fixes one issue. The following security issue was fixed: CVE-2024-57882: mptcp: fix TCP options overflow. bsc1235916. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper...

PT-2025-18399

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability has been resolved in the Linux kernel related to the MPTCP protocol. The issue occurs when the kernel panics in 'mptcp can accept new subflow' due to a NULL pointer...

Security update for the Linux Kernel RT (Live Patch 7 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506001023 fixes one issue. The following security issue was fixed: CVE-2024-57882: mptcp: fix TCP options overflow. bsc1235916. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper...

SUSE-SU-2025:20164-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2023-52778: mptcp: deal with large GSO size bsc1224948. - CVE-2023-52920: bpf: support non-r10 register spill/fill to/from stack in precision tracking...

DEBIAN-CVE-2025-21875

In the Linux kernel, the following vulnerability has been resolved: mptcp: always handle address removal under msk socket lock Syzkaller reported a lockdep splat in the PM control path: WARNING: CPU: 0 PID: 6693 at ./include/net/sock.h:1711 sockownedbyme include/net/sock.h:1711 inline WARNING: CP...

CVE-2025-21875

In the Linux kernel, the following vulnerability has been resolved: mptcp: always handle address removal under msk socket lock Syzkaller reported a lockdep splat in the PM control path: WARNING: CPU: 0 PID: 6693 at ./include/net/sock.h:1711 sockownedbyme include/net/sock.h:1711 inline WARNING: CP...

CVE-2025-21875

In the Linux kernel, the following vulnerability has been resolved: mptcp: always handle address removal under msk socket lock Syzkaller reported a lockdep splat in the PM control path: WARNING: CPU: 0 PID: 6693 at ./include/net/sock.h:1711 sockownedbyme include/net/sock.h:1711 inline WARNING: CP...

CVE-2025-21875 mptcp: always handle address removal under msk socket lock

In the Linux kernel, the following vulnerability has been resolved: mptcp: always handle address removal under msk socket lock Syzkaller reported a lockdep splat in the PM control path: WARNING: CPU: 0 PID: 6693 at ./include/net/sock.h:1711 sockownedbyme include/net/sock.h:1711 inline WARNING: CP...

CVE-2025-21875

CVE-2025-21875 affects the Linux kernel MPTCP PM path. Connected docs describe a lock-order flaw where the PM can send RM_ADDR notifications over a msk socket without first acquiring the msk socket lock, allowing concurrent access to the PM removal/address path. The bug path follows PM removal of...

Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2023-52778: mptcp: deal with large GSO size bsc1224948. CVE-2023-52920: bpf: support non-r10 register spill/fill to/from stack in precision tracking...

The vulnerability of the mptcp_stream_connect() function in the mptcp component of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the mptcpstreamconnect function in the mptcp component of the Linux operating system’s kernel is related to the use of an uninitialized resource. Exploiting this vulnerability could allow a attacker to cause a service failure...