Ubuntu.comUB:CVE-2020-27820CVE-2020-27820
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
14.5%
A vulnerability was found in Linux kernel, where a use-after-frees in
nouveau’s postclose() handler could happen if removing device (that is not
common to remove video card physically without power-off, but same happens
if “unbind” the driver).
Bugs
Notes
| Author | Note |
|---|---|
| sbeattie | likely only goes back to 5.4 kernels |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < 5.4.0-110.124 | UNKNOWN |
| ubuntu | 21.10 | noarch | linux | < 5.13.0-28.31 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-224.257) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1073.78 | UNKNOWN |
| ubuntu | 21.10 | noarch | linux-aws | < 5.13.0-1012.13 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1104.109) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1140.154) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.11 | < 5.11.0-1028.31~20.04.1 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2020-27820
lore.kernel.org/dri-devel/[email protected]/
nvd.nist.gov/vuln/detail/CVE-2020-27820
security-tracker.debian.org/tracker/CVE-2020-27820
ubuntu.com/security/notices/USN-5265-1
ubuntu.com/security/notices/USN-5278-1
ubuntu.com/security/notices/USN-5413-1
ubuntu.com/security/notices/USN-5415-1
www.cve.org/CVERecord?id=CVE-2020-27820
Related
4.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
14.5%