CVE-2021-27363

CVE Details

Release Date:2021-04-22

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//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.

See more information about CVE-2021-27363 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: Base Metrics:
Access Vector: Undefined Attack Complexity: Undefined
Privileges Required: None User Interaction: None
Scope: Unchanged Confidentiality Impact: Undefined
Integrity Impact: Undefined Availability Impact: Undefined

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (kernel-uek)ELSA-2021-91132021-03-17
Oracle Linux version 6 (kernel-uek)ELSA-2021-91642021-04-08
Oracle Linux version 7 (kernel)ELSA-2021-10712021-04-07
Oracle Linux version 7 (kernel-uek)ELSA-2021-91122021-03-17
Oracle Linux version 7 (kernel-uek)ELSA-2021-91132021-03-17
Oracle Linux version 7 (kernel-uek)ELSA-2021-91142021-03-17
Oracle Linux version 7 (kernel-uek)ELSA-2021-91402021-03-31
Oracle Linux version 7 (kernel-uek)ELSA-2021-91642021-04-08
Oracle Linux version 7 (kernel-uek)ELSA-2021-91722021-04-12
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91152021-03-17
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91162021-03-18
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91412021-03-31
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91752021-04-13
Oracle Linux version 8 (kernel)ELSA-2021-10932021-04-07
Oracle Linux version 8 (kernel-uek)ELSA-2021-91142021-03-17
Oracle Linux version 8 (kernel-uek)ELSA-2021-91402021-03-31
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-91152021-03-17
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-91412021-03-31
Oracle VM version 3.4 (kernel-uek)OVMSA-2021-00082021-03-18



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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