medium
4.3
CWE
125 119
EPSS
0.111%
Advisory Published
CVE Published
Updated

CVE-2023-6121: Kernel: nvme: info leak due to out-of-bounds read in nvmet_ctrl_find_get

First published: Thu Nov 16 2023(Updated: )

An out-of-bounds read issue was found in the NVMe-oF/TCP subsystem in the Linux kernel. A remote attacker could send a crafted TCP packet triggering a heap-based buffer overflow that results in kmalloc data to be printed (and potentially leaked) to the kernel ring buffer (dmesg). Upstream refs: <a href="https://lore.kernel.org/linux-nvme/b58a2dc6-cc8f-4d19-9efe-e1d5b4505efc@nvidia.com/T/">https://lore.kernel.org/linux-nvme/b58a2dc6-cc8f-4d19-9efe-e1d5b4505efc@nvidia.com/T/</a> <a href="https://lore.kernel.org/linux-nvme/CAK5usQvxAyC3LJ4OnqerS1P0JpbfFr9uRZmq6Jb4QhaB7AQCoQ@mail.gmail.com/T/">https://lore.kernel.org/linux-nvme/CAK5usQvxAyC3LJ4OnqerS1P0JpbfFr9uRZmq6Jb4QhaB7AQCoQ@mail.gmail.com/T/</a>

