CVEvulnerability

CVE-2023-1583

5.5 MEDIUM Published 2023-03-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-03-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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.

Affected configurations

• linux linux kernel (>= 5.19 < 6.1.22) • linux linux kernel (>= 6.2.0 < 6.2.9)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References