CVE
CVE-2021-27363
| CVE ID |
CVE-2021-27363
|
|---|---|
| CVSS Score |
4.4
|
| Operating System | |
| Affected Versions |
CentOS 6
|
| Patched Versions |
2.6.32-754.35.1_ol007.el6
|
| Patch Date |
|
Additional Information
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.