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CVE-2023-6356

Kernel: null pointer dereference in nvmet_tcp_build_iovec

CVSS score

6.5

EPSS probability

%1.5

Risk score

0.1

Published

2 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach CVE AI Research

CVE-2023-6356 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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 and causing kernel panic and a denial of service.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2023-6356 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Red HatRed Hat Enterprise Linux 8 View
2Red HatRed Hat Enterprise Linux 8 View
3Red HatRed Hat Enterprise Linux 8.6 Extended Update Support View
4Red HatRed Hat Enterprise Linux 8.8 Extended Update Support View
5Red HatRed Hat Enterprise Linux 9 View
6Red HatRed Hat Enterprise Linux 9.2 Extended Update Support View
7Red HatRed Hat Enterprise Linux 9.2 Extended Update Support View
8Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8 View
9Red HatRHOL-5.8-RHEL-9 View
10Red HatRHOL-5.8-RHEL-9 View
11Red HatRHOL-5.8-RHEL-9 View
12Red HatRHOL-5.8-RHEL-9 View
13Red HatRHOL-5.8-RHEL-9 View
14Red HatRHOL-5.8-RHEL-9 View
15Red HatRHOL-5.8-RHEL-9 View
16Red HatRHOL-5.8-RHEL-9 View
17Red HatRHOL-5.8-RHEL-9 View
18Red HatRHOL-5.8-RHEL-9 View
19Red HatRHOL-5.8-RHEL-9 View
20Red HatRHOL-5.8-RHEL-9 View
21Red HatRHOL-5.8-RHEL-9 View
22Red HatRHOL-5.8-RHEL-9 View
23Red HatRHOL-5.8-RHEL-9 View
24Red HatRHOL-5.8-RHEL-9 View
25Red HatRHOL-5.8-RHEL-9 View
26Red HatRed Hat Enterprise Linux 6 View
27Red HatRed Hat Enterprise Linux 7 View
28Red HatRed Hat Enterprise Linux 9 View
29redhatcodeready linux builder eus View
30redhatcodeready linux builder eus View
31redhatcodeready linux builder eus for power little endian eus View
32redhatcodeready linux builder eus for power little endian eus View
33redhatcodeready linux builder for arm64 eus View
34redhatcodeready linux builder for arm64 eus View
35redhatcodeready linux builder for ibm z systems eus View
36redhatenterprise linux View
37redhatenterprise linux View
38redhatenterprise linux eus View
39redhatenterprise linux eus View
40redhatenterprise linux for arm 64 eus View
41redhatenterprise linux for arm 64 eus View
42redhatenterprise linux for ibm z systems eus View
43redhatenterprise linux for ibm z systems eus View
44redhatenterprise linux for power little endian eus View
45redhatenterprise linux for power little endian eus View
46redhatenterprise linux for real time View
47redhatenterprise linux for real time for nfv View
48redhatenterprise linux server aus View
49redhatenterprise linux server aus View
50redhatenterprise linux server for power little endian update services for sap solutions View
51redhatenterprise linux server for power little endian update services for sap solutions View
52redhatenterprise linux server tus View
53redhatvirtualization host View
54linuxlinux kernel View
55linuxlinux kernel View
56linuxlinux kernel View
57linuxlinux kernel View
58linuxlinux kernel View
59linuxlinux kernel View
60debiandebian linux View
Total affected vendors: 4|Products: 60

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD
6.5CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD
6.5CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-6356 is associated with the following CWEs:

CWE-476: NULL Pointer Dereference

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-6356 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

RHSA-2024:0723vendor-advisoryRHSA-2024:0724vendor-advisoryRHSA-2024:0725vendor-advisoryRHSA-2024:0881vendor-advisoryRHSA-2024:0897vendor-advisoryRHSA-2024:1248vendor-advisoryRHSA-2024:2094vendor-advisoryRHSA-2024:3810vendor-advisoryhttps://access.redhat.com/security/cve/CVE-2023-6356vendor-advisoryRHBZ#2254054vendor-advisory

CVSS Vector Radar Chart

6.5 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-476

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CVE-2023-6356 · Kernel: null pointer dereference in…