Kernel: null pointer dereference in nvmet_tcp_execute_request
Summary
| CVE | CVE-2023-6535 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2024-02-07 21:15:08 UTC |
| Updated | 2026-11-05 12:17:36 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-476 | CWE-476 NULL Pointer Dereference
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 6.5 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-513.18.1.rt7.320.el8_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-513.18.1.el8_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | unaffected 0:4.18.0-372.91.1.el8_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | unaffected 0:4.18.0-477.58.1.el8_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.24.1.el9_3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.24.1.el9_3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:5.14.0-284.52.1.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:5.14.0-284.52.1.rt14.337.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Virtualization 4 For Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-372.91.1.el8_6 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-22 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-11 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v6.8.1-407 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-19 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v1.0.0-479 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-7 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.4.0-247 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-5 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v1.1.0-227 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.1-470 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v2.9.6-14 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-2 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-24 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-10 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.1.0-525 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.1.0-224 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.28.1-56 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| bugzilla.redhat.com/show_bug.cgi | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking |
| access.redhat.com/errata/RHSA-2024:2094 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| lists.fedoraproject.org/archives/list/[email protected]/messag... | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| lists.debian.org/debian-lts-announce/2024/06/msg00016.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| access.redhat.com/errata/RHSA-2024:0723 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:0725 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:0897 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| access.redhat.com/errata/RHSA-2024:1248 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| access.redhat.com/errata/RHSA-2024:0724 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:3810 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| access.redhat.com/errata/RHSA-2024:0881 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2023-6535 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| security.netapp.com/advisory/ntap-20240415-0003 | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank Alon Zahavi for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2023-12-11T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2023-12-11T00:00:00.000Z | Made public. |
Workarounds
CNA: To mitigate this issue, prevent module nvmet-tcp from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Legacy QID Mappings
- 161372 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-12169)
- 161402 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-0897)
- 161417 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-1248)
- 242887 Red Hat Update for kernel-rt (RHSA-2024:0725)
- 242890 Red Hat Update for kernel (RHSA-2024:0724)
- 242908 Red Hat Update for kernel (RHSA-2024:0723)
- 242939 Red Hat Update for kernel (RHSA-2024:0897)
- 242983 Red Hat Update for kernel-rt (RHSA-2024:0881)
- 243052 Red Hat Update for kernel (RHSA-2024:1248)
- 284894 Fedora Security Update for kernel (FEDORA-2024-0f89e13079)
- 285011 Fedora Security Update for kernel (FEDORA-2024-50ab089b1d)
- 755747 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0469-1)
- 755750 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0476-1)
- 755751 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0474-1)
- 755752 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0478-1)
- 755753 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0484-1)
- 755754 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0516-1)
- 755755 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0515-1)
- 755756 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0514-1)
- 755988 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0975-1)
- 941584 AlmaLinux Security Update for kernel (ALSA-2024:0897)