CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-50141 – ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context
https://notcve.org/view.php?id=CVE-2024-50141
In the Linux kernel, the following vulnerability has been resolved: ACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context PRMT needs to find the correct type of block to translate the PA-VA mapping for EFI runtime services. The issue arises because the PRMT is finding a block of type EFI_CONVENTIONAL_MEMORY, which is not appropriate for runtime services as described in Section 2.2.2 (Runtime Services) of the UEFI Specification [1]. Since the PRM handler is a type of runtime service, this causes an exception when the PRM handler is called. [Firmware Bug]: Unable to handle paging request in EFI runtime service WARNING: CPU: 22 PID: 4330 at drivers/firmware/efi/runtime-wrappers.c:341 __efi_queue_work+0x11c/0x170 Call trace: Let PRMT find a block with EFI_MEMORY_RUNTIME for PRM handler and PRM context. If no suitable block is found, a warning message will be printed, but the procedure continues to manage the next PRM handler. However, if the PRM handler is actually called without proper allocation, it would result in a failure during error handling. By using the correct memory types for runtime services, ensure that the PRM handler and the context are properly mapped in the virtual address space during runtime, preventing the paging request error. The issue is really that only memory that has been remapped for runtime by the firmware can be used by the PRM handler, and so the region needs to have the EFI_MEMORY_RUNTIME attribute. [ rjw: Subject and changelog edits ] En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: PRM: Buscar bloque EFI_MEMORY_RUNTIME para el controlador PRM y el contexto PRMT necesita encontrar el tipo correcto de bloque para traducir la asignación PA-VA para los servicios de tiempo de ejecución EFI. El problema surge porque PRMT encuentra un bloque de tipo EFI_CONVENTIONAL_MEMORY, que no es apropiado para los servicios de tiempo de ejecución como se describe en la Sección 2.2.2 (Servicios de tiempo de ejecución) de la Especificación UEFI [1]. Dado que el controlador PRM es un tipo de servicio de tiempo de ejecución, esto provoca una excepción cuando se llama al controlador PRM. [Error de firmware]: No se puede manejar la solicitud de paginación en el servicio de tiempo de ejecución de EFI ADVERTENCIA: CPU: 22 PID: 4330 en drivers/firmware/efi/runtime-wrappers.c:341 __efi_queue_work+0x11c/0x170 Rastreo de llamadas: deje que PRMT encuentre un bloque con EFI_MEMORY_RUNTIME para el controlador PRM y el contexto PRM. • https://git.kernel.org/stable/c/cefc7ca46235f01d5233e3abd4b79452af01d9e9 https://git.kernel.org/stable/c/8df52929530839e878e6912e33348b54101e3250 https://git.kernel.org/stable/c/8ce081ad842510f0e70fa6065a401660eac876d4 https://git.kernel.org/stable/c/795b080d9aa127215a5baf088a22fa09341a0126 https://git.kernel.org/stable/c/20e9fafb8bb6f545667d7916b0e81e68c0748810 https://git.kernel.org/stable/c/088984c8d54c0053fc4ae606981291d741c5924b •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-50138 – bpf: Use raw_spinlock_t in ringbuf
https://notcve.org/view.php?id=CVE-2024-50138
In the Linux kernel, the following vulnerability has been resolved: bpf: Use raw_spinlock_t in ringbuf The function __bpf_ringbuf_reserve is invoked from a tracepoint, which disables preemption. Using spinlock_t in this context can lead to a "sleep in atomic" warning in the RT variant. This issue is illustrated in the example below: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs preempt_count: 1, expected: 0 RCU nest depth: 1, expected: 1 INFO: lockdep is turned off. Preemption disabled at: [<ffffd33a5c88ea44>] migrate_enable+0xc0/0x39c CPU: 7 PID: 556208 Comm: test_progs Tainted: G Hardware name: Qualcomm SA8775P Ride (DT) Call trace: dump_backtrace+0xac/0x130 show_stack+0x1c/0x30 dump_stack_lvl+0xac/0xe8 dump_stack+0x18/0x30 __might_resched+0x3bc/0x4fc rt_spin_lock+0x8c/0x1a4 __bpf_ringbuf_reserve+0xc4/0x254 bpf_ringbuf_reserve_dynptr+0x5c/0xdc bpf_prog_ac3d15160d62622a_test_read_write+0x104/0x238 trace_call_bpf+0x238/0x774 perf_call_bpf_enter.isra.0+0x104/0x194 perf_syscall_enter+0x2f8/0x510 trace_sys_enter+0x39c/0x564 syscall_trace_enter+0x220/0x3c0 do_el0_svc+0x138/0x1dc el0_svc+0x54/0x130 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180 Switch the spinlock to raw_spinlock_t to avoid this error. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: uso de raw_spinlock_t en ringbuf La función __bpf_ringbuf_reserve se invoca desde un punto de seguimiento, lo que desactiva la preempción. El uso de spinlock_t en este contexto puede provocar una advertencia de "suspensión en atómico" en la variante RT. • https://git.kernel.org/stable/c/457f44363a8894135c85b7a9afd2bd8196db24ab https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3 https://git.kernel.org/stable/c/ca30e682e5d6de44d12c4610767811c9a21d59ba https://git.kernel.org/stable/c/8b62645b09f870d70c7910e7550289d444239a46 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-50135 – nvme-pci: fix race condition between reset and nvme_dev_disable()
https://notcve.org/view.php?id=CVE-2024-50135
