CVE-2026-68434

CVE CVE-2026-68434EUVD EUVD-2026-57042Published 2026-08-12T00:07:21.000ZLast changed 2026-08-19T16:35:35.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 587afb06a5d1dc5092d3d9e9ac3ccf22094d50c6 <1096397c31f6bffa95e77bdd18fbca085be83e10; 7.1.4 <7.1.6; 0b3ed3fa227ba778cabed96e7f8d84addb8bdf9c <4ea933a36a14bec19b71025cdd8407bafbd67ec1; c7d190bb07bf4e3b217c69370e94d1b4c80a40ad; 763d61ded752fbb3116efc951eff4363f237b7e0; 9690e8a342632344984af72bc56b7a1fba61e6cb <8cbad52ccfa6a7f089cfab34979bc6cc3bff25be; 6.1.178 <6.1.183; 6.18.39 <6.18.42; 6.12.96 <6.12.101; b1b4efea05a56c0995e4702a86d6624b4fdff32f <7fb13fd7e9a59a37cd911efff83abe19e3ee029d; 5.15.212 <5.16; 5.10.261 <5.11; 6.6.145 <6.6.148; 977855894bca4b87afa50d21e3f3e85a5a0e901f <600dcd548fb2b00a69f447684f52ba45d5a3540e; 1cd54e217c6e2cdb794a897b2f855e13ffcee586 <b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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