CVE-2021-34981: linux kernel

csirt@kutim:~/threat-intel/cve/CVE-2021-34981

CVSS 6.7 · Medium EPSS 0,20%

Kerentanan Double Free pada linux kernel. Skor CVSS 3.1 6.7 (Medium) menurut NVD.

Deskripsi (NVD)

Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.

Rincian

Terbit di NVD: 7 Mei 2024
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.7 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-415: Double Free
EPSS (30 hari): 0,20% peluang dieksploitasi; lebih tinggi dari 9,0% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
linux	linux kernel	Semua versi sebelum 5.10.42

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://www.zerodayinitiative.com/advisories/ZDI-21-1223/ advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.