CVE-2023-6238

2023-11-2100:00:00

ubuntu.com

nvme

kernel memory

buffer overflow

dma

linux

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

AI Score

6.5

Confidence

High

EPSS

Percentile

9.0%

JSON

A buffer overflow vulnerability was found in the NVM Express (NVMe) driver
in the Linux kernel. Only privileged user could specify a small meta buffer
and let the device perform larger Direct Memory Access (DMA) into the same
buffer, overwriting unrelated kernel memory, causing random kernel crashes
and memory corruption.

Bugs

Notes

Author	Note
	Priority reason: Requires a privileged user to grant access to the device in order to exploit.
sbeattie	unfixed upstream as of 2024-04-10

OSVersionArchitecturePackageVersionFilename
ubuntu24.04noarchlinux< anyUNKNOWN
ubuntu24.04noarchlinux-aws< anyUNKNOWN
ubuntu22.04noarchlinux-aws-6.5< anyUNKNOWN
ubuntu24.04noarchlinux-azure< anyUNKNOWN
ubuntu22.04noarchlinux-azure-6.5< anyUNKNOWN
ubuntu24.04noarchlinux-gcp< anyUNKNOWN
ubuntu22.04noarchlinux-gcp-6.5< anyUNKNOWN
ubuntu24.04noarchlinux-gke< anyUNKNOWN
ubuntu24.04noarchlinux-ibm< anyUNKNOWN
ubuntu24.04noarchlinux-intel< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	24.04	noarch	linux	< any	UNKNOWN
ubuntu	24.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	22.04	noarch	linux-aws-6.5	< any	UNKNOWN
ubuntu	24.04	noarch	linux-azure	< any	UNKNOWN
ubuntu	22.04	noarch	linux-azure-6.5	< any	UNKNOWN
ubuntu	24.04	noarch	linux-gcp	< any	UNKNOWN
ubuntu	22.04	noarch	linux-gcp-6.5	< any	UNKNOWN
ubuntu	24.04	noarch	linux-gke	< any	UNKNOWN
ubuntu	24.04	noarch	linux-ibm	< any	UNKNOWN
ubuntu	24.04	noarch	linux-intel	< any	UNKNOWN