5.5
Medium
CVE-2023-1583 A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in…
Description
A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux kernel | Versions not published |
References
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
Timeline
- Published
- Last modified
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