CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
57.4%
Ryota Shiga discovered that the sockopt BPF hooks in the Linux kernel could
allow a user space program to probe for valid kernel addresses. A local
attacker could use this to ease exploitation of another kernel
vulnerability. (CVE-2021-20239)
It was discovered that the BPF verifier in the Linux kernel did not
properly handle signed add32 and sub integer overflows. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2021-20268)
It was discovered that the priority inheritance futex implementation in the
Linux kernel contained a race condition, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-3347)
It was discovered that the network block device (nbd) driver in the Linux
kernel contained a use-after-free vulnerability during device setup. A
local attacker with access to the nbd device could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2021-3348)
吴异 discovered that the NFS implementation in the Linux kernel did not
properly prevent access outside of an NFS export that is a subdirectory of
a file system. An attacker could possibly use this to bypass NFS access
restrictions. (CVE-2021-3178)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 20.10 | noarch | linux-image-5.8.0-1020-raspi | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-buildinfo-5.8.0-1020-raspi | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-headers-5.8.0-1020-raspi | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-image-5.8.0-1020-raspi-dbgsym | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-modules-5.8.0-1020-raspi | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-raspi-headers-5.8.0-1020 | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-raspi-tools-5.8.0-1020 | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-tools-5.8.0-1020-raspi | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-image-5.8.0-1020-raspi-nolpae | < 5.8.0-1020.23 | UNKNOWN |
Ubuntu | 20.10 | noarch | linux-image-5.8.0-1023-kvm | < 5.8.0-1023.25 | UNKNOWN |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
57.4%