CVE-2024-38659

enic: Validate length of nl attributes in enic_set_vf_port

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:

enic: Validate length of nl attributes in enic_set_vf_port

enic_set_vf_port assumes that the nl attribute IFLA_PORT_PROFILE
is of length PORT_PROFILE_MAX and that the nl attributes
IFLA_PORT_INSTANCE_UUID, IFLA_PORT_HOST_UUID are of length PORT_UUID_MAX.
These attributes are validated (in the function do_setlink in rtnetlink.c)
using the nla_policy ifla_port_policy. The policy defines IFLA_PORT_PROFILE
as NLA_STRING, IFLA_PORT_INSTANCE_UUID as NLA_BINARY and
IFLA_PORT_HOST_UUID as NLA_STRING. That means that the length validation
using the policy is for the max size of the attributes and not on exact
size so the length of these attributes might be less than the sizes that
enic_set_vf_port expects. This might cause an out of bands
read access in the memcpys of the data of these
attributes in enic_set_vf_port.

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: enic: Validar la longitud de los atributos nl en enic_set_vf_port enic_set_vf_port supone que el atributo nl IFLA_PORT_PROFILE tiene una longitud PORT_PROFILE_MAX y que los atributos nl IFLA_PORT_INSTANCE_UUID, IFLA_PORT_HOST_UUID tienen una longitud PORT_UUID_MAX. Estos atributos se validan (en la función do_setlink en rtnetlink.c) usando nla_policy ifla_port_policy. La política define IFLA_PORT_PROFILE como NLA_STRING, IFLA_PORT_INSTANCE_UUID como NLA_BINARY e IFLA_PORT_HOST_UUID como NLA_STRING. Eso significa que la validación de longitud que utiliza la política es para el tamaño máximo de los atributos y no para el tamaño exacto, por lo que la longitud de estos atributos puede ser menor que los tamaños que espera enic_set_vf_port. Esto podría causar un acceso de lectura fuera de banda en los memcpys de los datos de estos atributos en enic_set_vf_port.

*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

2024-06-21 CVE Reserved
2024-06-21 CVE Published
2024-06-22 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source
https://git.kernel.org/stable/c/f8bd909183acffad68780b10c1cdf36161cfd5d1	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/2b649d7e0cb42a660f0260ef25fd55fdc9c6c600	2024-06-16
https://git.kernel.org/stable/c/ca63fb7af9d3e531aa25f7ae187bfc6c7166ec2d	2024-06-16
https://git.kernel.org/stable/c/3c0d36972edbe56fcf98899622d9b90ac9965227	2024-06-16
https://git.kernel.org/stable/c/25571a12fbc8a1283bd8380d461267956fd426f7	2024-06-16
https://git.kernel.org/stable/c/7077c22f84f41974a711604a42fd0e0684232ee5	2024-06-12
https://git.kernel.org/stable/c/f6638e955ca00c489894789492776842e102af9c	2024-06-12
https://git.kernel.org/stable/c/aee1955a1509a921c05c70dad5d6fc8563dfcb31	2024-06-12
https://git.kernel.org/stable/c/e8021b94b0412c37bcc79027c2e382086b6ce449	2024-05-27

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"				>= 2.6.35 < 4.19.316 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 4.19.316"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 5.4.278 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 5.4.278"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 5.10.219 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 5.10.219"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 5.15.161 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 5.15.161"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 6.1.93 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 6.1.93"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 6.6.33 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 6.6.33"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 6.9.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 6.9.4"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 2.6.35 < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.35 < 6.10"		en		Affected