CVE-2023-53719
Published Oct 22, 2025
Modified Apr 15, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/081790eee6b47389a0d895262086d64c6a38d6e5
https://git.kernel.org/stable/c/153017561d2804cfae87cc9aa377aa84dd906ae1
https://git.kernel.org/stable/c/3f00df24a5021a6f02c1830a290acd4bceb22a2d
https://git.kernel.org/stable/c/40a462313ba4f337a2b419e7fb4a670f3dd95e14
https://git.kernel.org/stable/c/7525aa211758cc023a371e010d16ceaae1057807
https://git.kernel.org/stable/c/8ab5fc55d7f65d58a3c3aeadf11bdf60267cd2bd
https://git.kernel.org/stable/c/f76a18e53a66c0ef2938276110717b3805720cd9
Frequently Asked Questions
What is CVE-2023-53719? +
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.
How do I check if I'm vulnerable to CVE-2023-53719? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.