发布于3月6日3月6日 Members Ubuntu: (CVE-2021-47360): linux vulnerability Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 11/21/2024 Added 11/19/2024 Modified 02/11/2025 Description In the Linux kernel, the following vulnerability has been resolved: binder: make sure fd closes complete During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object cleanup may close 1 or more fds. The close operations are completed using the task work mechanism -- which means the thread needs to return to userspace or the file object may never be dereferenced -- which can lead to hung processes. Force the binder thread back to userspace if an fd is closed during BC_FREE_BUFFER handling. Solution(s) ubuntu-upgrade-linux ubuntu-upgrade-linux-aws ubuntu-upgrade-linux-aws-5-4 ubuntu-upgrade-linux-aws-fips ubuntu-upgrade-linux-azure ubuntu-upgrade-linux-azure-5-4 ubuntu-upgrade-linux-azure-fips ubuntu-upgrade-linux-bluefield ubuntu-upgrade-linux-fips ubuntu-upgrade-linux-gcp ubuntu-upgrade-linux-gcp-5-4 ubuntu-upgrade-linux-gcp-fips ubuntu-upgrade-linux-gkeop ubuntu-upgrade-linux-hwe-5-4 ubuntu-upgrade-linux-ibm ubuntu-upgrade-linux-kvm ubuntu-upgrade-linux-oracle ubuntu-upgrade-linux-oracle-5-4 ubuntu-upgrade-linux-raspi ubuntu-upgrade-linux-raspi-5-4 References https://attackerkb.com/topics/cve-2021-47360 CVE - 2021-47360 https://git.kernel.org/linus/5fdb55c1ac9585eb23bb2541d5819224429e103d https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 https://www.cve.org/CVERecord?id=CVE-2021-47360 View more
