摘要:
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.
安全等级: Low
公告ID: KylinSec-SA-2023-1247
发布日期: 2023年4月4日
关联CVE: 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 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.
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2023-1583 | KY3.4-4A | kernel | Unaffected |
| CVE-2023-1583 | KY3.4-5A | kernel | Unaffected |
| CVE-2023-1583 | KY3.5.1 | kernel | Unaffected |
