vulnerability
Red Hat: CVE-2021-33034: CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | May 14, 2021 | Jun 30, 2021 | Mar 27, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
May 14, 2021
Added
Jun 30, 2021
Modified
Mar 27, 2026
Description
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.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
References
Rapid7 Labs
2026 Global Threat Landscape Report
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