CVE-2021-47616

RDMA: Fix use-after-free in rxe_queue_cleanup

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:

RDMA: Fix use-after-free in rxe_queue_cleanup

On error handling path in rxe_qp_from_init() qp->sq.queue is freed and
then rxe_create_qp() will drop last reference to this object. qp clean up
function will try to free this queue one time and it causes UAF bug.

Fix it by zeroing queue pointer after freeing queue in rxe_qp_from_init().

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: RDMA: corrige el use-after-free en rxe_queue_cleanup En la ruta de manejo de errores en rxe_qp_from_init() qp->sq.queue se libera y luego rxe_create_qp() eliminará la última referencia a este objeto. La función de limpieza qp intentará liberar esta cola una vez y provocará un error UAF. Solucionarlo poniendo a cero el puntero de la cola después de liberar la cola en rxe_qp_from_init().

*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

2024-06-19 CVE Reserved
2024-06-19 CVE Published
2024-06-20 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source
https://git.kernel.org/stable/c/514aee660df493cd673154a6ba6bab745ec47b8c	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/acb53e47db1fbc7cd37ab10b46388f045a76e383	2021-12-17
https://git.kernel.org/stable/c/84b01721e8042cdd1e8ffeb648844a09cd4213e0	2021-11-25

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"				>= 5.15 < 5.15.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.10"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.15 < 5.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.16"		en		Affected