# CVE-2023-53719: serial: arc\_uart: fix of\_iomap leak in \`arc\_serial\_probe\`

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-22 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.17

## Description

In the Linux kernel, the following vulnerability has been resolved: serial: arc_uart: fix of_iomap leak in `arc_serial_probe` Smatch reports: drivers/tty/serial/arc_uart.c:631 arc_serial_probe() warn: 'port->membase' from of_iomap() not released on lines: 631. In arc_serial_probe(), if uart_add_one_port() fails, port->membase is not released, which would cause a resource leak. To fix this, I replace of_iomap with devm_platform_ioremap_resource.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
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## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/3f00df24a5021a6f02c1830a290acd4bceb22a2d
- https://git.kernel.org/stable/c/7525aa211758cc023a371e010d16ceaae1057807
- https://git.kernel.org/stable/c/153017561d2804cfae87cc9aa377aa84dd906ae1
- https://git.kernel.org/stable/c/f76a18e53a66c0ef2938276110717b3805720cd9
- https://git.kernel.org/stable/c/081790eee6b47389a0d895262086d64c6a38d6e5
- https://git.kernel.org/stable/c/40a462313ba4f337a2b419e7fb4a670f3dd95e14
- https://git.kernel.org/stable/c/8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd

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Page: https://cve.now/CVE-2023-53719
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