CVE-2024-56647

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56647
In the Linux kernel, the following vulnerability has been resolved: net: Fix icmp host relookup triggering ip_rt_bug arp link failure may trigger ip_rt_bug while xfrm enabled, call trace is: WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1241 ip_rt_bug+0x14/0x20 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc6-00077-g2e1b3cc9d7f7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:ip_rt_bug+0x14/0x20 Call Trace: <IRQ> ip_send_skb+0x14/0x40 __icmp_send+0x42d/0x6a0 ipv4_link_failure+0xe2/0x1d0 arp_error_report+0x3c/0x50 neigh_invalidate+0x8d/0x100 neigh_timer_handler+0x2e1/0x330 call_timer_fn+0x21/0x120 __run_timer_base.part.0+0x1c9/0x270 run_timer_softirq+0x4c/0x80 handle_softirqs+0xac/0x280 irq_exit_rcu+0x62/0x80 sysvec_apic_timer_interrupt+0x77/0x90 The script below reproduces this scenario: ip xfrm policy add src 0.0.0.0/0 dst 0.0.0.0/0 \ dir out priority 0 ptype main flag localok icmp ip l a veth1 type veth ip a a 192.168.141.111/24 dev veth0 ip l s veth0 up ping 192.168.141.155 -c 1 icmp_route_lookup() create input routes for locally generated packets while xfrm relookup ICMP traffic.Then it will set input route (dst->out = ip_rt_bug) to skb for DESTUNREACH. For ICMP err triggered by locally generated packets, dst->dev of output route is loopback. Generally, xfrm relookup verification is not required on loopback interfaces (net.ipv4.conf.lo.disable_xfrm = 1). Skip icmp relookup for locally generated packets to fix it.

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/9545011e7b2a8fc0cbd6e387a09f12cd41d7d82f Patch
https://git.kernel.org/stable/c/c44daa7e3c73229f7ac74985acb8c7fb909c4e0a Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
History

06 Jan 2025, 19:45

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/9545011e7b2a8fc0cbd6e387a09f12cd41d7d82f - () https://git.kernel.org/stable/c/9545011e7b2a8fc0cbd6e387a09f12cd41d7d82f - Patch
References () https://git.kernel.org/stable/c/c44daa7e3c73229f7ac74985acb8c7fb909c4e0a - () https://git.kernel.org/stable/c/c44daa7e3c73229f7ac74985acb8c7fb909c4e0a - Patch
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: Fix icmp host relookup triggering ip_rt_bug arp link failure may trigger ip_rt_bug while xfrm enabled, call trace is: ADVERTENCIA: CPU: 0 PID: 0 en net/ipv4/route.c:1241 ip_rt_bug+0x14/0x20 Módulos vinculados en: CPU: 0 UID: 0 PID: 0 Comm: swapper/0 No contaminado 6.12.0-rc6-00077-g2e1b3cc9d7f7 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 01/04/2014 RIP: 0010:ip_rt_bug+0x14/0x20 Seguimiento de llamadas: ip_send_skb+0x14/0x40 __icmp_send+0x42d/0x6a0 error de enlace ipv4+0xe2/0x1d0 informe de error arp+0x3c/0x50 invalidación vecinal+0x8d/0x100 controlador de temporizador vecinal+0x2e1/0x330 función de temporizador de llamada+0x21/0x120 __base de temporizador de ejecución.parte.0+0x1c9/0x270 temporizador de ejecución softirq+0x4c/0x80 controlador de softirqs+0xac/0x280 irq_exit_rcu+0x62/0x80 sysvec_apic_timer_interrupt+0x77/0x90 El script a continuación reproduce este escenario: ip xfrm policy add src 0.0.0.0/0 dst 0.0.0.0/0 \ dir out priority 0 ptype main flag localok icmp ip la veth1 type veth ip aa 192.168.141.111/24 dev veth0 ip ls veth0 up ping 192.168.141.155 -c 1 icmp_route_lookup() crea rutas de entrada para paquetes generados localmente mientras xfrm vuelve a buscar tráfico ICMP. Luego, establecerá la ruta de entrada (dst-&gt;out = ip_rt_bug) en skb para DESTUNREACH. Para el error ICMP activado por paquetes generados localmente, dst-&gt;dev de la ruta de salida es loopback. En general, no se requiere la verificación de rebúsqueda de xfrm en interfaces de bucle invertido (net.ipv4.conf.lo.disable_xfrm = 1). Omita la rebúsqueda de ICMP para paquetes generados localmente para solucionarlo.
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

27 Dec 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-27 15:15

Updated : 2025-01-06 19:45

NVD link : CVE-2024-56647

Mitre link : CVE-2024-56647

CVE.ORG link : CVE-2024-56647

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo