CVE-2021-27363
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- CVE-2021-27363
CVE Details
| Release Date: | 2021-03-07 |
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: | 4.4 | Base Metrics: | AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
| Access Vector: | Local network | Attack Complexity: | Low |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | Low |
| Integrity Impact: | None | Availability Impact: | Low |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9113 | 2021-03-17 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9164 | 2021-04-08 |
| Oracle Linux version 7 (kernel) | ELSA-2021-1071 | 2021-04-07 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9112 | 2021-03-17 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9113 | 2021-03-17 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9114 | 2021-03-17 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9140 | 2021-03-31 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9164 | 2021-04-08 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9172 | 2021-04-12 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9115 | 2021-03-17 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9116 | 2021-03-18 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9141 | 2021-03-31 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9175 | 2021-04-13 |
| Oracle Linux version 8 (kernel) | ELSA-2021-1093 | 2021-04-07 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9114 | 2021-03-17 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9140 | 2021-03-31 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9115 | 2021-03-17 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9141 | 2021-03-31 |
| Oracle VM version 3 (kernel-uek) | OVMSA-2021-0010 | 2021-04-27 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2021-0008 | 2021-03-18 |
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