CVE-2021-47086

phonet/pep: refuse to enable an unbound pipe

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:

phonet/pep: refuse to enable an unbound pipe

This ioctl() implicitly assumed that the socket was already bound to
a valid local socket name, i.e. Phonet object. If the socket was not
bound, two separate problems would occur:

1) We'd send an pipe enablement request with an invalid source object.
2) Later socket calls could BUG on the socket unexpectedly being
connected yet not bound to a valid object.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: phonet/pep: se niega a habilitar una tubería independiente. Este ioctl() supone implícitamente que el socket ya estaba vinculado a un nombre de socket local válido, es decir, objeto Phonet. Si el socket no estuviera vinculado, se producirían dos problemas distintos: 1) Enviamos una solicitud de habilitación de canalización con un objeto fuente no válido. 2) Las llamadas de socket posteriores podrían ERROR en el socket que se conecta inesperadamente pero no está vinculado a un objeto válido.

*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

2024-02-29 CVE Reserved
2024-03-04 CVE Published
2024-03-05 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59	2021-12-29
https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca	2021-12-29
https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161	2021-12-29
https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235	2021-12-29
https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b	2021-12-29
https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52	2021-12-29
https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa	2021-12-29
https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068	2021-12-20

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"				< 4.4.297 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.297"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.9.295 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.295"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.260 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.260"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.223 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.223"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.169 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.169"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.89 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.89"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.12 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.16 Search vendor "Linux" for product "Linux Kernel" and version " < 5.16"		en		Affected