CVE-2021-26930

CVE Details

Release Date:2021-03-23

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


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-2021-90512021-02-16
Oracle Linux version 6 (kernel-uek)ELSA-2021-90792021-03-03
Oracle Linux version 7 (kernel-uek)ELSA-2021-90512021-02-16
Oracle Linux version 7 (kernel-uek)ELSA-2021-90522021-02-16
Oracle Linux version 7 (kernel-uek)ELSA-2021-90532021-02-16
Oracle Linux version 7 (kernel-uek)ELSA-2021-90672021-02-19
Oracle Linux version 7 (kernel-uek)ELSA-2021-90792021-03-03
Oracle Linux version 7 (kernel-uek)ELSA-2021-91352021-03-24
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-90572021-02-16
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-90582021-02-17
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-90682021-02-19
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-90862021-03-09
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91362021-03-24
Oracle Linux version 8 (kernel-uek)ELSA-2021-90532021-02-16
Oracle Linux version 8 (kernel-uek)ELSA-2021-90852021-03-11
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-90572021-02-16
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-90862021-03-09
Oracle VM version 3.4 (kernel-uek)OVMSA-2021-00062021-02-17
Oracle VM version 3.4 (kernel-uek)OVMSA-2021-00072021-03-04



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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