Executive Summary

Informations
Name CVE-2024-41062 First vendor Publication 2024-07-29
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

bluetooth/l2cap: sync sock recv cb and release

The problem occurs between the system call to close the sock and hci_rx_work, where the former releases the sock and the latter accesses it without lock protection.

CPU0 CPU1
---- ----
sock_close hci_rx_work
l2cap_sock_release hci_acldata_packet
l2cap_sock_kill l2cap_recv_frame
sk_free l2cap_conless_channel
l2cap_sock_recv_cb

If hci_rx_work processes the data that needs to be received before the sock is closed, then everything is normal; Otherwise, the work thread may access the released sock when receiving data.

Add a chan mutex in the rx callback of the sock to achieve synchronization between the sock release and recv cb.

Sock is dead, so set chan data to NULL, avoid others use invalid sock pointer.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-41062

Sources (Detail)

https://git.kernel.org/stable/c/3b732449b78183d17178db40be3a4401cf3cd629
https://git.kernel.org/stable/c/605572e64cd9cebb05ed609d96cff05b50d18cdf
https://git.kernel.org/stable/c/89e856e124f9ae548572c56b1b70c2255705f8fe
https://git.kernel.org/stable/c/b803f30ea23e0968b6c8285c42adf0d862ab2bf6
Source Url

Alert History

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0
1
Date Informations
2024-11-25 09:23:26
  • Multiple Updates
2024-07-29 21:27:27
  • First insertion