CVE-2024-26587

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-26587
In the Linux kernel, the following vulnerability has been resolved: net: netdevsim: don't try to destroy PHC on VFs PHC gets initialized in nsim_init_netdevsim(), which is only called if (nsim_dev_port_is_pf()). Create a counterpart of nsim_init_netdevsim() and move the mock_phc_destroy() there. This fixes a crash trying to destroy netdevsim with VFs instantiated, as caught by running the devlink.sh test: BUG: kernel NULL pointer dereference, address: 00000000000000b8 RIP: 0010:mock_phc_destroy+0xd/0x30 Call Trace: <TASK> nsim_destroy+0x4a/0x70 [netdevsim] __nsim_dev_port_del+0x47/0x70 [netdevsim] nsim_dev_reload_destroy+0x105/0x120 [netdevsim] nsim_drv_remove+0x2f/0xb0 [netdevsim] device_release_driver_internal+0x1a1/0x210 bus_remove_device+0xd5/0x120 device_del+0x159/0x490 device_unregister+0x12/0x30 del_device_store+0x11a/0x1a0 [netdevsim] kernfs_fop_write_iter+0x130/0x1d0 vfs_write+0x30b/0x4b0 ksys_write+0x69/0xf0 do_syscall_64+0xcc/0x1e0 entry_SYSCALL_64_after_hwframe+0x6f/0x77

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/08aca65997fb6f233066883b1f1e653bcb1f26ca Patch
https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588 Patch
https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda Patch
Configurations

Configuration 1 (hide)

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

18 Mar 2024, 18:09

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca - () https://git.kernel.org/stable/c/08aca65997fb6f233066883b1f1e653bcb1f26ca - Patch
References () https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588 - () https://git.kernel.org/stable/c/c5068e442eed063d2f1658e6b6d3c1c6fcf1e588 - Patch
References () https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda - () https://git.kernel.org/stable/c/ea937f77208323d35ffe2f8d8fc81b00118bfcda - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: netdevsim: no intente destruir PHC en VF PHC se inicializa en nsim_init_netdevsim(), que sólo se llama si (nsim_dev_port_is_pf()). Cree una contraparte de nsim_init_netdevsim() y mueva el mock_phc_destroy() allí. Esto soluciona un fallo al intentar destruir netdevsim con VF instanciados, detectado al ejecutar la prueba devlink.sh: ERROR: desreferencia del puntero NULL del núcleo, dirección: 00000000000000b8 RIP: 0010:mock_phc_destroy+0xd/0x30 Seguimiento de llamadas: nsim_destroy+0x4a /0x70 [netdevsim] __nsim_dev_port_del+0x47/0x70 [netdevsim] nsim_dev_reload_destroy+0x105/0x120 [netdevsim] nsim_drv_remove+0x2f/0xb0 [netdevsim] dispositivo_release_driver_internal+0x1a1/0x210 bus_remove_device+0xd5/0x120 dispositivo_del+0x159/0x490 dispositivo_unregister+0x12/0x30 del_device_store +0x11a/0x1a0 [netdevsim] kernfs_fop_write_iter+0x130/0x1d0 vfs_write+0x30b/0x4b0 ksys_write+0x69/0xf0 do_syscall_64+0xcc/0x1e0 Entry_SYSCALL_64_after_hwframe+0x6f/0x77
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

22 Feb 2024, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-22 17:15

Updated : 2024-03-18 18:09

NVD link : CVE-2024-26587

Mitre link : CVE-2024-26587

CVE.ORG link : CVE-2024-26587

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference