VDB
CISA-2023-1583
CISA-2023-1583
PUBLISHED
CVSS 5.5 MEDIUM
Reported by redhat · Published March 24, 2023
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.
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| n/a | Linux kernel | affected kernel 5.19, 6.0, 6.1, 6.2, 6.3 |
| n/a | Linux kernel | *, affected kernel 5.19, 6.0, 6.1, 6.2, 6.3 |
Timeline
- Mar 24, 2023 CVE Published
- Feb 20, 2025 CVE Updated