CVE-2021-26930
- ULN >
- Oracle Linux CVE repository >
- CVE-2021-26930
CVE Details
| Release Date: | 2021-02-17 | |
| Impact: | None | What is this? |
Description
An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.
See more information about CVE-2021-26930 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 7.8 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9051 | 2021-02-16 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9079 | 2021-03-03 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9051 | 2021-02-16 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9052 | 2021-02-16 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9053 | 2021-02-16 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9067 | 2021-02-19 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9079 | 2021-03-03 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9135 | 2021-03-24 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9057 | 2021-02-16 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9058 | 2021-02-17 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9068 | 2021-02-19 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9086 | 2021-03-09 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9136 | 2021-03-24 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9053 | 2021-02-16 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9085 | 2021-03-11 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9057 | 2021-02-16 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9086 | 2021-03-09 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2021-0006 | 2021-02-17 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2021-0007 | 2021-03-04 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections:
- Oracle customers - enter a support request
- Vulnerability scanning tools vendors and project maintainers - follow the standard ISV process
