CVE-2020-8649
kernel: invalid read location in vgacon_invert_region function in drivers/video/console/vgacon.c
Severity Score
5.9
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region function in drivers/video/console/vgacon.c.
Se presenta una vulnerabilidad de uso de la memoria previamente liberada en el kernel de Linux versiones hasta 5.5.2, en la función vgacon_invert_region en el archivo drivers/video/console/vgacon.c.
A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console. An out-of-bounds read can occur, leaking information to the console.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-02-06 CVE Reserved
- 2020-02-06 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html | Mailing List |
|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.kernel.org/show_bug.cgi?id=206357 | 2024-08-04 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html | 2021-12-30 | |
| https://www.debian.org/security/2020/dsa-4698 | 2021-12-30 | |
| https://access.redhat.com/security/cve/CVE-2020-8649 | 2022-04-05 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1802555 | 2022-04-05 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | <= 5.5.2 Search vendor "Linux" for product "Linux Kernel" and version " <= 5.5.2" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.1 Search vendor "Opensuse" for product "Leap" and version "15.1" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||