High severity · published May 26, 2021
CVE-2020-25668
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op
7.0
CVSS
1%
EPSS
No
On KEV
Description
A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 4.4.242; 4.5 before 4.9.242; 4.10 before 4.14.204; 4.15 before 4.19.155; 4.20 before 5.4.75; 5.5 before 5.9.5 · source: NVD
5F
500f Firmware · Netapp
All versions, or not specified · source: NVD
AF
A250 Firmware · Netapp
All versions, or not specified · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
HF
H300e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H700e Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25668
Exploit
http://www.openwall.com/lists/oss-security/2020/10/30/1
Exploit
http://www.openwall.com/lists/oss-security/2020/11/04/3
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1893287%2C
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220
Mailing List
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Mailing List
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
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