4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0005 Low
EPSS
Percentile
15.7%
An issue was discovered in the Linux kernel before 5.11.8.
kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on
pointer arithmetic, leading to side-channel attacks that defeat Spectre
mitigations and obtain sensitive information from kernel memory, aka
CID-f232326f6966. This affects pointer types that do not define a
ptr_limit.
Author | Note |
---|---|
alexmurray | According to the upstream advisory, f232326f6966cf2a1d1db7bc917a4ce5f9f55f76 is the minimal fix but the whole series should be applied together |
sbeattie | kernels before 4.15 are not affected by this. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-140.144 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-70.78 | UNKNOWN |
ubuntu | 20.10 | noarch | linux | < 5.8.0-48.54 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1097.104 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1041.43 | UNKNOWN |
ubuntu | 20.10 | noarch | linux-aws | < 5.8.0-1027.29 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1041.43~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1097.104~16.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1043.45 | UNKNOWN |
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0005 Low
EPSS
Percentile
15.7%