Bug 2420332 (CVE-2023-53858)

Summary: CVE-2023-53858 kernel: tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A memory leak vulnerability was found in the Samsung serial TTY driver in the Linux kernel. In s3c24xx_serial_getclk(), when clk_get_rate() fails, the previously allocated clock resource is not freed, leading to a memory leak. Repeated failures can cause resource exhaustion.
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Description OSIDB Bzimport 2025-12-09 02:03:34 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error

If clk_get_rate() fails, the clk that has just been allocated needs to be
freed.
Comment 1 Jon Moroney 2025-12-09 20:23:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120904-CVE-2023-53858-87d4@gregkh/T