CVSS: 6.2EPSS: 0%CPEs: 3EXPL: 0CVE-2024-36962 – net: ks8851: Queue RX packets in IRQ handler instead of disabling BHs
https://notcve.org/view.php?id=CVE-2024-36962
In the Linux kernel, the following vulnerability has been resolved: net: ks8851: Queue RX packets in IRQ handler instead of disabling BHs Currently the driver uses local_bh_disable()/local_bh_enable() in its IRQ handler to avoid triggering net_rx_action() softirq on exit from netif_rx(). The net_rx_action() could trigger this driver .start_xmit callback, which is protected by the same lock as the IRQ handler, so calling the .start_xmit from netif_rx() from the IRQ handler critical section protected by the lock could lead to an attempt to claim the already claimed lock, and a hang. The local_bh_disable()/local_bh_enable() approach works only in case the IRQ handler is protected by a spinlock, but does not work if the IRQ handler is protected by mutex, i.e. this works for KS8851 with Parallel bus interface, but not for KS8851 with SPI bus interface. Remove the BH manipulation and instead of calling netif_rx() inside the IRQ handler code protected by the lock, queue all the received SKBs in the IRQ handler into a queue first, and once the IRQ handler exits the critical section protected by the lock, dequeue all the queued SKBs and push them all into netif_rx(). At this point, it is safe to trigger the net_rx_action() softirq, since the netif_rx() call is outside of the lock that protects the IRQ handler. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ks8851: Cola de paquetes RX en el controlador IRQ en lugar de deshabilitar los BH Actualmente, el controlador usa local_bh_disable()/local_bh_enable() en su controlador IRQ para evitar activar el softirq net_rx_action() al salir de netif_rx(). net_rx_action() podría activar esta devolución de llamada del controlador .start_xmit, que está protegido por el mismo candado que el controlador IRQ, por lo que llamar al .start_xmit desde netif_rx() desde la sección crítica del controlador IRQ protegido por el bloqueo podría llevar a un intento de reclamar el candado ya reclamado y un colgado. El enfoque local_bh_disable()/local_bh_enable() funciona sólo en caso de que el controlador IRQ esté protegido por un spinlock, pero no funciona si el controlador IRQ está protegido por mutex, es decir, esto funciona para KS8851 con interfaz de bus paralelo, pero no para KS8851 con Interfaz de bus SPI. • https://git.kernel.org/stable/c/492337a4fbd1421b42df684ee9b34be2a2722540 https://git.kernel.org/stable/c/cba376eb036c2c20077b41d47b317d8218fe754f https://git.kernel.org/stable/c/49d5d70538b6b8f2a3f8f1ac30c1f921d4a0929b https://git.kernel.org/stable/c/8a3ff43dcbab7c96f9e8cf2bd1049ab8d6e59545 https://git.kernel.org/stable/c/ae87f661f3c1a3134a7ed86ab69bf9f12af88993 https://git.kernel.org/stable/c/7e2901a2a9195da76111f351584bf77552a038f0 https://git.kernel.org/stable/c/e0863634bf9f7cf36291ebb5bfa2d16632f79c49 •
CVSS: 7.1EPSS: 0%CPEs: 8EXPL: 0CVE-2024-36960 – drm/vmwgfx: Fix invalid reads in fence signaled events
https://notcve.org/view.php?id=CVE-2024-36960
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix invalid reads in fence signaled events Correctly set the length of the drm_event to the size of the structure that's actually used. The length of the drm_event was set to the parent structure instead of to the drm_vmw_event_fence which is supposed to be read. drm_read uses the length parameter to copy the event to the user space thus resuling in oob reads. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/vmwgfx: corrige lecturas no válidas en eventos señalizados de valla establezca correctamente la longitud de drm_event al tamaño de la estructura que realmente se utiliza. La longitud de drm_event se configuró en la estructura principal en lugar de en drm_vmw_event_fence que se supone debe leerse. drm_read usa el parámetro de longitud para copiar el evento al espacio del usuario, lo que resulta en lecturas oob. This vulnerability allows local attackers to disclose sensitive information on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of vmw fence events. • https://git.kernel.org/stable/c/8b7de6aa84682a3396544fd88cd457f95484573a https://git.kernel.org/stable/c/2f527e3efd37c7c5e85e8aa86308856b619fa59f https://git.kernel.org/stable/c/cef0962f2d3e5fd0660c8efb72321083a1b531a9 https://git.kernel.org/stable/c/3cd682357c6167f636aec8ac0efaa8ba61144d36 https://git.kernel.org/stable/c/b7bab33c4623c66e3398d5253870d4e88c52dfc0 https://git.kernel.org/stable/c/0dbfc73670b357456196130551e586345ca48e1b https://git.kernel.org/stable/c/7b5fd3af4a250dd0a2a558e07b43478748eb5d22 https://git.kernel.org/stable/c/deab66596dfad14f1c54eeefdb7242834 • CWE-125: Out-of-bounds Read •
