CVE-2022-23033

Katalog CVE

CVSS 7.8 · High EPSS 0,34%

Kerentanan Improper Resource Shutdown or Release pada xen, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.

Rincian

Terbit di NVD

25 Januari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-404: Improper Resource Shutdown or Release

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://xenbits.xenproject.org/xsa/advisory-393.txt advisory vendor
• http://www.openwall.com/lists/oss-security/2022/01/25/2 mailing list · patch · advisory pihak ketiga
• https://security.gentoo.org/glsa/202208-23 advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5117 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKN...