CVE-2021-47360
binder: make sure fd closes complete
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 80cd795630d6526ba729a089a435bf74a57af927 – < aa2c274c279ff365a06a4cba263f04965895166e
- affected 80cd795630d6526ba729a089a435bf74a57af927 – < d5b0473707fa53b03a5db0256ce62b2874bddbc7
- affected 80cd795630d6526ba729a089a435bf74a57af927 – < b95483d8d94b41fa31a84c1d86710b7907a37621
- affected 80cd795630d6526ba729a089a435bf74a57af927 – < 5fdb55c1ac9585eb23bb2541d5819224429e103d
- affected 27564d8d5d12d2ff197055346069c6bdbe08a8c2
- affected 4.20.1 – < 4.21
- affected 5.0
- unaffected < 5.0
- unaffected 5.4.150 – ≤ 5.4.*
- unaffected 5.10.70 – ≤ 5.10.*
- unaffected 5.14.9 – ≤ 5.14.*
- unaffected 5.15 – ≤ *
References (4)
- https://git.kernel.org/stable/c/aa2c274c279ff365a06a4cba263f04965895166e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d5b0473707fa53b03a5db0256ce62b2874bddbc7 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/b95483d8d94b41fa31a84c1d86710b7907a37621 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/5fdb55c1ac9585eb23bb2541d5819224429e103d (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-47360)Record last updated .