CVE-2023-6535

Kernel: null pointer dereference in nvmet_tcp_execute_request

HIGH
7.5
CVSS Score
Published: February 7, 2024 at 09:04 PM UTC
Updated: June 17, 2026 at 06:50 AM UTC
16 products affected across 2 vendorsLinux KernelEnterprise LinuxEnterprise Linux Server Aus

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
Vendor states this is fixed in 0:4.18.0-372.91.1.el8_6 (unaffected)
Vendor states this is fixed in 0:4.18.0-477.58.1.el8_8 (unaffected)
Vendor states this is fixed in 0:4.18.0-513.18.1.el8_9 (unaffected)
Vendor states this is fixed in 0:4.18.0-513.18.1.rt7.320.el8_9 (unaffected)
Vendor states this is fixed in 0:5.14.0-284.52.1.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-284.52.1.rt14.337.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-362.24.1.el9_3 (unaffected)
Vendor states this is fixed in 6 (unaffected)
Vendor states this is fixed in 7 (unaffected)

References (13)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:0723
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:0724
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2024:0725

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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