CVE-2026-89967
CVE CVE-2026-89967EUVD EUVD-2026-80567Published 2026-09-16T10:32:48.000ZLast changed 2026-09-16T14:40:44.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: avoid out-of-bounds writes for compound folios migrate_device_range() and migrate_device_pfns() clear the entries following a compound folio so that the PFN arrays retain their page-granular representation. If a compound folio extends beyond the end of the caller-provided range, the loops clear all following folio entries without limiting them to the number of slots remaining in the npages-sized array, causing an out-of-bounds write. Do not proceed with a compound folio if its page-granular representation does not fit entirely in the remaining PFN array. If this happens, drop any reference and lock acquired for the folio, clear the remaining entries, and stop collecting. Observed with a KASAN x86 QEMU kernel using the HMM migrate_anon_huge_zero selftest. Closing /dev/hmm_dmirror0 after migrating an anonymous huge page to device memory exercises: dmirror_fops_release() -> dmirror_device_evict_chunk() -> migrate_device_range()
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 a30b48bf1b244f11bf9b6d20cdccfe0c2264130c <dc41e961a269f2ca4196e669d6d8e05480899cd4; a30b48bf1b244f11bf9b6d20cdccfe0c2264130c <99186b185c245f5987d7f8715d5504c8d8cc04a0; patch: 7.2.5; patch: 0; patch: 7.3-rc2; 6.19
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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