CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47480 – scsi: core: Put LLD module refcnt after SCSI device is released
https://notcve.org/view.php?id=CVE-2021-47480
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Put LLD module refcnt after SCSI device is released SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler. Make sure to put LLD module refcnt after SCSI device is released. Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: core: colocar el módulo LLD refcnt después de liberar el dispositivo SCSI. La liberación del host SCSI se activa cuando se libera el dispositivo SCSI. Tenemos que asegurarnos de que el módulo del controlador de dispositivo de bajo nivel no se descargue antes de que se lance la instancia del host SCSI porque se requiere shost->hostt en el controlador de lanzamiento. • https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0 https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836 https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2021-47479 – staging: rtl8712: fix use-after-free in rtl8712_dl_fw
https://notcve.org/view.php?id=CVE-2021-47479
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix use-after-free in rtl8712_dl_fw Syzbot reported use-after-free in rtl8712_dl_fw(). The problem was in race condition between r871xu_dev_remove() ->ndo_open() callback. It's easy to see from crash log, that driver accesses released firmware in ->ndo_open() callback. It may happen, since driver was releasing firmware _before_ unregistering netdev. Fix it by moving unregister_netdev() before cleaning up resources. Call Trace: ... rtl871x_open_fw drivers/staging/rtl8712/hal_init.c:83 [inline] rtl8712_dl_fw+0xd95/0xe10 drivers/staging/rtl8712/hal_init.c:170 rtl8712_hal_init drivers/staging/rtl8712/hal_init.c:330 [inline] rtl871x_hal_init+0xae/0x180 drivers/staging/rtl8712/hal_init.c:394 netdev_open+0xe6/0x6c0 drivers/staging/rtl8712/os_intfs.c:380 __dev_open+0x2bc/0x4d0 net/core/dev.c:1484 Freed by task 1306: ... release_firmware+0x1b/0x30 drivers/base/firmware_loader/main.c:1053 r871xu_dev_remove+0xcc/0x2c0 drivers/staging/rtl8712/usb_intf.c:599 usb_unbind_interface+0x1d8/0x8d0 drivers/usb/core/driver.c:458 En el kernel de Linux, se resolvió la siguiente vulnerabilidad: staging: rtl8712: corrige el use-after-free en rtl8712_dl_fw Syzbot informó el use-after-free en rtl8712_dl_fw(). El problema estaba en la condición de ejecución entre la devolución de llamada r871xu_dev_remove() ->ndo_open(). • https://git.kernel.org/stable/c/8c213fa59199f9673d66970d6940fa093186642f https://git.kernel.org/stable/c/bc5d453eab4506cb52397db8830d1070904265a4 https://git.kernel.org/stable/c/c430094541a80575259a94ff879063ef01473506 https://git.kernel.org/stable/c/befd23bd3b17f1a3f9c943a8580b47444c7c63ed https://git.kernel.org/stable/c/a65c9afe9f2f55b7a7fb4a25ab654cd4139683a4 https://git.kernel.org/stable/c/c052cc1a069c3e575619cf64ec427eb41176ca70 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47478 – isofs: Fix out of bound access for corrupted isofs image
https://notcve.org/view.php?id=CVE-2021-47478
In the Linux kernel, the following vulnerability has been resolved: isofs: Fix out of bound access for corrupted isofs image When isofs image is suitably corrupted isofs_read_inode() can read data beyond the end of buffer. Sanity-check the directory entry length before using it. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: isofs: corrige el acceso fuera de los límites para una imagen isofs corrupta. Cuando la imagen isofs está adecuadamente dañada, isofs_read_inode() puede leer datos más allá del final del búfer. Cordura: verifique la longitud de la entrada del directorio antes de usarla. • https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1 https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5 https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7 https://git.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945 https://git.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30c •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47477 – comedi: dt9812: fix DMA buffers on stack
https://notcve.org/view.php?id=CVE-2021-47477
In the Linux kernel, the following vulnerability has been resolved: comedi: dt9812: fix DMA buffers on stack USB transfer buffers are typically mapped for DMA and must not be allocated on the stack or transfers will fail. Allocate proper transfer buffers in the various command helpers and return an error on short transfers instead of acting on random stack data. Note that this also fixes a stack info leak on systems where DMA is not used as 32 bytes are always sent to the device regardless of how short the command is. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: comedi: dt9812: corrige los búferes DMA en la pila Los búferes de transferencia USB generalmente están asignados para DMA y no deben asignarse en la pila o las transferencias fallarán. Asigne búferes de transferencia adecuados en los distintos asistentes de comando y devuelva un error en transferencias cortas en lugar de actuar sobre datos de pila aleatorios. Tenga en cuenta que esto también soluciona una fuga de información de la pila en sistemas donde no se usa DMA, ya que siempre se envían 32 bytes al dispositivo, independientemente de cuán corto sea el comando. • https://git.kernel.org/stable/c/63274cd7d38a3322d90b66a5bc976de1fb899051 https://git.kernel.org/stable/c/a6af69768d5cb4b2528946d53be5fa19ade37723 https://git.kernel.org/stable/c/365a346cda82f51d835c49136a00a9df8a78c7f2 https://git.kernel.org/stable/c/8a52bc480992c7c9da3ebfea456af731f50a4b97 https://git.kernel.org/stable/c/39ea61037ae78f14fa121228dd962ea3280eacf3 https://git.kernel.org/stable/c/3efb7af8ac437085b6c776e5b54830b149d86efe https://git.kernel.org/stable/c/786f5b03450454557ff858a8bead5d7c0cbf78d6 https://git.kernel.org/stable/c/3ac273d154d634e2034508a14db82a95d •
CVSS: 4.6EPSS: 0%CPEs: 9EXPL: 0CVE-2021-47476 – comedi: ni_usb6501: fix NULL-deref in command paths
https://notcve.org/view.php?id=CVE-2021-47476
In the Linux kernel, the following vulnerability has been resolved: comedi: ni_usb6501: fix NULL-deref in command paths The driver uses endpoint-sized USB transfer buffers but had no sanity checks on the sizes. This can lead to zero-size-pointer dereferences or overflowed transfer buffers in ni6501_port_command() and ni6501_counter_command() if a (malicious) device has smaller max-packet sizes than expected (or when doing descriptor fuzz testing). Add the missing sanity checks to probe(). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: comedi: ni_usb6501: corrige NULL-deref en las rutas de comando El controlador usa búferes de transferencia USB del tamaño de un terminal, pero no tuvo controles de cordura en los tamaños. Esto puede provocar desreferencias de puntero de tamaño cero o búferes de transferencia desbordados en ni6501_port_command() y ni6501_counter_command() si un dispositivo (malicioso) tiene tamaños máximos de paquetes más pequeños de lo esperado (o cuando se realizan pruebas de descriptor difuso). Agregue las comprobaciones de cordura que faltan a probe(). • https://git.kernel.org/stable/c/a03bb00e50ab4c07107da58a52a0bff7943f360c https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224 https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816 https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632 https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1 https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3 https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1 https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004c • CWE-476: NULL Pointer Dereference •