CVE-2024-36012

Summary

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) kfree(msft); …(3) <- msft is freed.

================================================================== BUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:587 [inline] BUG: KASAN: slab-use-after-free in __mutex_lock+0x8f/0xc30 kernel/locking/mutex.c:752 Read of size 8 at addr ffff888106cbbca8 by task kworker/u5:2/309

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

CVE Program Container

Additional References

• https://git.kernel.org/stable/c/e3880b531b68f98d3941d83f2f6dd11cf4fd6b76
• https://git.kernel.org/stable/c/a85a60e62355e3bf4802dead7938966824b23940
• https://git.kernel.org/stable/c/4f1de02de07748da80a8178879bc7a1df37fdf56
• https://git.kernel.org/stable/c/10f9f426ac6e752c8d87bf4346930ba347aaabac

References

• https://git.kernel.org/stable/c/e3880b531b68f98d3941d83f2f6dd11cf4fd6b76
• https://git.kernel.org/stable/c/a85a60e62355e3bf4802dead7938966824b23940
• https://git.kernel.org/stable/c/4f1de02de07748da80a8178879bc7a1df37fdf56
• https://git.kernel.org/stable/c/10f9f426ac6e752c8d87bf4346930ba347aaabac

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