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
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
12.6%
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It
allows a malicious KVM guest to crash the host, when the host is running on
Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation
bug in the handling of the SRR1 register values.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 21.04 | noarch | linux | < 5.11.0-44.48 | UNKNOWN |
ubuntu | 21.10 | noarch | linux | < 5.13.0-23.23 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-92.103 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1061.64 | UNKNOWN |
ubuntu | 21.04 | noarch | linux-aws | < 5.11.0-1023.24 | UNKNOWN |
ubuntu | 21.10 | noarch | linux-aws | < 5.13.0-1008.9 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.11 | < 5.11.0-1023.24~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1061.64~18.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1065.68 | UNKNOWN |
ubuntu | 21.04 | noarch | linux-azure | < 5.11.0-1023.24 | UNKNOWN |
www.openwall.com/lists/oss-security/2021/10/28/1
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43056
git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337
git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337 (5.15-rc6)
launchpad.net/bugs/cve/CVE-2021-43056
lore.kernel.org/linuxppc-dev/[email protected]/T/#u
nvd.nist.gov/vuln/detail/CVE-2021-43056
security-tracker.debian.org/tracker/CVE-2021-43056
ubuntu.com/security/notices/USN-5139-1
ubuntu.com/security/notices/USN-5165-1
ubuntu.com/security/notices/USN-5208-1
ubuntu.com/security/notices/USN-5210-1
ubuntu.com/security/notices/USN-5218-1
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
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
12.6%