PT-2023-7314 · Linux+2 · Linux Kernel+2

Mauro Matteo Cascella · Published 2023-11-21 · Updated 2026-04-20 · CVE-2023-6238

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:L/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel. This issue is related to the nvme add user metadata() function and allows a privileged user to specify a small meta buffer, enabling the device to perform larger Direct Memory Access (DMA) into the same buffer. This can overwrite unrelated kernel memory, causing random kernel crashes and memory corruption. The exploitation of this vulnerability may impact the confidentiality, integrity, and availability of protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Memory Corruption

Out of bounds Read

Weakness Enumeration

CWE-120

CWE-787

CWE-119

CWE-125

Related Identifiers

BDU:2023-08343

CVE-2023-6238

SUSE-SU-2024:2135-1

SUSE-SU-2024:2203-1

SUSE-SU-2024:2973-1

SUSE-SU-2025:20008-1

SUSE-SU-2025:20028-1

Affected Products

Debian

Linux Kernel

Suse

References · 1951

• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2023-6238 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-6238 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-6238 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20008-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-6238 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-6238 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-6238 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2973-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-08343 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2023-6238 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-6238 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-6238 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20028-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2203-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2135-1 · Vendor Advisory