CVE-2024-36012: Bluetooth: msft: fix slab-use-after-free in msft_do_close()
First published: Thu May 23 2024(Updated: )
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
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.12<6.1.91 | |
| Linux Kernel | >=6.2<6.6.31 | |
| Linux Kernel | >=6.7<6.8.10 | |
| Linux Kernel | =6.9-rc1 | |
| Linux Kernel | =6.9-rc2 | |
| Linux Kernel | =6.9-rc3 | |
| Linux Kernel | =6.9-rc4 | |
| Linux Kernel | =6.9-rc5 | |
| Linux Kernel | =6.9-rc6 | |
| Linux Kernel | =6.9-rc7 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/10f9f426ac6e752c8d87bf4346930ba347aaabac
- https://git.kernel.org/stable/c/4f1de02de07748da80a8178879bc7a1df37fdf56
- https://git.kernel.org/stable/c/a85a60e62355e3bf4802dead7938966824b23940
- https://git.kernel.org/stable/c/e3880b531b68f98d3941d83f2f6dd11cf4fd6b76
- https://launchpad.net/bugs/cve/CVE-2024-36012
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36012
- https://nvd.nist.gov/vuln/detail/CVE-2024-36012
- https://security-tracker.debian.org/tracker/CVE-2024-36012
- https://ubuntu.com/security/CVE-2024-36012
- https://git.kernel.org/linus/10f9f426ac6e752c8d87bf4346930ba347aaabac
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