CVE-2024-58009Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc A NULL sock pointer is passed into l2cap_sock_alloc() when it is called from l2cap_sock_new_connection_c…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc
A NULL sock pointer is passed into l2cap_sock_alloc() when it is called from l2cap_sock_new_connection_cb() and the error handling paths should also be aware of it.
Seemingly a more elegant solution would be to swap bt_sock_alloc() and l2cap_chan_create() calls since they are not interdependent to that moment but then l2cap_chan_create() adds the soon to be deallocated and still dummy-initialized channel to the global list accessible by many L2CAP paths. The channel would be removed from the list in short period of time but be a bit more straight-forward here and just check for NULL instead of changing the order of function calls.
Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.
linux_kernel >= 5.4.287, < 5.4.291linux_kernel >= 5.10.231, < 5.10.235linux_kernel >= 5.15.174, < 5.15.179linux_kernel >= 6.1.120, < 6.1.129linux_kernel >= 6.6.66, < 6.6.78linux_kernel >= 6.12.5, < 6.12.14linux_kernel >= 6.13, < 6.13.3Upgrade past the affected range:
linux_kernel 6.13.3Connected by shared product, vendor, weakness, or advisory.
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