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.
Published: 2023-03-24
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2023-23816 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.
Ubuntu USN Ubuntu USN USN-6033-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6175-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6186-1 Linux kernel vulnerabilities
History

Thu, 20 Feb 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-02-20T18:50:07.985Z

Reserved: 2023-03-22T00:00:00.000Z

Link: CVE-2023-1583

cve-icon Vulnrichment

Updated: 2024-08-02T05:57:23.335Z

cve-icon NVD

Status : Modified

Published: 2023-03-24T22:15:07.137

Modified: 2025-02-20T19:15:11.037

Link: CVE-2023-1583

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-03-21T00:00:00Z

Links: CVE-2023-1583 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses