CVE-2021-47591

In the Linux kernel, the following vulnerability has been resolved: mptcp: remove tcp ulp setsockopt support TCPULP setsockopt cannot be used for mptcp because its already used internally to plumb subflow tcp sockets to the mptcp layer. syzbot managed to trigger a crash for mptcp connections that...

CVE-2021-47590

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix deadlock in mptcppushpending mptcppushpending may call mptcpflushjoinlist with subflow socket lock held. If such call hits mptcpsockoptsyncall then subsequently mptcpsockoptsync could try to lock the subflow socket for...

CVE-2021-47593

In the Linux kernel, the following vulnerability has been resolved: mptcp: clear 'kern' flag from fallback sockets The mptcp ULP extension relies on sk-sksockkern being set correctly: It prevents setsockoptfd, IPPROTOTCP, TCPULP, "mptcp", 6; from working for plain tcp sockets any userspace-expose...

CVE-2021-47594

In the Linux kernel, the following vulnerability has been resolved: mptcp: never allow the PM to close a listener subflow Currently, when deleting an endpoint the netlink PM treverses all the local MPTCP sockets, regardless of their status. If an MPTCP listener socket is bound to the IP matching...

CVE-2021-47591

In the Linux kernel, the following vulnerability has been resolved: mptcp: remove tcp ulp setsockopt support TCPULP setsockopt cannot be used for mptcp because its already used internally to plumb subflow tcp sockets to the mptcp layer. syzbot managed to trigger a crash for mptcp connections that...

CVE-2021-47594 mptcp: never allow the PM to close a listener subflow

In the Linux kernel, the following vulnerability has been resolved: mptcp: never allow the PM to close a listener subflow Currently, when deleting an endpoint the netlink PM treverses all the local MPTCP sockets, regardless of their status. If an MPTCP listener socket is bound to the IP matching...

CVE-2021-47593 mptcp: clear 'kern' flag from fallback sockets

In the Linux kernel, the following vulnerability has been resolved: mptcp: clear 'kern' flag from fallback sockets The mptcp ULP extension relies on sk-sksockkern being set correctly: It prevents setsockoptfd, IPPROTOTCP, TCPULP, "mptcp", 6; from working for plain tcp sockets any userspace-expose...

CVE-2021-47593

CVE-2021-47593 concerns the Linux kernel mptcp ULP, where the kernel flag handling for fallback sockets could allow a plain TCP subflow to retain kernel ownership and trigger a kernel crash. The issue occurs when accept() returns a plain TCP sk that is still tagged as kernel, allowing setsockopt ...

CVE-2021-47594 mptcp: never allow the PM to close a listener subflow

In the Linux kernel, the following vulnerability has been resolved: mptcp: never allow the PM to close a listener subflow Currently, when deleting an endpoint the netlink PM treverses all the local MPTCP sockets, regardless of their status. If an MPTCP listener socket is bound to the IP matching...

CVE-2021-47593 mptcp: clear 'kern' flag from fallback sockets

In the Linux kernel, the following vulnerability has been resolved: mptcp: clear 'kern' flag from fallback sockets The mptcp ULP extension relies on sk-sksockkern being set correctly: It prevents setsockoptfd, IPPROTOTCP, TCPULP, "mptcp", 6; from working for plain tcp sockets any userspace-expose...

CVE-2021-47594

The CVE-2021-47594 entry is a legitimate Linux kernel vulnerability. It describes that the PM could close MPTCP listener subflows when deleting an endpoint, potentially affecting listener sockets bound to the endpoint IP and risking a NULL pointer dereference reported by syzbot. The connected doc...

CVE-2021-47591 mptcp: remove tcp ulp setsockopt support

In the Linux kernel, the following vulnerability has been resolved: mptcp: remove tcp ulp setsockopt support TCPULP setsockopt cannot be used for mptcp because its already used internally to plumb subflow tcp sockets to the mptcp layer. syzbot managed to trigger a crash for mptcp connections that...

CVE-2021-47590 mptcp: fix deadlock in __mptcp_push_pending()

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix deadlock in mptcppushpending mptcppushpending may call mptcpflushjoinlist with subflow socket lock held. If such call hits mptcpsockoptsyncall then subsequently mptcpsockoptsync could try to lock the subflow socket for...

CVE-2021-47591

CVE-2021-47591 affects the Linux kernel. The vulnerability arises from the TCP_ULP setsockopt mechanism, which is no longer supported for MPTCP as it is already used internally to connect subflow sockets to the MPTCP layer. In syzbot testing, a crash (KASAN null dereference) was observed on mptcp...

CVE-2021-47591 mptcp: remove tcp ulp setsockopt support

In the Linux kernel, the following vulnerability has been resolved: mptcp: remove tcp ulp setsockopt support TCPULP setsockopt cannot be used for mptcp because its already used internally to plumb subflow tcp sockets to the mptcp layer. syzbot managed to trigger a crash for mptcp connections that...

CVE-2021-47590

CVE-2021-47590 affects the Linux kernel MPTCP path. The deadlock occurs when __mptcp_push_pending() calls mptcp_flush_join_list() while holding the subflow socket lock, enabling __mptcp_sockopt_sync() to lock the subflow socket. The fix uses __mptcp_flush_join_list() (not plain mptcp_flush_join_l...

Medium: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netlink: annotate lockless accesses to nlk-maxrecvmsglen CVE-2023-53824 In the Linux kernel, the following vulnerability has been resolved: md: fix kmemleak of rdev-serial CVE-2024-26900 In the Linux kernel, the...

CVE-2024-36889

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure sndnxt is properly initialized on connect Christoph reported a splat hinting at a corrupted snduna: WARNING: CPU: 1 PID: 38 at net/mptcp/protocol.c:1005 mptcpcleanuna+0x4b3/0x620 net/mptcp/protocol.c:1005 Modules...

CVE-2024-36889

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure sndnxt is properly initialized on connect Christoph reported a splat hinting at a corrupted snduna: WARNING: CPU: 1 PID: 38 at net/mptcp/protocol.c:1005 mptcpcleanuna+0x4b3/0x620 net/mptcp/protocol.c:1005 Modules...

CVE-2024-36889

In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure sndnxt is properly initialized on connect Christoph reported a splat hinting at a corrupted snduna: WARNING: CPU: 1 PID: 38 at net/mptcp/protocol.c:1005 mptcpcleanuna+0x4b3/0x620 net/mptcp/protocol.c:1005 Modules...