5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.8 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
12.3%
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.
CPE | Name | Operator | Version |
---|---|---|---|
debian_linux | eq | 9.0 | |
fedora | eq | 32 | |
fedora | eq | 33 | |
linux_kernel | ge | 2.6.39 | |
linux_kernel | le | 5.10.16 |
xenbits.xen.org/xsa/advisory-362.html
lists.debian.org/debian-lts-announce/2021/03/msg00010.html
lists.debian.org/debian-lts-announce/2021/03/msg00035.html
lists.fedoraproject.org/archives/list/[email protected]/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63/
lists.fedoraproject.org/archives/list/[email protected]/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB/
security.netapp.com/advisory/ntap-20210326-0001/
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.8 Medium
AI Score
Confidence
High
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:N/I:N/A:P
0.0004 Low
EPSS
Percentile
12.3%