{"schema_version":"1.7.5","id":"CVE-2019-3837","published":"2019-04-11T15:29:00.447Z","modified":"2026-03-14T09:38:10.753078Z","related":["SUSE-SU-2023:0416-1"],"details":"It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. So an unprivileged multi-threaded userspace application calling recvmsg() for the same network socket in parallel executed on ioatdma-enabled hardware with net_dma enabled can leak the memory, crash the host leading to a denial-of-service or cause a random memory corruption.","affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-3837.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"2.6.32"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]}]}}],"references":[{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"}]}