CVE-2024-26910

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-26910
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix performance regression in swap operation The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead. Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

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/653bc5e6d9995d7d5f497c665b321875a626161c Patch
https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747eb Patch
https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001 Patch
https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05 Patch
https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397 Patch
https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49 Patch
https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

29 Apr 2024, 19:14

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CWE CWE-362
References () https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161c - () https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161c - Patch
References () https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747eb - () https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747eb - Patch
References () https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001 - () https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001 - Patch
References () https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05 - () https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05 - Patch
References () https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397 - () https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397 - Patch
References () https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49 - () https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49 - Patch
References () https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225 - () https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: ipset: corrige la regresión de rendimiento en la operación de intercambio El parche "netfilter: ipset: corrige la condición de ejecución entre swap/destroy y add/del/test del lado del kernel", commit 28628fa9 corrige un condición de ejecución. Pero elsync_rcu() agregado a la función swap la ralentiza innecesariamente: se puede mover con seguridad para destruir y usar call_rcu() en su lugar. Eric Dumazet señaló que simplemente llamar a las funciones de destrucción como devolución de llamada de rcu no funciona: los conjuntos con tiempo de espera usan recolectores de basura que necesitan cancelarse en la destrucción y que pueden esperar. Por lo tanto, las funciones de destrucción se dividen en dos: cancelar los recolectores de basura de forma segura al ejecutar el comando recibido por netlink y mover la parte restante solo a la devolución de llamada de rcu.

17 Apr 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-04-17 16:15

Updated : 2024-04-29 19:14

NVD link : CVE-2024-26910

Mitre link : CVE-2024-26910

CVE.ORG link : CVE-2024-26910

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')