CVE-2023-4155

Katalog CVE

CVSS 5.6 · Medium EPSS 0,17%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada linux kernel, redhat enterprise linux +1 lainnya. Skor CVSS 3.1 5.6 (Medium) menurut NVD.

Deskripsi (NVD)

A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (`CONFIG_VMAP_STACK`).

Rincian

Terbit di NVD

13 September 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=2213802 issue tracking · patch · advisory pihak ketiga
• https://access.redhat.com/security/cve/CVE-2023-4155 advisory pihak ketiga