Bug 2231800 (TRIAGE-CVE-2023-40283)

Summary: TRIAGE-CVE-2023-40283 kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c
Product: [Other] Security Response Reporter: Rohit Keshri <rkeshri>
Component: vulnerabilityAssignee: Nobody <nobody>
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Priority: medium    
Version: unspecifiedCC: dfreiber, jburrell, rogbas, vkumar
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Hardware: All   
OS: Linux   
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Bug Blocks: 2231794    

Description Rohit Keshri 2023-08-14 07:23:02 UTC
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10
https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1