5 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
6.1 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:P/I:P/A:C
0.0004 Low
EPSS
Percentile
5.3%
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could
be used by local attackers to read privileged information or potentially
crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY
in drivers/tty/vt/vt.c can be used for manipulations such as font height.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-129.132 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-59.65 | UNKNOWN |
ubuntu | 20.10 | noarch | linux | < 5.8.0-44.50 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-198.230 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1091.96 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1034.35 | UNKNOWN |
ubuntu | 20.10 | noarch | linux-aws | < 5.8.0-1024.26 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1083.87) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1119.133 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1034.35~18.04.1 | UNKNOWN |
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7
git.kernel.org/linus/3c4e0dff2095c579b142d5a0693257f1c58b4804
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804
launchpad.net/bugs/cve/CVE-2020-28974
nvd.nist.gov/vuln/detail/CVE-2020-28974
seclists.org/oss-sec/2020/q4/104
security-tracker.debian.org/tracker/CVE-2020-28974
ubuntu.com/security/notices/USN-4679-1
ubuntu.com/security/notices/USN-4680-1
ubuntu.com/security/notices/USN-4681-1
ubuntu.com/security/notices/USN-4683-1
ubuntu.com/security/notices/USN-4751-1
www.cve.org/CVERecord?id=CVE-2020-28974
www.openwall.com/lists/oss-security/2020/11/09/2
5 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
6.1 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:P/I:P/A:C
0.0004 Low
EPSS
Percentile
5.3%