# CVE-2020-27784: linux: A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioct...

CVE-2020-27784 is fixed in linux on 1 platform, first by DEBIAN-CVE-2020-27784, released September 1, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-27784
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 1, 2022

## Description

A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.9.6-1 | [DEBIAN-CVE-2020-27784](https://patchblox.com/security/data/fix/linux/debian-cve-2020-27784.md) | Sep 1, 2022 |
| Linux | linux Debian 13.5 (trixie) | 5.9.6-1 | [DEBIAN-CVE-2020-27784](https://patchblox.com/security/data/fix/linux/debian-cve-2020-27784.md) | Sep 1, 2022 |
| Linux | linux Debian 14 | 5.9.6-1 | [DEBIAN-CVE-2020-27784](https://patchblox.com/security/data/fix/linux/debian-cve-2020-27784.md) | Sep 1, 2022 |

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