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Redhat Enterprise Linux=6.0
Redhat Enterprise Linux=7.0
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
redhat/kernel<6.7
6.7
ubuntu/linux<4.15.0-223.235
4.15.0-223.235
ubuntu/linux<5.4.0-173.191
5.4.0-173.191
ubuntu/linux<5.15.0-100.110
5.15.0-100.110
ubuntu/linux<6.5.0-25.25
6.5.0-25.25
ubuntu/linux<6.7~
6.7~
ubuntu/linux-aws<4.15.0-1166.179
4.15.0-1166.179
ubuntu/linux-aws<5.4.0-1120.130
5.4.0-1120.130
ubuntu/linux-aws<5.15.0-1056.61
5.15.0-1056.61
ubuntu/linux-aws<6.5.0-1015.15
6.5.0-1015.15
ubuntu/linux-aws<6.7~
6.7~
ubuntu/linux-aws-5.15<5.15.0-1056.61~20.04.1
5.15.0-1056.61~20.04.1
ubuntu/linux-aws-5.15<6.7~
6.7~
ubuntu/linux-aws-5.4<5.4.0-1120.130~18.04.1
5.4.0-1120.130~18.04.1
ubuntu/linux-aws-5.4<6.7~
6.7~
ubuntu/linux-aws-6.5<6.5.0-1015.15~22.04.1
6.5.0-1015.15~22.04.1
ubuntu/linux-aws-6.5<6.7~
6.7~
ubuntu/linux-aws-fips<6.7~
6.7~
ubuntu/linux-aws-hwe<6.7~
6.7~
ubuntu/linux-aws-hwe<4.15.0-1166.179~16.04.1
4.15.0-1166.179~16.04.1
ubuntu/linux-azure<5.4.0-1126.133
5.4.0-1126.133
ubuntu/linux-azure<5.15.0-1058.66
5.15.0-1058.66
ubuntu/linux-azure<6.5.0-1016.16
6.5.0-1016.16
ubuntu/linux-azure<4.15.0-1175.190~14.04.1
4.15.0-1175.190~14.04.1
ubuntu/linux-azure<6.7~
6.7~
ubuntu/linux-azure<4.15.0-1175.190~16.04.1
4.15.0-1175.190~16.04.1
ubuntu/linux-azure-4.15<4.15.0-1175.190
4.15.0-1175.190
ubuntu/linux-azure-4.15<6.7~
6.7~
ubuntu/linux-azure-5.15<5.15.0-1058.66~20.04.2
5.15.0-1058.66~20.04.2
ubuntu/linux-azure-5.15<6.7~
6.7~
ubuntu/linux-azure-5.4<5.4.0-1126.133~18.04.1
5.4.0-1126.133~18.04.1
ubuntu/linux-azure-5.4<6.7~
6.7~
ubuntu/linux-azure-6.5<6.5.0-1016.16~22.04.1
6.5.0-1016.16~22.04.1
ubuntu/linux-azure-6.5<6.7~
6.7~
ubuntu/linux-azure-fde<5.15.0-1058.66.1
5.15.0-1058.66.1
ubuntu/linux-azure-fde<6.7~
6.7~
ubuntu/linux-azure-fde-5.15<5.15.0-1058.66~20.04.2.1
5.15.0-1058.66~20.04.2.1
ubuntu/linux-azure-fde-5.15<6.7~
6.7~
ubuntu/linux-azure-fips<6.7~
6.7~
ubuntu/linux-bluefield<5.4.0-1080.87
5.4.0-1080.87
ubuntu/linux-bluefield<6.7~
6.7~
ubuntu/linux-fips<6.7~
6.7~
ubuntu/linux-gcp<5.4.0-1124.133
5.4.0-1124.133
ubuntu/linux-gcp<5.15.0-1053.61
5.15.0-1053.61
ubuntu/linux-gcp<6.5.0-1015.15
6.5.0-1015.15
ubuntu/linux-gcp<6.7~
6.7~
ubuntu/linux-gcp<4.15.0-1160.177~16.04.1
4.15.0-1160.177~16.04.1
ubuntu/linux-gcp-4.15<4.15.0-1160.177
4.15.0-1160.177
ubuntu/linux-gcp-4.15<6.7~
6.7~
ubuntu/linux-gcp-5.15<5.15.0-1053.61~20.04.1
5.15.0-1053.61~20.04.1
ubuntu/linux-gcp-5.15<6.7~
6.7~
ubuntu/linux-gcp-5.4<5.4.0-1124.133~18.04.1
5.4.0-1124.133~18.04.1
ubuntu/linux-gcp-5.4<6.7~
6.7~
ubuntu/linux-gcp-6.5<6.5.0-1015.15~22.04.1
6.5.0-1015.15~22.04.1
ubuntu/linux-gcp-6.5<6.7~
6.7~
ubuntu/linux-gcp-fips<6.7~
6.7~
ubuntu/linux-gke<5.15.0-1052.57
5.15.0-1052.57
ubuntu/linux-gke<6.7~
6.7~
ubuntu/linux-gkeop<5.4.0-1087.91
5.4.0-1087.91
ubuntu/linux-gkeop<5.15.0-1038.44
5.15.0-1038.44
ubuntu/linux-gkeop<6.7~
6.7~
ubuntu/linux-gkeop-5.15<5.15.0-1038.44~20.04.1
5.15.0-1038.44~20.04.1
ubuntu/linux-gkeop-5.15<6.7~
6.7~
ubuntu/linux-hwe<6.7~
6.7~
ubuntu/linux-hwe<4.15.0-223.235~16.04.1
4.15.0-223.235~16.04.1
ubuntu/linux-hwe-5.15<5.15.0-100.110~20.04.1
5.15.0-100.110~20.04.1
ubuntu/linux-hwe-5.15<6.7~
6.7~
ubuntu/linux-hwe-5.4<5.4.0-173.191~18.04.1
5.4.0-173.191~18.04.1
ubuntu/linux-hwe-5.4<6.7~
6.7~
ubuntu/linux-hwe-6.5<6.5.0-25.25~22.04.1
6.5.0-25.25~22.04.1
ubuntu/linux-hwe-6.5<6.7~
6.7~
ubuntu/linux-ibm<5.4.0-1067.72
5.4.0-1067.72
ubuntu/linux-ibm<5.15.0-1048.51
5.15.0-1048.51
ubuntu/linux-ibm<6.7~
6.7~
ubuntu/linux-ibm-5.15<5.15.0-1048.51~20.04.1
5.15.0-1048.51~20.04.1
ubuntu/linux-ibm-5.15<6.7~
6.7~
ubuntu/linux-ibm-5.4<5.4.0-1067.72~18.04.1
5.4.0-1067.72~18.04.1
ubuntu/linux-ibm-5.4<6.7~
6.7~
ubuntu/linux-intel<6.7~
6.7~
ubuntu/linux-intel-iotg<5.15.0-1050.56
5.15.0-1050.56
ubuntu/linux-intel-iotg<6.7~
6.7~
ubuntu/linux-intel-iotg-5.15<5.15.0-1050.56~20.04.1
5.15.0-1050.56~20.04.1
ubuntu/linux-intel-iotg-5.15<6.7~
6.7~
ubuntu/linux-iot<5.4.0-1032.33
5.4.0-1032.33
ubuntu/linux-iot<6.7~
6.7~
ubuntu/linux-kvm<4.15.0-1150.155
4.15.0-1150.155
ubuntu/linux-kvm<5.4.0-1108.115
5.4.0-1108.115
ubuntu/linux-kvm<5.15.0-1052.57
5.15.0-1052.57
ubuntu/linux-kvm<6.7~
6.7~
ubuntu/linux-laptop<6.5.0-1011.14
6.5.0-1011.14
ubuntu/linux-laptop<6.7~
6.7~
ubuntu/linux-lowlatency<5.15.0-100.110
5.15.0-100.110
ubuntu/linux-lowlatency<6.5.0-25.25.1
6.5.0-25.25.1
ubuntu/linux-lowlatency<6.7~
6.7~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-100.110~20.04.1
5.15.0-100.110~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.7~
6.7~
ubuntu/linux-lowlatency-hwe-6.5<6.5.0-25.25.1~22.04.1
6.5.0-25.25.1~22.04.1
ubuntu/linux-lowlatency-hwe-6.5<6.7~
6.7~
ubuntu/linux-lts-xenial<6.7~
6.7~
ubuntu/linux-nvidia<5.15.0-1046.46
5.15.0-1046.46
ubuntu/linux-nvidia<6.7~
6.7~
ubuntu/linux-nvidia-6.5<6.7~
6.7~
ubuntu/linux-oem-6.1<6.1.0-1033.33
6.1.0-1033.33
ubuntu/linux-oem-6.1<6.7~
6.7~
ubuntu/linux-oem-6.5<6.5.0-1016.17
6.5.0-1016.17
ubuntu/linux-oem-6.5<6.7~
6.7~
ubuntu/linux-oem-6.8<6.7~
6.7~
ubuntu/linux-oracle<4.15.0-1129.140
4.15.0-1129.140
ubuntu/linux-oracle<5.4.0-1119.128
5.4.0-1119.128
ubuntu/linux-oracle<5.15.0-1053.59
5.15.0-1053.59
ubuntu/linux-oracle<6.5.0-1018.18
6.5.0-1018.18
ubuntu/linux-oracle<6.7~
6.7~
ubuntu/linux-oracle<4.15.0-1129.140~16.04.1
4.15.0-1129.140~16.04.1
ubuntu/linux-oracle-5.15<5.15.0-1053.59~20.04.1
5.15.0-1053.59~20.04.1
ubuntu/linux-oracle-5.15<6.7~
6.7~
ubuntu/linux-oracle-5.4<5.4.0-1119.128~18.04.1
5.4.0-1119.128~18.04.1
ubuntu/linux-oracle-5.4<6.7~
6.7~
ubuntu/linux-oracle-6.5<6.7~
6.7~
ubuntu/linux-raspi<5.4.0-1104.116
5.4.0-1104.116
ubuntu/linux-raspi<5.15.0-1048.51
5.15.0-1048.51
ubuntu/linux-raspi<6.5.0-1012.15
6.5.0-1012.15
ubuntu/linux-raspi<6.7.0-1001.1
6.7.0-1001.1
ubuntu/linux-raspi<6.7~
6.7~
ubuntu/linux-raspi-5.4<5.4.0-1104.116~18.04.1
5.4.0-1104.116~18.04.1
ubuntu/linux-raspi-5.4<6.7~
6.7~
ubuntu/linux-riscv<6.5.0-25.25.1
6.5.0-25.25.1
ubuntu/linux-riscv<6.7~
6.7~
ubuntu/linux-riscv-5.15<5.15.0-1051.55~20.04.1
5.15.0-1051.55~20.04.1
ubuntu/linux-riscv-5.15<6.7~
6.7~
ubuntu/linux-riscv-6.5<6.5.0-25.25.1~22.04.1
6.5.0-25.25.1~22.04.1
ubuntu/linux-riscv-6.5<6.7~
6.7~
ubuntu/linux-starfive<6.5.0-1009.10
6.5.0-1009.10
ubuntu/linux-starfive<6.7~
6.7~
ubuntu/linux-starfive-6.5<6.5.0-1009.10~22.04.1
6.5.0-1009.10~22.04.1
ubuntu/linux-starfive-6.5<6.7~
6.7~
ubuntu/linux-xilinx-zynqmp<5.4.0-1039.43
5.4.0-1039.43
ubuntu/linux-xilinx-zynqmp<6.7~
6.7~
debian/linux
5.10.218-1
5.10.221-1
6.1.94-1
6.1.99-1
6.9.9-1
6.9.10-1

Remedy

https://git.kernel.org/linus/a07b4970f464f13640e28e16dad6cfa33647cc99

Remedy

https://git.kernel.org/linus/1c22e0295a5eb571c27b53c7371f95699ef705ff

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-6121?

    CVE-2023-6121 is an out-of-bounds read vulnerability in the NVMe-oF/TCP subsystem in the Linux kernel.

  • How does CVE-2023-6121 affect the system?

    CVE-2023-6121 allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that could potentially lead to data leakage.

  • What is the severity of CVE-2023-6121?

    CVE-2023-6121 has a severity rating of medium with a CVSS score of 4.3.

  • How can I fix CVE-2023-6121?

    To fix CVE-2023-6121, users are advised to apply the appropriate security patches provided by their respective Linux distributions or vendor.

  • Where can I find more information about CVE-2023-6121?

    More information about CVE-2023-6121 can be found at the following references: [Red Hat Security Advisory](https://access.redhat.com/security/cve/CVE-2023-6121) and [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2250043).

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