CVE-2021-47653
media: davinci: vpif: fix use-after-free on driver unbind
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: media: davinci: vpif: fix use-after-free on driver unbind The driver allocates and registers two platform device structures during probe, but the devices were never deregistered on driver unbind. This results in a use-after-free on driver unbind as the device structures were allocated using devres and would be freed by driver core when remove() returns. Fix this by adding the missing deregistration calls to the remove() callback and failing probe on registration errors. Note that the platform device structures must be freed using a proper release callback to avoid leaking associated resources like device names.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (3 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 479f7a1181058689435baddc16a6a42e1a8ff0e8 – < 6512c3c39cb6b573b791ce45365818a38b76afbe
- affected 479f7a1181058689435baddc16a6a42e1a8ff0e8 – < b5a3bb7f6f164eb6ee74ef4898dcd019b2063448
- affected 479f7a1181058689435baddc16a6a42e1a8ff0e8 – < 9ffc602e14d7b9f7e7cb2f67e18dfef9ef8af676
- affected 479f7a1181058689435baddc16a6a42e1a8ff0e8 – < 43acb728bbc40169d2e2425e84a80068270974be
- affected 4.13
- unaffected < 4.13
- unaffected 5.15.54 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (4)
- https://git.kernel.org/stable/c/6512c3c39cb6b573b791ce45365818a38b76afbe (opens in a new tab)
- https://git.kernel.org/stable/c/b5a3bb7f6f164eb6ee74ef4898dcd019b2063448 (opens in a new tab)
- https://git.kernel.org/stable/c/9ffc602e14d7b9f7e7cb2f67e18dfef9ef8af676 (opens in a new tab)
- https://git.kernel.org/stable/c/43acb728bbc40169d2e2425e84a80068270974be (opens in a new tab)
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-2021-47653)Record last updated .