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PRIOn knowledge basePRION:CVE-2023-1583HistoryMar 24, 2023 - 10:15 p.m.
Null pointer dereference
2023-03-2422:15:00
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5
linux kernel
io_uring
null pointer
dereference
system crash
nvd
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| linux_kernel | ge | 6.2.0 | |
| linux_kernel | lt | 6.2.9 | |
| linux_kernel | ge | 5.19 | |
| linux_kernel | lt | 6.1.22 |
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