{"id":"CVE-2026-68434","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms\n\nCommit b1b4efea05a5 (\"serial: 8250_mid: Disable DMA for selected\nplatforms\") replace…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms\n\nCommit b1b4efea05a5 (\"serial: 8250_mid: Disable DMA for selected\nplatforms\") replace…","severity":"none","published":"2026-08-12","updated":"2026-08-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68434","references":[{"url":"https://git.kernel.org/stable/c/1096397c31f6bffa95e77bdd18fbca085be83e10","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4ea933a36a14bec19b71025cdd8407bafbd67ec1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/600dcd548fb2b00a69f447684f52ba45d5a3540e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7fb13fd7e9a59a37cd911efff83abe19e3ee029d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8cbad52ccfa6a7f089cfab34979bc6cc3bff25be","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bdaa8871b53fe9b1730ef64dda2fcd662fd83339","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f85a42fb90399dedcf81c146d09c07e4548b1e8c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00177,"epssPercentile":0.07534,"ingestedAt":"2026-08-23T13:48:07.254Z","slug":"CVE-2026-68434","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms\n\nCommit b1b4efea05a5 (\"serial: 8250_mid: Disable DMA for selected\nplatforms\") replaced the dnv_board setup and exit callbacks with\nPTR_IF(false, ...), which evaluates to NULL. However, the three call\nsites in mid8250_probe() and mid8250_remove() unconditionally\ndereference these function pointers without NULL checks, causing a NULL\npointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon\nD (ICX-D/CDF), or Snowridge (SNR) platform.\n\nFix this by adding the missing NULL checks before calling the setup and\nexit callbacks.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}