CVE-2021-47360

medium

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.

References

https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7

https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621

https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e

https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d

Details

Source: Mitre, NVD

Published: 2024-05-21

Updated: 2024-05-21

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium