#VU117557 Memory leak in Linux kernel - CVE-2022-50576
Published: October 23, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU117557
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-50576
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the pch_request_dma() function in drivers/tty/serial/pch_uart.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5
- https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4
- https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6
- https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a
- https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02
- https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5
- https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868
- https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb
- https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.270