Use After Free Affecting kernel-debug package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUG-7045139
- published 23 May 2024
- disclosed 23 May 2024
Introduced: 23 May 2024
CVE-2024-36012 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-debug.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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
References
- https://access.redhat.com/security/cve/CVE-2024-36012
- 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