CVE-2026-93074

CVE CVE-2026-93074EUVD EUVD-2026-82184Published 2026-09-17T16:10:57.000ZLast changed 2026-09-18T17:55:52.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: dax/fsdev: use __va(phys) for kaddr in direct_access Use __va(phys) instead of virt_addr + linear_offset for the kaddr return in __fsdev_dax_direct_access(). The previous code added a device-linear byte offset to virt_addr (which is __va of ranges[0]), but for multi-range devices with physical gaps between ranges, this linear arithmetic crosses the gap and produces a wrong kernel virtual address. Using __va(phys) where phys comes from dax_pgoff_to_phys() is correct for any range layout because the direct map translates each physical address independently. This leaves dev_dax->virt_addr write-only, so remove the field (suggested by Dave Jiang).

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 759455848df0b9ac3acabdbedcdc4a55af67935f <ff7c73fca793bd5c29a15ba735b0886f62f3a840; patch: 7.2.6; 759455848df0b9ac3acabdbedcdc4a55af67935f <7b642bd3d39105eef4d5908970726c5fda291b53; patch: 7.3-rc1; 7.1; patch: 0

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

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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