CVE-2021-33034

Katalog CVE

CVSS 7.8 · High EPSS 0,83%

Kerentanan Use After Free pada linux kernel, fedoraproject fedora +1 lainnya. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.

Rincian

Terbit di NVD

14 Mei 2021

Terakhir diubah

13 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,83% peluang dieksploitasi; lebih tinggi dari 56,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4 mailing list · patch · advisory vendor
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c4c8c9544099bb9043a10a5318130a9... mailing list · patch · advisory vendor
• https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html advisory pihak ketiga
• https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-hci_send_acl exploit · advisory pihak ketiga
• https://syzkaller.appspot.com/bug?id=2e1943a94647f7732dd6fc60368642d6e8dc91b1 exploit · mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3A... broken link