Kernel: nvme: memory corruption via unprivileged user passthrough
CVE-2023-6238

6.7MEDIUM

Key Information:

Vendor

Red Hat
Status
Kernel
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
21 November 2023
đź”” Create Red Hat Vulnerability Alert

What is CVE-2023-6238?

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.

References

https://access.redhat.com/security/cve/CVE-2023-6238
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2250834
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2023-6238 : Kernel: nvme: memory corruption via unprivileged user passthrough