PUB-A-194694600

vendorUSosv

view advisory published 2022-06-01Licence: per source

In hci_send_acl and related functions of hci_core.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2021-33034US	high7.8	0.83% (57th)	Exploit	2021-05-14
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.

references

External citations — patches, advisories, analysis.

https://android.googlesource.com/kernel/common/+/5c4c8c9544099bb9043a10a5318130a943e32fc3FIX
https://source.android.com/security/bulletin/2022-06-01ADVISORY

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