CVSS: -EPSS: 0%CPEs: 11EXPL: 0CVE-2024-36959 – pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map()
https://notcve.org/view.php?id=CVE-2024-36959
In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map() If we fail to allocate propname buffer, we need to drop the reference count we just took. Because the pinctrl_dt_free_maps() includes the droping operation, here we call it directly. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: pinctrl: devicetree: corrige la fuga de recuento de referencia en pinctrl_dt_to_map() Si no asignamos el búfer de nombre de propiedad, debemos eliminar el recuento de referencias que acabamos de tomar. Debido a que pinctrl_dt_free_maps() incluye la operación de eliminación, aquí la llamamos directamente. • https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9 https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9 https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471 https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce https://git.kernel.org/stable/c/aaf552c5d53abe4659176e099575fe870d2e4768 https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0a •
CVSS: 4.4EPSS: 0%CPEs: 7EXPL: 0CVE-2024-36957 – octeontx2-af: avoid off-by-one read from userspace
https://notcve.org/view.php?id=CVE-2024-36957
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: avoid off-by-one read from userspace We try to access count + 1 byte from userspace with memdup_user(buffer, count + 1). However, the userspace only provides buffer of count bytes and only these count bytes are verified to be okay to access. To ensure the copied buffer is NUL terminated, we use memdup_user_nul instead. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: octeontx2-af: evitar lecturas uno por uno desde el espacio de usuario Intentamos acceder al recuento + 1 byte desde el espacio de usuario con memdup_user (búfer, recuento + 1). Sin embargo, el espacio de usuario solo proporciona un búfer de bytes de recuento y solo se verifica que se puede acceder a estos bytes de recuento. • https://git.kernel.org/stable/c/dae49384d0d7695540e2d75168f323cef1384810 https://git.kernel.org/stable/c/3a2eb515d1367c0f667b76089a6e727279c688b8 https://git.kernel.org/stable/c/c9a2ed3fdd037314a71e6a6ba5d99a3605f6f9c7 https://git.kernel.org/stable/c/bcdac70adceb44373da204c3c297f2a98e13216e https://git.kernel.org/stable/c/ec697fbd38cbe2eef0948b58673b146caa95402f https://git.kernel.org/stable/c/8f11fe3ea3fc261640cfc8a5addd838000407c67 https://git.kernel.org/stable/c/0a0285cee11c7dcc2657bcd456e469958a5009e7 https://git.kernel.org/stable/c/fc3e0076c1f82fe981d321e3a7bad4cbe • CWE-193: Off-by-one Error •
CVSS: 7.7EPSS: 0%CPEs: 5EXPL: 0CVE-2024-36955 – ALSA: hda: intel-sdw-acpi: fix usage of device_get_named_child_node()
https://notcve.org/view.php?id=CVE-2024-36955
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: intel-sdw-acpi: fix usage of device_get_named_child_node() The documentation for device_get_named_child_node() mentions this important point: " The caller is responsible for calling fwnode_handle_put() on the returned fwnode pointer. " Add fwnode_handle_put() to avoid a leaked reference. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: hda: intel-sdw-acpi: corrige el uso de device_get_named_child_node() La documentación para device_get_named_child_node() menciona este punto importante: "La persona que llama es responsable de llamar a fwnode_handle_put() en el puntero fwnode devuelto. "Agregue fwnode_handle_put() para evitar una referencia filtrada. • https://git.kernel.org/stable/c/08c2a4bc9f2acaefbd0158866db5cb3238a68674 https://git.kernel.org/stable/c/bd2d9641a39e6b5244230c4b41c4aca83b54b377 https://git.kernel.org/stable/c/722d33c442e66e4aabd3e778958d696ff3a2777e https://git.kernel.org/stable/c/7db626d2730d3d80fd31638169054b1e507f07bf https://git.kernel.org/stable/c/7ef6ecf98ce309b1f4e5a25cddd5965d01feea07 https://git.kernel.org/stable/c/c158cf914713efc3bcdc25680c7156c48c12ef6a • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •