CVE-2024-56654

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  3. CVE-2024-56654

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

I

n the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference: Note that the value returned by rcu_dereference() is valid only within the enclosing RCU read-side critical section [1]_. For example, the following is **not** legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* BUG!!! */ rcu_read_lock(); y = p->data; /* BUG!!! */ rcu_read_unlock();

References
Link Resource
https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b Patch
https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae Patch
https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
History

06 Jan 2025, 22:33

Type Values Removed Values Added
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: hci_event: Se solucionó el uso de rcu_read_(un)lock durante la iteración El uso de rcu_read_(un)lock mientras se está dentro de list_for_each_entry_rcu no es seguro ya que en la mayor parte de los casos las entradas obtenidas de esta manera se tratarán como rcu_dereference: Tenga en cuenta que el valor devuelto por rcu_dereference() solo es válido dentro de la sección crítica del lado de lectura de RCU [1]_. Por ejemplo, lo siguiente **no** es legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* ¡ERROR! */ rcu_read_lock(); y = p->data; /* ¡ERROR! */ rcu_read_unlock();
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b - () https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b - Patch
References () https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae - () https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae - Patch
References () https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104 - () https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104 - Patch

27 Dec 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-27 15:15

Updated : 2025-10-01 20:17

NVD link : CVE-2024-56654

Mitre link : CVE-2024-56654

CVE.ORG link : CVE-2024-56654

JSON object : View

Products Affected

linux

CWE
NVD-CWE-noinfo