CVE-2021-47539

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47539
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix rxrpc_peer leak in rxrpc_look_up_bundle() Need to call rxrpc_put_peer() for bundle candidate before kfree() as it holds a ref to rxrpc_peer. [DH: v2: Changed to abstract out the bundle freeing code into a function]

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b Patch
https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 Patch
https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e Patch
https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b Patch
https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 Patch
https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*
History

18 Sep 2025, 15:55

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b - () https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b - Patch
References () https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 - () https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 - Patch
References () https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e - () https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
CWE CWE-401
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

21 Nov 2024, 06:36

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b - () https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b -
References () https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 - () https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 -
References () https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e - () https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e -
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: rxrpc: corrige la fuga de rxrpc_peer en rxrpc_look_up_bundle() Es necesario llamar a rxrpc_put_peer() para el paquete candidato antes de kfree(), ya que contiene una referencia a rxrpc_peer. [DH: v2: modificado para abstraer el código de liberación del paquete en una función]

24 May 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-24 15:15

Updated : 2025-09-18 15:55

NVD link : CVE-2021-47539

Mitre link : CVE-2021-47539

CVE.ORG link : CVE-2021-47539

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime