CVE-2021-27363

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 products

Alt Linux, Almalinux, Centos, Linuxmint, Linux Kernel, Red Hat, Red Os, Suse

Linux Linux Kernel

≤ 5.11.3

CVSS 3.1

4.4 MEDIUM

EPSS

0.7% (51th percentile)

NVD status

Modified

Published

2021-03-07

No exploit for CVE-2021-27363 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.