CVE-2024-27389
pstore: inode: Only d_invalidate() is needed
We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.
Please see our statement on Data Privacy.
pstore: inode: Only d_invalidate() is needed
| Assigner | Linux |
| Reserved | 2024-02-25 |
| Published | 2024-05-01 |
| Updated | 2024-08-02 |
In the Linux kernel, the following vulnerability has been resolved: pstore: inode: Only d_invalidate() is needed Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning: WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410 Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen. ---
https://git.kernel.org/stable/c/db6e5e16f1ee9e3b01d2f71c7f0ba945f4bf0f4e
https://git.kernel.org/stable/c/4cdf9006fc095af71da80e9b5f48a32e991b9ed3
https://git.kernel.org/stable/c/cb9e802e49c24eeb3af35e9e8c04d526f35f112a
https://git.kernel.org/stable/c/340682ed1932b8e3bd0bfc6c31a0c6354eb57cc6
https://git.kernel.org/stable/c/a43e0fc5e9134a46515de2f2f8d4100b74e50de3
