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CVE-2021-27363

Description

An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.


Affected Software


CPE Name Name Version
linux:linux_kernel linux linux kernel 5.11.3
debian:debian_linux debian debian linux 9.0
netapp:cloud_backup netapp cloud backup -
netapp:solidfire_baseboard_management_controller_firmware netapp solidfire baseboard management controller firmware -

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