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CVE-2026-46227 is a race-related use-after-free and type-confusion vulnerability in the Linux kernel SCTP implementation. The SCTP_SENDALL path in sctp_sendmsg() caches the next association-list entry before calling sctp_sendmsg_to_asoc(), which can release the socket lock while waiting for send-buffer space. During this interval, concurrent association migration or destruction can invalidate the cached cursor. Although the current association is revalidated after the lock is reacquired, the next-entry cursor is not. Resuming iteration can consequently dereference a freed association or interpret another endpoint's list head as an association structure. Both conditions are reachable without effective Linux capabilities, and the type-confusion path permits a controlled indirect function call through outqueue.sched->init_sid.
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A Linux kernel SCTP vulnerability affecting Red Hat Enterprise Linux 9. The fix revalidates the list cursor after sctp_sendmsg_to_asoc() in the SCTP_SENDALL path. Kernel live-patch updates are available under RHSA-2026:59145; specific exploitation conditions and consequences are not described.
A Linux kernel SCTP race condition leaves a cached list cursor unvalidated after the socket lock is temporarily released. This can cause use-after-free or type confusion, with the type-confusion path permitting a controlled indirect call. The issue is reachable without effective capabilities and has a CVSS v3 base score of 7.0, with local access and high attack complexity. The listed fix is to update the linux package and related packages to version 6.1.176-1 or later.
A vulnerability addressed in Huawei EulerOS UVP 2.10.1 kernel-related packages.
A Linux kernel vulnerability in SCTP handling, fixed in the Red Hat kpatch live patch update RHSA-2026:59149.
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