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.
References
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 07:39
Type | Values Removed | Values Added |
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References | () https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=02a4d923e4400a36d340ea12d8058f69ebf3a383 - Mailing List, Patch | |
References | () https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=io_uring-6.3&id=761efd55a0227aca3a69deacdaa112fffd44fe37 - Mailing List, Patch |
Information
Published : 2023-03-24 22:15
Updated : 2025-02-20 19:15
NVD link : CVE-2023-1583
Mitre link : CVE-2023-1583
CVE.ORG link : CVE-2023-1583
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference