CVE-2021-33034
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-33034
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33034.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-33034
- Aliases
-
- A-194694600
- PUB-A-194694600
- Downstream
- Related
- Published
- 2021-05-14T23:15:09Z
- Modified
- 2025-08-09T20:01:26Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel before 5.12.4, net/bluetooth/hcievent.c has a use-after-free when destroying an hcichan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.
- References
-
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c4c8c9544099bb9043a10a5318130a943e32fc3
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-hci_send_acl
- https://syzkaller.appspot.com/bug?id=2e1943a94647f7732dd6fc60368642d6e8dc91b1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/