Ubuntu.comUB:CVE-2020-28097CVE-2020-28097
5.9 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
0.001 Low
EPSS
Percentile
37.6%
The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software
scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka
CID-973c096f6a85.
Notes
| Author | Note |
|---|---|
| sbeattie | out-of-bounds reading in vgacon_scrolldelta. This BUG is caused by “soff” being negative after VT_RESIZE. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | linux | < 4.4.0-197.229) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux | < 4.15.0-126.129 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < 5.4.0-56.62 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | < 4.15.0-126.129~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-hwe-5.4 | < 5.4.0-56.62~18.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-197.229~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-kvm | < 4.15.0-1079.81 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-kvm | < 5.4.0-1028.29 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-kvm | < 4.4.0-1084.93) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1118.132) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
References
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45
github.com/torvalds/linux/commit/973c096f6a85e5b5f2a295126ba6928d9a6afd45
launchpad.net/bugs/cve/CVE-2020-28097
nvd.nist.gov/vuln/detail/CVE-2020-28097
seclists.org/oss-sec/2020/q3/176
security-tracker.debian.org/tracker/CVE-2020-28097
www.cve.org/CVERecord?id=CVE-2020-28097
www.openwall.com/lists/oss-security/2020/09/16/1
Related
5.9 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
0.001 Low
EPSS
Percentile
37.6%