Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.19, < 6.1.22 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=02a4dMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=Mailing ListPatch
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=02a4dMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=Mailing ListPatch
FAQ
What is CVE-2023-1583?
CVE-2023-1583 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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_...
How severe is CVE-2023-1583?
CVE-2023-1583 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-1583?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.