CVE-2023-2236

CVSS V2 None CVSS V3 None

Description

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.

Overview

CVE ID
CVE-2023-2236

Assigner
cve-coordination@google.com

Vulnerability Status
Awaiting Analysis

Published Version
2023-05-01T13:15:44

Last Modified Date
2023-05-01T13:38:48

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

References

Reference URL	Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4
https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2023-2236
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2236

History

Created	Old Value	New Value	Data Type	Notes
2023-05-01 14:01:05				Added to TrackCVE
2023-05-01 14:01:07			Weakness Enumeration	new