// For flags

CVE-2019-12382

kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service

Severity Score

5.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel through 5.1.5. There is an unchecked kstrdup of fwstr, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: The vendor disputes this issues as not being a vulnerability because kstrdup() returning NULL is handled sufficiently and there is no chance for a NULL pointer dereference

** EN DISPUTA ** Un problema fue encontrado en la función drm_load_edid_firmware en el archivo driver/gpu/drm/drm_edid_load.c en el kernel de Linux hasta la versión 5.1.5. Se presenta un kstrdup sin comprobar de fwstr, que podría permitir que un atacante genere una Denegación de Servicio (desreferencia de puntero NULL y bloqueo del sistema). NOTA: El proveedor niega que estos problemas no sean una vulnerabilidad porque kstrdup () que devuelve NULL se trata de manera suficiente y no hay posibilidad de que se elimine la referencia al puntero NULL.

A flaw was found in the Linux kernel’s implementation of Extended Display Identification Data (EDID) technology. A firmware identifier string is duplicated with the kstrdup function, and the allocation may fail under very low memory conditions. An attacker could abuse this flaw by causing a Denial of Service and crashing the system.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-05-27 CVE Reserved
  • 2019-05-28 CVE Published
  • 2024-05-21 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-476: NULL Pointer Dereference
CAPEC
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"
 <= 5.1.5
Search vendor "Linux" for product "Linux Kernel" and version " <= 5.1.5"
-
Affected