high
7.5
CWE
476
Advisory Published
CVE Published
CVE Published
Advisory Published
Updated

CVE-2023-32252: Linux Kernel ksmbd Session NULL Pointer Dereference Denial-of-Service Vulnerability

First published: Wed Jul 05 2023(Updated: )

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_LOGOFF commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

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

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<=6.3.9
Linux kernel
redhat/kernel<6.4
6.4
Linux Linux kernel>=5.15<6.1.29
Linux Linux kernel>=6.2<6.2.16
Linux Linux kernel>=6.3<6.3.2
All of
Netapp H300s Firmware
Netapp H300s
All of
Netapp H500s Firmware
Netapp H500s
All of
Netapp H700s Firmware
Netapp H700s
All of
Netapp H410s Firmware
Netapp H410s
All of
Netapp H410c Firmware
Netapp H410c
debian/linux
5.10.218-1
5.10.221-1
6.1.94-1
6.1.99-1
6.9.10-1
6.9.12-1
ubuntu/linux<5.15.0-94.104
5.15.0-94.104
ubuntu/linux<6.2.0-32.32
6.2.0-32.32
ubuntu/linux<6.4~
6.4~
ubuntu/linux-allwinner<6.4~
6.4~
ubuntu/linux-allwinner-5.19<6.4~
6.4~
ubuntu/linux-aws<5.15.0-1053.58
5.15.0-1053.58
ubuntu/linux-aws<6.2.0-1011.11
6.2.0-1011.11
ubuntu/linux-aws<6.4~
6.4~
ubuntu/linux-aws-5.0<6.4~
6.4~
ubuntu/linux-aws-5.15<5.15.0-1053.58~20.04.1
5.15.0-1053.58~20.04.1
ubuntu/linux-aws-5.15<6.4~
6.4~
ubuntu/linux-aws-5.19<6.4~
6.4~
ubuntu/linux-aws-5.4<6.4~
6.4~
ubuntu/linux-aws-6.2<6.2.0-1011.11~22.04.1
6.2.0-1011.11~22.04.1
ubuntu/linux-aws-6.2<6.4~
6.4~
ubuntu/linux-aws-6.5<6.4~
6.4~
ubuntu/linux-aws-fips<6.4~
6.4~
ubuntu/linux-aws-hwe<6.4~
6.4~
ubuntu/linux-azure<5.15.0-1056.64
5.15.0-1056.64
ubuntu/linux-azure<6.2.0-1011.11
6.2.0-1011.11
ubuntu/linux-azure<6.4~
6.4~
ubuntu/linux-azure-4.15<6.4~
6.4~
ubuntu/linux-azure-5.15<5.15.0-1056.64~20.04.1
5.15.0-1056.64~20.04.1
ubuntu/linux-azure-5.15<6.4~
6.4~
ubuntu/linux-azure-5.4<6.4~
6.4~
ubuntu/linux-azure-6.5<6.4~
6.4~
ubuntu/linux-azure-edge<6.4~
6.4~
ubuntu/linux-azure-fde<5.15.0-1056.64.1
5.15.0-1056.64.1
ubuntu/linux-azure-fde<6.4~
6.4~
ubuntu/linux-azure-fde-5.15<5.15.0-1056.64~20.04.1.1
5.15.0-1056.64~20.04.1.1
ubuntu/linux-azure-fde-5.15<6.4~
6.4~
ubuntu/linux-azure-fde-5.19<6.4~
6.4~
ubuntu/linux-azure-fips<6.4~
6.4~
ubuntu/linux-bluefield<5.15.0-1035.37
5.15.0-1035.37
ubuntu/linux-bluefield<6.4~
6.4~
ubuntu/linux-dell300x<6.4~
6.4~
ubuntu/linux-fips<6.4~
6.4~
ubuntu/linux-gcp<5.15.0-1051.59
5.15.0-1051.59
ubuntu/linux-gcp<6.2.0-1013.13
6.2.0-1013.13
ubuntu/linux-gcp<6.4~
6.4~
ubuntu/linux-gcp-4.15<6.4~
6.4~
ubuntu/linux-gcp-5.15<5.15.0-1051.59~20.04.1
5.15.0-1051.59~20.04.1
ubuntu/linux-gcp-5.15<6.4~
6.4~
ubuntu/linux-gcp-5.19<6.4~
6.4~
ubuntu/linux-gcp-5.4<6.4~
6.4~
ubuntu/linux-gcp-6.2<6.2.0-1013.13~22.04.1
6.2.0-1013.13~22.04.1
ubuntu/linux-gcp-6.5<6.4~
6.4~
ubuntu/linux-gcp-fips<6.4~
6.4~
ubuntu/linux-gke<5.15.0-1050.55
5.15.0-1050.55
ubuntu/linux-gke<6.4~
6.4~
ubuntu/linux-gke-4.15<6.4~
6.4~
ubuntu/linux-gke-5.0<6.4~
6.4~
ubuntu/linux-gke-5.15<6.4~
6.4~
ubuntu/linux-gke-5.4<6.4~
6.4~
ubuntu/linux-gkeop<5.15.0-1036.42
5.15.0-1036.42
ubuntu/linux-gkeop<6.4~
6.4~
ubuntu/linux-gkeop-5.15<5.15.0-1036.42~20.04.1
5.15.0-1036.42~20.04.1
ubuntu/linux-gkeop-5.15<6.4~
6.4~
ubuntu/linux-gkeop-5.4<6.4~
6.4~
ubuntu/linux-hwe<6.4~
6.4~
ubuntu/linux-hwe-5.15<5.15.0-94.104~20.04.1
5.15.0-94.104~20.04.1
ubuntu/linux-hwe-5.15<6.4~
6.4~
ubuntu/linux-hwe-5.4<6.4~
6.4~
ubuntu/linux-hwe-6.2<6.2.0-32.32~22.04.1
6.2.0-32.32~22.04.1
ubuntu/linux-hwe-6.2<6.4~
6.4~
ubuntu/linux-hwe-6.5<6.4~
6.4~
ubuntu/linux-hwe-edge<6.4~
6.4~
ubuntu/linux-ibm<5.15.0-1046.49
5.15.0-1046.49
ubuntu/linux-ibm<6.2.0-1009.9
6.2.0-1009.9
ubuntu/linux-ibm<6.4~
6.4~
ubuntu/linux-ibm-5.15<5.15.0-1046.49~20.04.1
5.15.0-1046.49~20.04.1
ubuntu/linux-ibm-5.15<6.4~
6.4~
ubuntu/linux-ibm-5.4<6.4~
6.4~
ubuntu/linux-intel<6.4~
6.4~
ubuntu/linux-intel-5.13<6.4~
6.4~
ubuntu/linux-intel-iotg<5.15.0-1047.53
5.15.0-1047.53
ubuntu/linux-intel-iotg<6.4~
6.4~
ubuntu/linux-intel-iotg-5.15<5.15.0-1048.54~20.04.1
5.15.0-1048.54~20.04.1
ubuntu/linux-intel-iotg-5.15<6.4~
6.4~
ubuntu/linux-iot<6.4~
6.4~
ubuntu/linux-kvm<5.15.0-1050.55
5.15.0-1050.55
ubuntu/linux-kvm<6.2.0-1012.12
6.2.0-1012.12
ubuntu/linux-kvm<6.4~
6.4~
ubuntu/linux-laptop<6.4~
6.4~
ubuntu/linux-lowlatency<5.15.0-94.104
5.15.0-94.104
ubuntu/linux-lowlatency<6.2.0-1012.12
6.2.0-1012.12
ubuntu/linux-lowlatency<6.4~
6.4~
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-94.104~20.04.1
5.15.0-94.104~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.4~
