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CVE-2024-58009

Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.78, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From f6ad641646b67f29c7578dcd6c25813c7dcbf51e · fixed in a9a7672fc1a0fe18502493936ccb06413ab89ea6; From daa13175a6dea312a76099066cb4cbd4fc959a84 · fixed in 8e605f580a97530e5a3583beea458a3fa4cbefbd; From a8677028dd5123e5e525b8195483994d87123de4 · fixed in cf601a24120c674cd7c907ea695f92617af6abd0; From bb2f2342a6ddf7c04f9aefbbfe86104cd138e629 · fixed in 297ce7f544aa675b0d136d788cad0710cdfb0785; From 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6 · fixed in 245d48c1ba3e7a1779c2f4cbc6f581ddc8a78e22; From 61686abc2f3c2c67822aa23ce6f160467ec83d35 · fixed in 691218a50c3139f7f57ffa79fb89d932eda9571e; From 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 · fixed in 49c0d55d59662430f1829ae85b969619573d0fa1; From 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 · fixed in 5f397409f8ee5bc82901eeaf799e1cbc4f8edcf1; From 5.4.287 · fixed in 5.4.291; From 5.10.231 · fixed in 5.10.235; From 5.15.174 · fixed in 5.15.179; From 6.1.120 · fixed in 6.1.129; From 6.6.66 · fixed in 6.6.78; From 6.12.5 · fixed in 6.12.14

  • Linux Linux

    6.13

  • KernelLinux

    fixed in 5.4.291; From 5.5.0 · fixed in 5.10.235; From 5.11.0 · fixed in 5.15.179; From 5.16.0 · fixed in 6.1.129; From 6.2.0 · fixed in 6.6.78; From 6.7.0 · fixed in 6.12.14; From 6.13.0 · fixed in 6.13.3

References 8

git.kernel.org