CVE-2024-36969

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix division by zero in setup_dsc_config When slice_height is 0, the division by slice_height in the calculation of the number of slices will cause a division by zero driver crash. This leaves the kernel in a state that requires a reboot. This patch adds a check to avoid the division by zero. The stack trace below is for the 6.8.4 Kernel. I reproduced the issue on a Z16 Gen 2 Lenovo Thinkpad with a Apple Studio Display monitor connected via Thunderbolt. The amdgpu driver crashed with this exception when I rebooted the system with the monitor connected. kernel: ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) kernel: ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? exc_divide_error (arch/x86/kernel/traps.c:194 (discriminator 2)) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: ? asm_exc_divide_error (./arch/x86/include/asm/idtentry.h:548) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu kernel: dc_dsc_compute_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1109) amdgpu After applying this patch, the driver no longer crashes when the monitor is connected and the system is rebooted. I believe this is the same issue reported for 3113.

CVSS v3 5.5 MEDIUM

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/130afc8a886183a94cf6eab7d24f300014ff87ba	Patch
https://git.kernel.org/stable/c/308de6be0c9c7ba36915c0d398e771725c0ea911	Patch
https://git.kernel.org/stable/c/7e4f50dfc98c49b3dc6875a35c3112522fb25639	Patch
https://git.kernel.org/stable/c/91402e0e5de9124a3108db7a14163fcf9a6d322f	Patch
https://git.kernel.org/stable/c/a32c8f951c8a456c1c251e1dcdf21787f8066445	Patch
https://git.kernel.org/stable/c/f187fcbbb8f8bf10c6687f0beae22509369f7563	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::::::::

History

No history.

Information

Published : 2024-06-08 13:15

Updated : 2024-07-17 16:50

NVD link : CVE-2024-36969

Mitre link : CVE-2024-36969

CVE.ORG link : CVE-2024-36969

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-369

Divide By Zero

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This\nleaves the kernel in a state that requires a reboot. This patch adds a\ncheck to avoid the division by zero.\n\nThe stack trace below is for the 6.8.4 Kernel. I reproduced the issue on\na Z16 Gen 2 Lenovo Thinkpad with a Apple Studio Display monitor\nconnected via Thunderbolt. The amdgpu driver crashed with this exception\nwhen I rebooted the system with the monitor connected.\n\nkernel: ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)\nkernel: ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154)\nkernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu\nkernel: ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175)\nkernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu\nkernel: ? exc_divide_error (arch/x86/kernel/traps.c:194 (discriminator 2))\nkernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu\nkernel: ? asm_exc_divide_error (./arch/x86/include/asm/idtentry.h:548)\nkernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) amdgpu\nkernel: dc_dsc_compute_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1109) amdgpu\n\nAfter applying this patch, the driver no longer crashes when the monitor\nis connected and the system is rebooted. I believe this is the same\nissue reported for 3113."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: corrige la divisi\u00f3n por cero en setup_dsc_config Cuando slice_height es 0, la divisi\u00f3n por slice_height en el c\u00e1lculo del n\u00famero de sectores provocar\u00e1 un bloqueo del controlador de divisi\u00f3n por cero. Esto deja el kernel en un estado que requiere un reinicio. Este parche a\u00f1ade un check para evitar la divisi\u00f3n por cero. El seguimiento de la pila a continuaci\u00f3n es para el kernel 6.8.4. Reproduje el problema en un Thinkpad Lenovo Z16 Gen 2 con un monitor Apple Studio Display conectado a trav\u00e9s de Thunderbolt. El controlador amdgpu fall\u00f3 con esta excepci\u00f3n cuando reinici\u00e9 el sistema con el monitor conectado. kernel: ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) kernel:? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) kernel: ? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) n\u00facleo amdgpu:? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) kernel:? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) n\u00facleo amdgpu:? exc_divide_error (arch/x86/kernel/traps.c:194 (discriminador 2)) kernel:? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) n\u00facleo amdgpu:? asm_exc_divide_error (./arch/x86/include/asm/idtentry.h:548) n\u00facleo:? setup_dsc_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc/dc_dsc.c:1053) kernel amdgpu: dc_dsc_compute_config (drivers/gpu/drm/amd/amdgpu/../display/dc/dsc /dc_dsc.c:1109) amdgpu Despu\u00e9s de aplicar este parche, el controlador ya no falla cuando se conecta el monitor y se reinicia el sistema. Creo que este es el mismo problema informado para 3113."}], "lastModified": "2024-07-17T16:50:29.427", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A357705C-6EC2-43FB-8A62-037B6F823106", "versionEndExcluding": "5.15.160"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4E8DFDEB-F911-42FB-A55F-B84A9C556F01", "versionEndExcluding": "6.1.92", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18199311-EF79-4480-85B0-6AD00C70A7BE", "versionEndExcluding": "6.6.32", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3B75CBAF-FD3C-40AE-85BB-0525E142C4C8", "versionEndExcluding": "6.8.11", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "197A592B-2A2B-4A2F-8856-22638007413E", "versionEndExcluding": "6.9.2", "versionStartIncluding": "6.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}

5.5 /10