CVE-2026-79603

Katalog CVE

CVSS 4.3 · Medium EPSS 0,22%

Kerentanan Improper Control of a Resource Through its Lifetime. Skor CVSS 3.1 4.3 (Medium) menurut CISA ADP.

Deskripsi (NVD)

x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen (if needed) when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbed page.

Rincian

Terbit di NVD

8 September 2026

Terakhir diubah

8 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

4.3 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-664: Improper Control of a Resource Through its Lifetime

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,8% 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://xenbits.xenproject.org/xsa/advisory-511.html
• http://www.openwall.com/lists/oss-security/2026/09/08/8
• http://xenbits.xen.org/xsa/advisory-511.html