ReviewHigh

CVE-2023-2008

Linux kernel, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support

A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.

CVSS: 8.2
EPSS: 1.01%
CISA KEV: Not listed
Published: 2023.04.15

PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.01%

Technical severityCVSS 8.2

Vulnerability overview

Affected product and versions

Product: Linux kernel, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support
Affected versions: >= 4.20 < 5.4.202, >= 5.5 < 5.10.127, >= 5.11 < 5.15.51, >= 5.16 < 5.18.8, < 5.19, 5.19
Fixed versions: 5.19, 5.4.202, 5.10.127, 5.15.51, 5.18.8

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux kernel, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-129