CVE-2021-33624

Katalog CVE

CVSS 4.7 · Medium EPSS 0,92%

Kerentanan Access of Resource Using Incompatible Type ('Type Confusion') pada linux kernel, debian linux. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.

Rincian

Terbit di NVD

23 Juni 2021

Terakhir diubah

8 Oktober 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

EPSS (30 hari)

0,92% peluang dieksploitasi; lebih tinggi dari 59,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/torvalds/linux/commit/9183671af6dbf60a1219371d4ed73e23f43b49db patch · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2021/06/21/1 exploit · mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html issue tracking · advisory pihak ketiga
• https://www.usenix.org/conference/usenixsecurity21/presentation/kirzner advisory pihak ketiga
• https://github.com/benschlueter/CVE-2021-33624