CVE-2024-26866

In the Linux kernel, the following vulnerability has been resolved: spi: lpspi: Avoid potential use-after-free in probe() fsl_lpspi_probe() is allocating/disposing memory manually with spi_alloc_host()/spi_alloc_target(), but uses devm_spi_register_controller(). In case of error after the latter call the memory will be explicitly freed in the probe function by spi_controller_put() call, but used afterwards by "devm" management outside probe() (spi_unregister_controller() <- devm_spi_unregister() below). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000070 ... Call trace: kernfs_find_ns kernfs_find_and_get_ns sysfs_remove_group sysfs_remove_groups device_remove_attrs device_del spi_unregister_controller devm_spi_unregister release_nodes devres_release_all really_probe driver_probe_device __device_attach_driver bus_for_each_drv __device_attach device_initial_probe bus_probe_device deferred_probe_work_func process_one_work worker_thread kthread ret_from_fork

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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/1543418e82789cc383cd36d41469983c64e3fc7f	Patch
https://git.kernel.org/stable/c/2ae0ab0143fcc06190713ed81a6486ed0ad3c861	Patch
https://git.kernel.org/stable/c/996ce839606afd0fef91355627868022aa73eb68	Patch
https://git.kernel.org/stable/c/da83ed350e4604b976e94239b08d8e2e7eaee7ea	Patch
https://git.kernel.org/stable/c/1543418e82789cc383cd36d41469983c64e3fc7f	Patch
https://git.kernel.org/stable/c/2ae0ab0143fcc06190713ed81a6486ed0ad3c861	Patch
https://git.kernel.org/stable/c/996ce839606afd0fef91355627868022aa73eb68	Patch
https://git.kernel.org/stable/c/da83ed350e4604b976e94239b08d8e2e7eaee7ea	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::::::::

History

No history.

Information

Published : 2024-04-17 11:15

Updated : 2025-01-27 15:08

NVD link : CVE-2024-26866

Mitre link : CVE-2024-26866

CVE.ORG link : CVE-2024-26866

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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In case of error after the latter call the\nmemory will be explicitly freed in the probe function by\nspi_controller_put() call, but used afterwards by \"devm\" management outside\nprobe() (spi_unregister_controller() <- devm_spi_unregister() below).\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000070\n...\nCall trace:\n kernfs_find_ns\n kernfs_find_and_get_ns\n sysfs_remove_group\n sysfs_remove_groups\n device_remove_attrs\n device_del\n spi_unregister_controller\n devm_spi_unregister\n release_nodes\n devres_release_all\n really_probe\n driver_probe_device\n __device_attach_driver\n bus_for_each_drv\n __device_attach\n device_initial_probe\n bus_probe_device\n deferred_probe_work_func\n process_one_work\n worker_thread\n kthread\n ret_from_fork"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: lpspi: evita el posible use-after-free en probe() fsl_lpspi_probe() est\u00e1 asignando/eliminando memoria manualmente con spi_alloc_host()/spi_alloc_target(), pero usa devm_spi_register_controller() . En caso de error despu\u00e9s de la \u00faltima llamada, la memoria se liberar\u00e1 expl\u00edcitamente en la funci\u00f3n de sonda mediante la llamada a spi_controller_put(), pero la administraci\u00f3n \"devm\" externa a probe() la utilizar\u00e1 despu\u00e9s (spi_unregister_controller() <- devm_spi_unregister() a continuaci\u00f3n). No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000070... Rastreo de llamadas: kernfs_find_ns kernfs_find_and_get_ns sysfs_remove_group sysfs_remove_groups device_remove_attrs device_del spi_unregister_controller devm_spi_unregister release_nodes devres_release _todos realmente_probe driver_probe_device __device_attach_driver bus_for_each_drv __device_attach dispositivo_initial_probe bus_probe_device deferred_probe_work_func proceso_one_work trabajador_hilo kthread ret_from_fork"}], "lastModified": "2025-01-27T15:08:19.563", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A2D8AF06-BD2B-4408-99B0-5EE4CF1A092B", "versionEndExcluding": "6.6.23", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD", "versionEndExcluding": "6.7.11", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1", "versionEndExcluding": "6.8.2", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}