发布于3月6日3月6日 Members Huawei EulerOS: CVE-2021-47248: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 10/09/2024 Added 10/08/2024 Modified 10/08/2024 Description In the Linux kernel, the following vulnerability has been resolved: udp: fix race between close() and udp_abort() Kaustubh reported and diagnosed a panic in udp_lib_lookup(). The root cause is udp_abort() racing with close(). Both racing functions acquire the socket lock, but udp{v6}_destroy_sock() release it before performing destructive actions. We can't easily extend the socket lock scope to avoid the race, instead use the SOCK_DEAD flag to prevent udp_abort from doing any action when the critical race happens. Diagnosed-and-tested-by: Kaustubh Pandey <[email protected]> Solution(s) huawei-euleros-2_0_sp9-upgrade-kernel huawei-euleros-2_0_sp9-upgrade-kernel-tools huawei-euleros-2_0_sp9-upgrade-kernel-tools-libs huawei-euleros-2_0_sp9-upgrade-python3-perf References https://attackerkb.com/topics/cve-2021-47248 CVE - 2021-47248 EulerOS-SA-2024-2394
