U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-50564 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: s390/netiucv: Fix return type of netiucv_tx() With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals: drivers/s390/net/netiucv.c:1854:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict] .ndo_start_xmit = netiucv_tx, ^~~~~~~~~~ ->ndo_start_xmit() in 'struct net_device_ops' expects a return type of 'netdev_tx_t', not 'int'. Adjust the return type of netiucv_tx() to match the prototype's to resolve the warning and potential CFI failure, should s390 select ARCH_SUPPORTS_CFI_CLANG in the future. Additionally, while in the area, remove a comment block that is no longer relevant.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://git.kernel.org/stable/c/3ac0217ca9186c2f9af9a0113a331a42aa847894 kernel.org
https://git.kernel.org/stable/c/4bee3c75d5bf7c2b5dc0b520410eb40449e5da31 kernel.org
https://git.kernel.org/stable/c/85d392710275355425df8618ccbebbc336f5acc5 kernel.org
https://git.kernel.org/stable/c/88d86d18d7cf7e9137c95f9d212bb9fff8a1b4be kernel.org
https://git.kernel.org/stable/c/d034fa43af92fc46a81d882f46d9cc3e4ffdbbcc kernel.org
https://git.kernel.org/stable/c/dfbf0122ea1b9b3e73fa22c8ff6bd888935c54fc kernel.org
https://git.kernel.org/stable/c/e7a849f740e3576e79cba403697e916f4c3a6f12 kernel.org
https://git.kernel.org/stable/c/eccc88c0efe407e579291792ad07a7dedc0f63f0 kernel.org
https://git.kernel.org/stable/c/f13d870fce90f01cf930bfaffecc8185ae0be21c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-50564
NVD Published Date:
10/22/2025
NVD Last Modified:
10/22/2025
Source:
kernel.org