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix race condition between reset and nvme_dev_disable() nvme_dev_disable() modifies the dev->online_queues field, therefore nvme_pci_update_nr_queues() should avoid racing against it, otherwise we could end up passing invalid values to blk_mq_update_nr_hw_queues(). WARNING: CPU: 39 PID: 61303 at drivers/pci/msi/api.c:347 pci_irq_get_affinity+0x187/0x210 Workqueue: nvme-reset-wq nvme_reset_work [nvme] RIP: 0010:pci_irq_get_affinity+0x187/0x210 Call Trace: <TASK> ? blk_mq_pci_map_queues+0x87/0x3c0 ? pci_irq_get_affinity+0x187/0x210 blk_mq_pci_map_queues+0x87/0x3c0 nvme_pci_map_queues+0x189/0x460 [nvme] blk_mq_update_nr_hw_queues+0x2a/0x40 nvme_reset_work+0x1be/0x2a0 [nvme] Fix the bug by locking the shutdown_lock mutex before using dev->online_queues. Give up if nvme_dev_disable() is running or if it has been executed already. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvme-pci: corrige la condición de ejecución entre reset y nvme_dev_disable() nvme_dev_disable() modifica el campo dev->online_queues, por lo tanto, nvme_pci_update_nr_queues() debería evitar competir contra él, de lo contrario podríamos terminar pasando valores no válidos a blk_mq_update_nr_hw_queues(). • https://git.kernel.org/stable/c/949928c1c731417cc0f070912c63878b62b544f4 https://git.kernel.org/stable/c/4ed32cc0939b64e3d7b48c8c0d63ea038775f304 https://git.kernel.org/stable/c/b33e49a5f254474b33ce98fd45dd0ffdc247a0be https://git.kernel.org/stable/c/26bc0a81f64ce00fc4342c38eeb2eddaad084dd2 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-50134 – drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA
https://notcve.org/view.php?id=CVE-2024-50134
In the Linux kernel, the following vulnerability has been resolved: drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA Replace the fake VLA at end of the vbva_mouse_pointer_shape shape with a real VLA to fix a "memcpy: detected field-spanning write error" warning: [ 13.319813] memcpy: detected field-spanning write (size 16896) of single field "p->data" at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 (size 4) [ 13.319841] WARNING: CPU: 0 PID: 1105 at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 hgsmi_update_pointer_shape+0x192/0x1c0 [vboxvideo] [ 13.320038] Call Trace: [ 13.320173] hgsmi_update_pointer_shape [vboxvideo] [ 13.320184] vbox_cursor_atomic_update [vboxvideo] Note as mentioned in the added comment it seems the original length calculation for the allocated and send hgsmi buffer is 4 bytes too large. Changing this is not the goal of this patch, so this behavior is kept. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/vboxvideo: Reemplazar VLA falso al final de vbva_mouse_pointer_shape con VLA real Reemplace el VLA falso al final de la forma vbva_mouse_pointer_shape con un VLA real para corregir una advertencia "memcpy: error de escritura que abarca el campo detectado": [ 13.319813] memcpy: se detectó una escritura que abarca el campo (tamaño 16896) de un solo campo "p->data" en drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 (tamaño 4) [ 13.319841] ADVERTENCIA: CPU: 0 PID: 1105 en drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 hgsmi_update_pointer_shape+0x192/0x1c0 [vboxvideo] [ [13.320038] Seguimiento de llamadas: [13.320173] hgsmi_update_pointer_shape [vboxvideo] [13.320184] vbox_cursor_atomic_update [vboxvideo] Tenga en cuenta que, como se menciona en el comentario agregado, parece que el cálculo de longitud original para el búfer hgsmi asignado y enviado es 4 bytes más grande. Cambiar esto no es el objetivo de este parche, por lo que se mantiene este comportamiento. • https://git.kernel.org/stable/c/02c86c5d5ef4bbba17d38859c74872825f536617 https://git.kernel.org/stable/c/75f828e944dacaac8870418461d3d48a1ecf2331 https://git.kernel.org/stable/c/34a422274b693507025a7db21519865d1862afcb https://git.kernel.org/stable/c/7458a6cdaebb3dc59af8578ee354fae78a154c4a https://git.kernel.org/stable/c/9eb32bd23bbcec44bcbef27b7f282b7a7f3d0391 https://git.kernel.org/stable/c/fae9dc12c61ce23cf29d09824a741b7b1ff8f01f https://git.kernel.org/stable/c/d92b90f9a54d9300a6e883258e79f36dab53bfae •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-50131 – tracing: Consider the NULL character when validating the event length
https://notcve.org/view.php?id=CVE-2024-50131
In the Linux kernel, the following vulnerability has been resolved: tracing: Consider the NULL character when validating the event length strlen() returns a string length excluding the null byte. If the string length equals to the maximum buffer length, the buffer will have no space for the NULL terminating character. This commit checks this condition and returns failure for it. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo: considerar el carácter NULL al validar la longitud del evento strlen() devuelve una longitud de cadena que excluye el byte nulo. Si la longitud de la cadena es igual a la longitud máxima del búfer, el búfer no tendrá espacio para el carácter de terminación NULL. Esta confirmación verifica esta condición y devuelve un error. • https://git.kernel.org/stable/c/dec65d79fd269d05427c8167090bfc9c3d0b56c4 https://git.kernel.org/stable/c/5e3231b352725ff4a3a0095e6035af674f2d8725 https://git.kernel.org/stable/c/02874ca52df2ca2423ba6122039315ed61c25972 https://git.kernel.org/stable/c/b86b0d6eea204116e4185acc35041ca4ff11a642 https://git.kernel.org/stable/c/f4ed40d1c669bba1a54407d8182acdc405683f29 https://git.kernel.org/stable/c/a14a075a14af8d622c576145455702591bdde09d https://git.kernel.org/stable/c/5fd942598ddeed9a212d1ff41f9f5b47bcc990a7 https://git.kernel.org/stable/c/0b6e2e22cb23105fcb171ab92f0f7516c •