CVE-2021-3573

Katalog CVE

CVSS 6.4 · Medium EPSS 0,37%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel, redhat enterprise linux +1 lainnya. Skor CVSS 3.1 6.4 (Medium) menurut NVD.

Deskripsi (NVD)

A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.

Rincian

Terbit di NVD

13 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

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')

EPSS (30 hari)

0,37% peluang dieksploitasi; lebih tinggi dari 29,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git/commit/?id=e305509e678b3a4af2b3cfd410f... patch · advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=1966578 issue tracking · advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2021/06/08/2 exploit · mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2023/07/02/1