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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-68434 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms Commit b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected platforms") replaced the dnv_board setup and exit callbacks with PTR_IF(false, ...), which evaluates to NULL. However, the three call sites in mid8250_probe() and mid8250_remove() unconditionally dereference these function pointers without NULL checks, causing a NULL pointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon D (ICX-D/CDF), or Snowridge (SNR) platform. Fix this by adding the missing NULL checks before calling the setup and exit callbacks.


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

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1096397c31f6bffa95e77bdd18fbca085be83e10 kernel.org
https://git.kernel.org/stable/c/4ea933a36a14bec19b71025cdd8407bafbd67ec1 kernel.org
https://git.kernel.org/stable/c/600dcd548fb2b00a69f447684f52ba45d5a3540e kernel.org
https://git.kernel.org/stable/c/7fb13fd7e9a59a37cd911efff83abe19e3ee029d kernel.org
https://git.kernel.org/stable/c/8cbad52ccfa6a7f089cfab34979bc6cc3bff25be kernel.org
https://git.kernel.org/stable/c/b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56 kernel.org
https://git.kernel.org/stable/c/bdaa8871b53fe9b1730ef64dda2fcd662fd83339 kernel.org
https://git.kernel.org/stable/c/f85a42fb90399dedcf81c146d09c07e4548b1e8c kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-68434
NVD Published Date:
08/11/2026
NVD Last Modified:
08/23/2026
Source:
kernel.org