6.4~
ubuntu/linux-lowlatency-hwe-5.19<6.4~
6.4~
ubuntu/linux-lowlatency-hwe-6.2<6.2.0-1012.12~22.04.1
6.2.0-1012.12~22.04.1
ubuntu/linux-lowlatency-hwe-6.2<6.4~
6.4~
ubuntu/linux-lowlatency-hwe-6.5<6.4~
6.4~
ubuntu/linux-lts-xenial<6.4~
6.4~
ubuntu/linux-nvidia<5.15.0-1044.44
5.15.0-1044.44
ubuntu/linux-nvidia<6.4~
6.4~
ubuntu/linux-nvidia-6.5<6.4~
6.4~
ubuntu/linux-nvidia-6.8<6.4~
6.4~
ubuntu/linux-nvidia-lowlatency<6.4~
6.4~
ubuntu/linux-oem<6.4~
6.4~
ubuntu/linux-oem-5.10<6.4~
6.4~
ubuntu/linux-oem-5.14<6.4~
6.4~
ubuntu/linux-oem-5.17<6.4~
6.4~
ubuntu/linux-oem-5.6<6.4~
6.4~
ubuntu/linux-oem-6.0<6.4~
6.4~
ubuntu/linux-oem-6.1<6.1.0-1014.14
6.1.0-1014.14
ubuntu/linux-oem-6.1<6.4~
6.4~
ubuntu/linux-oem-6.5<6.4~
6.4~
ubuntu/linux-oem-6.8<6.4~
6.4~
ubuntu/linux-oem-osp1<6.4~
6.4~
ubuntu/linux-oracle<5.15.0-1051.57
5.15.0-1051.57
ubuntu/linux-oracle<6.2.0-1011.11
6.2.0-1011.11
ubuntu/linux-oracle<6.4~
6.4~
ubuntu/linux-oracle-5.0<6.4~
6.4~
ubuntu/linux-oracle-5.13<6.4~
6.4~
ubuntu/linux-oracle-5.15<5.15.0-1051.57~20.04.1
5.15.0-1051.57~20.04.1
ubuntu/linux-oracle-5.15<6.4~
6.4~
ubuntu/linux-oracle-5.4<6.4~
6.4~
ubuntu/linux-oracle-6.5<6.4~
6.4~
ubuntu/linux-raspi<5.15.0-1046.49
5.15.0-1046.49
ubuntu/linux-raspi<6.2.0-1012.14
6.2.0-1012.14
ubuntu/linux-raspi<6.4~
6.4~
ubuntu/linux-raspi-5.4<6.4~
6.4~
ubuntu/linux-raspi2<6.4~
6.4~
ubuntu/linux-riscv<6.2.0-32.32.2
6.2.0-32.32.2
ubuntu/linux-riscv<6.4~
6.4~
ubuntu/linux-riscv-5.15<5.15.0-1049.53~20.04.2
5.15.0-1049.53~20.04.2
ubuntu/linux-riscv-5.15<6.4~
6.4~
ubuntu/linux-riscv-6.5<6.4~
6.4~
ubuntu/linux-snapdragon<6.4~
6.4~
ubuntu/linux-starfive<6.2.0-1004.5
6.2.0-1004.5
ubuntu/linux-starfive<6.4~
6.4~
ubuntu/linux-starfive-5.19<6.4~
6.4~
ubuntu/linux-starfive-6.5<6.4~
6.4~
ubuntu/linux-xilinx-zynqmp<5.15.0-1027.31
5.15.0-1027.31
ubuntu/linux-xilinx-zynqmp<6.4~
6.4~

Remedy

https://git.kernel.org/linus/a848c4f15ab6d5d405dbee7de5da71839b2bf35e

Remedy

https://git.kernel.org/linus/f5c779b7ddbda30866cf2a27c63e34158f858c73

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=2219815

Remedy

https://www.zerodayinitiative.com/advisories/ZDI-CAN-20590/

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