Kernel: use after free in nvmet_tcp_free_crypto in nvme

Description

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.

Scores

EPSS (exploitation in 30 days)

9.6% · top 4.5% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

• CWE-416: Use After Free (opens in a new tab)All about CWE-416 and its CVEs

Affected products

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:4.18.0-513.9.1.rt7.311.el8_9 – < *

• Red Hat · Red Hat Enterprise Linux 8

  • unaffected 0:4.18.0-513.9.1.el8_9 – < *

• Red Hat · Red Hat Enterprise Linux 8

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update Support

  • unaffected 0:4.18.0-193.128.1.el8_2 – < *

• Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update Service

  • unaffected 0:4.18.0-193.128.1.rt13.179.el8_2 – < *

• Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update Service

  • unaffected 0:4.18.0-193.128.1.el8_2 – < *

• Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

  • unaffected 0:4.18.0-193.128.1.el8_2 – < *

• Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

  • unaffected 0:4.18.0-305.114.1.el8_4 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update Service

  • unaffected 0:4.18.0-305.114.1.rt7.190.el8_4 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update Service

  • unaffected 0:4.18.0-305.114.1.el8_4 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

  • unaffected 0:4.18.0-305.114.1.el8_4 – < *

• Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support

  • unaffected 0:4.18.0-372.87.1.el8_6 – < *

• Red Hat · Red Hat Enterprise Linux 8.8 Extended Update Support

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 8.8 Extended Update Support

  • unaffected 0:4.18.0-477.43.1.el8_8 – < *

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:5.14.0-362.18.1.el9_3 – < *

• Red Hat · Red Hat Enterprise Linux 9

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 9

  • unaffected 0:5.14.0-362.18.1.el9_3 – < *

• Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support

  • unaffected 0:5.14.0-70.85.1.el9_0 – < *

• Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support

  • unaffected 0:5.14.0-70.85.1.rt21.156.el9_0 – < *

• Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support

  • unaffected 0:5.14.0-284.40.1.el9_2 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support

  • unaffected 0:5.14.0-284.40.1.rt14.325.el9_2 – < *

• Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support

  All versions: unaffected

• Red Hat · Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

  • unaffected 0:4.18.0-372.87.1.el8_6 – < *

• Red Hat · Red Hat Enterprise Linux 6

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 7

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 7

  All versions: unaffected

• Red Hat · Red Hat Enterprise Linux 9

  All versions: affected

What to do

Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

References (28)

• RHSA-2023:7370 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7379 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7418 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7548 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7549 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7551 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7554 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7557 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2023:7559 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0340 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0378 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0386 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0412 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0431 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0432 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0461 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0554 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:0575 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:1268 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:1269 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2024:1278 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://access.redhat.com/security/cve/CVE-2023-5178 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
• RHBZ#2241924 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
• https://lore.kernel.org/linux-nvme/[email protected]/ (opens in a new tab)x_transferred
• https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html (opens in a new tab)x_transferred
• https://security.netapp.com/advisory/ntap-20231208-0004/ (opens in a new tab)x_transferred
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html (opens in a new tab)
• https://cert-portal.siemens.com/productcert/html/ssa-613116.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-5178](https://trackcve.app/badge/CVE-2023-5178.svg)](https://trackcve.app/cve/CVE-2023-5178)

Record last updated 14 Oct 2026, 21:54 UTC.