CVE-2021-47360
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.
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-252
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103dPatch
- https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166ePatch
- https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621Patch
- https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7Patch
- https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103dPatch
- https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166ePatch
- https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621Patch
- https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.