CVE-2024-0562: Kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c
First published: Mon Jan 15 2024(Updated: )
A use-after-free flaw was found in the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.0 | 6.0 |
| Linux Linux kernel | <6.0 | |
| Linux Linux kernel | =6.0-rc1 | |
| Linux Linux kernel | =6.0-rc2 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 |
Remedy
https://patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1-khazhy@google.com/
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Reference Links
- https://access.redhat.com/errata/RHSA-2024:0412
- https://access.redhat.com/security/cve/CVE-2024-0562
- https://bugzilla.redhat.com/show_bug.cgi?id=2258475
- https://patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1-khazhy@google.com/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2258475#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2258475#c0
- https://patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1
- https://incrediboxgame.co/
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