CVE-2021-26931

CVE Details

Release Date:2021-03-23

Description


An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

See more information about CVE-2021-26931 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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