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Change History

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

Bluetooth: msft: fix slab-use-after-free in msft_do_close()

Tying the msft->data lifetime to hdev by freeing it in
hci_release_dev() to fix the following case:

[use]
msft_do_close()
  msft = hdev->msft_data;
  if (!msft)                      ...(1) <- passed.
    return;
  mutex_lock(&msft->filter_lock); ...(4) <- used after freed.

[free]
msft_unregister()
  msft = hdev->msft_data;
  hdev->msft_data = NULL;         ...(2)
  

kernel.org https://git.kernel.org/stable/c/10f9f426ac6e752c8d87bf4346930ba347aaabac [No types assigned]

kernel.org https://git.kernel.org/stable/c/4f1de02de07748da80a8178879bc7a1df37fdf56 [No types assigned]

kernel.org https://git.kernel.org/stable/c/a85a60e62355e3bf4802dead7938966824b23940 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e3880b531b68f98d3941d83f2f6dd11cf4fd6b76 [No types assigned]