CVE-2021-28039

Katalog CVE

CVSS 6.5 · Medium EPSS 0,42%

Kerentanan Incorrect Calculation of Buffer Size pada linux kernel, xen +2 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.

Rincian

Terbit di NVD

5 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-131: Incorrect Calculation of Buffer Size

EPSS (30 hari)

0,42% peluang dieksploitasi; lebih tinggi dari 34,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://xenbits.xen.org/xsa/advisory-369.html patch · advisory vendor
• http://www.openwall.com/lists/oss-security/2021/03/05/2 mailing list · patch · advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210409-0001/ advisory pihak ketiga
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152...