CVE-2021-33034

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

7.8 (HIGH) מקור הציון: NVD CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — סבירות ניצול

1% (אחוזון 100) נכון ל-15/8/2026

CWE

CWE-416

מוצרים מושפעים

linux: linux kernel; fedoraproject: fedora; debian: debian linux

קישורים

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4 Mailing ListPatchVendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=‮… Mailing ListPatchVendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4 Mailing ListPatchVendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=‮… Mailing ListPatchVendor Advisory
• https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-hci_send_acl ExploitThird Party Advisory
• https://syzkaller.appspot.com/bug?id=2e1943a94647f7732dd6fc60368642d6e8dc91b1 ExploitMailing ListThird Party Advisory
• https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-hci_send_acl ExploitThird Party Advisory
• https://syzkaller.appspot.com/bug?id=2e1943a94647f7732dd6fc60368642d6e8dc91b1 ExploitMailing ListThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Third Party Advisory