Vulnerability Details : CVE-2020-28974
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.
Products affected by CVE-2020-28974
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-28974
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-28974
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.1
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:C |
3.9
|
8.5
|
NIST | |
5.0
|
MEDIUM | CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H |
0.3
|
4.7
|
NIST |
CWE ids for CVE-2020-28974
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-28974
-
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
[SECURITY] [DLA 2494-1] linux security updateThird Party Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7
Release Notes;Vendor Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
[SECURITY] [DLA 2483-1] linux-4.19 security updateThird Party Advisory
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http://www.openwall.com/lists/oss-security/2020/11/25/1
oss-security - Re: Linux kernel slab-out-of-bounds Read in fbconMailing List;Third Party Advisory
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https://security.netapp.com/advisory/ntap-20210108-0003/
CVE-2020-28974 Linux Kernel Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://seclists.org/oss-sec/2020/q4/104
oss-sec: Linux kernel slab-out-of-bounds Read in fbconExploit;Mailing List;Third Party Advisory
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