Security Advisory

CVE-2023-53839

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-09 01:29:55

Last updated 2026-05-11 19:52:30

Assigner Linux

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp->dccps_mss_cache dccp_sendmsg() reads dp->dccps_mss_cache before locking the socket. Same thing in do_dccp_getsockopt(). Add READ_ONCE()/WRITE_ONCE() annotations, and change dccp_sendmsg() to check again dccps_mss_cache after socket is locked.

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