CVE-2026-80685

Katalog CVE

CVSS 7.1 · High EPSS 0,16%

Skor CVSS 3.1 7.1 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: mm/util: don't read __page_2 for order-1 folios in snapshot_page() snapshot_page() currently reads __page_2 after checking nr_pages > 1, but it should only do so when nr_pages > 2. If an order-1 folio is allocated at the end of a vmemmap section, __page_2 will not exist and reading it will cause a fault. During DLPAR memory remove on a 22 TB ppc64le LPAR, snapshot_page() oopsed on the page isolation path while reading an order-1 folio's __page_2 from an adjacent absent section (unmapped vmemmap). Fix this to avoid reading memmap that doesn't exist (e.g., a vmemmap hole).

Rincian

Terbit di NVD

28 Agustus 2026

Terakhir diubah

21 September 2026

Status NVD

Received

CVSS 3.1

7.1 (High), sumber CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 5,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/7441d6348c70738e9ed307510db171c7a9b3f4bf
• https://git.kernel.org/stable/c/9668ffe0e2a5e2399dce281620198a2e415871fc
• https://git.kernel.org/stable/c/c649324571206a30949765320b91ccdb4c1722dc