8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.008 Low
EPSS
Percentile
81.6%
An issue was discovered in the Linux kernel before 4.20. There is a race
condition in smp_task_timedout() and smp_task_done() in
drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.
Author | Note |
---|---|
sbeattie | hard to see how this can be attacker controlled |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-44.47 | UNKNOWN |
ubuntu | 18.10 | noarch | linux | < 4.18.0-14.15 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-157.185 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1032.34 | UNKNOWN |
ubuntu | 18.10 | noarch | linux-aws | < 4.18.0-1008.10 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1090.101 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1032.34~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 4.15.0-1037.39 | UNKNOWN |
ubuntu | 18.10 | noarch | linux-azure | < 4.18.0-1008.8 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1037.39~16.04.1 | UNKNOWN |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae
launchpad.net/bugs/cve/CVE-2018-20836
nvd.nist.gov/vuln/detail/CVE-2018-20836
security-tracker.debian.org/tracker/CVE-2018-20836
ubuntu.com/security/notices/USN-4076-1
www.cve.org/CVERecord?id=CVE-2018-20836
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.008 Low
EPSS
Percentile
81.6%