# CVE-2023-52457: linux: In the Linux kernel, the following vulnerability has been resolved:  serial: 8250: omap: Don't skip resource freeing...

CVE-2023-52457 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52457, released February 23, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-52457
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 23, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed  Returning an error code from .remove() makes the driver core emit the little helpful error message:  	remove callback returned a non-zero value. This will be ignored.  and then remove the device anyhow. So all resources that were not freed are leaked in this case. Skipping serial8250_unregister_port() has the potential to keep enough of the UART around to trigger a use-after-free.  So replace the error return (and with it the little helpful error message) by a more useful error message and continue to cleanup.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.76-1 | [DEBIAN-CVE-2023-52457](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52457.md) | Feb 23, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.6.15-1 | [DEBIAN-CVE-2023-52457](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52457.md) | Feb 23, 2024 |
| Linux | linux Debian 14 | 6.6.15-1 | [DEBIAN-CVE-2023-52457](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52457.md) | Feb 23, 2024 |

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