Vulnerability Details : CVE-2021-26931

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.
Published 2021-02-17 02:15:13
Updated 2022-06-04 02:02:17
Source MITRE
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-26931

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 12 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-26931

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
1.9
LOW AV:L/AC:M/Au:N/C:N/I:N/A:P
3.4
2.9
[email protected]
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.8
3.6
[email protected]

CWE ids for CVE-2021-26931

References for CVE-2021-26931

Products affected by CVE-2021-26931

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