# CVE-2021-47403: linux: In the Linux kernel, the following vulnerability has been resolved:  ipack: ipoctal: fix module reference leak  A ref...

CVE-2021-47403 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47403, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-47403
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  ipack: ipoctal: fix module reference leak  A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped.  Fix this by taking the module reference and initialising the tty driver data when installing the tty.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.12-1 | [DEBIAN-CVE-2021-47403](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47403.md) | May 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.12-1 | [DEBIAN-CVE-2021-47403](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47403.md) | May 21, 2024 |
| Linux | linux Debian 14 | 5.14.12-1 | [DEBIAN-CVE-2021-47403](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47403.md) | May 21, 2024 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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