CVE-2024-26777

fbdev: sis: Error out if pixclock equals zero

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

fbdev: sis: Error out if pixclock equals zero

The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn't check the value of pixclock,
it may cause divide-by-zero error.

In sisfb_check_var(), var->pixclock is used as a divisor to caculate
drate before it is checked against zero. Fix this by checking it
at the beginning.

This is similar to CVE-2022-3061 in i740fb which was fixed by
commit 15cf0b8.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: sis: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). Si el controlador no verifica el valor de pixclock, puede causar un error de división por cero. En sisfb_check_var(), var->pixclock se usa como divisor para calcular la velocidad antes de compararla con cero. Solucione este problema marcándolo al principio. Esto es similar a CVE-2022-3061 en i740fb que se solucionó mediante el commit 15cf0b8.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-03 CVE Published
2024-04-04 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (10)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e	2024-03-01
https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207	2024-03-01
https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313	2024-03-01
https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1	2024-03-01
https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99	2024-03-01
https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb	2024-03-01
https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b	2024-03-01
https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52	2024-01-21

URL	Date	SRC

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"				< 4.19.308 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.308"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.270 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.270"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.211 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.211"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.150 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.150"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.80 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.80"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.19 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.19"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.7.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7.7"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.8 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8"		en		Affected