CVE-2026-89593
גבוהה 7.1
תיאור (מקור, אנגלית)
In the Linux kernel, the following vulnerability has been resolved: hugetlb: only adjust reservation during unmapping if mapcount is 0 Since df7a6d1f6405, __unmap_hugepage_range can adjust reservations. In the case of folio mapped in both a parent and a child, if the parent unmaps the range first, the reservation adjustment will result in an underflow of the reserved count. Once the child unmaps the range, the count is restored. Change __unmap_hugepage_range() to check the mapcount before adjusting the reservation.
מדדים
- CVSS 3.1
-
7.1 (HIGH)
מקור הציון: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H - EPSS — סבירות ניצול
- 0% (אחוזון 000) נכון ל-3/10/2026