CVE-2021-0920

Katalog CVE

CVSS 6.4 · Medium KEV · sudah dieksploitasi EPSS 0,87%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel, google android +1 lainnya. Skor CVSS 3.1 6.4 (Medium) menurut NVD. Masuk katalog KEV CISA pada 23 Mei 2022, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel

Rincian

Terbit di NVD

15 Desember 2021

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416: Use After Free

EPSS (30 hari)

0,87% peluang dieksploitasi; lebih tinggi dari 57,6% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Android Kernel Race Condition Vulnerability

Masuk KEV

23 Mei 2022

Tenggat CISA

13 Juni 2022 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://source.android.com/security/bulletin/2021-11-01 advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-0920 advisory pihak ketiga · pemerintah AS
• https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html mailing list · advisory pihak ketiga