CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47404 – HID: betop: fix slab-out-of-bounds Write in betop_probe
https://notcve.org/view.php?id=CVE-2021-47404
In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betop_probe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate this assumption. So this patch checks hid_device's input is non empty before it's been used. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: HID: betop: corrige escritura slab-out-of-bounds en betop_probe. Syzbot informó un error de escritura slab-out-of-bounds en el controlador hid-betopff. El problema es que el controlador supone que el dispositivo debe tener un informe de entrada, pero algunos dispositivos maliciosos violan esta suposición. Entonces, este parche verifica que la entrada de hid_device no esté vacía antes de usarse. • https://git.kernel.org/stable/c/a4faa7153b87fbcfe4be15f4278676f79ca6e019 https://git.kernel.org/stable/c/6fc4476dda58f6c00097c7ddec3b772513f57525 https://git.kernel.org/stable/c/1c83c38dec83d57bc18d0c01d82c413d3b34ccb9 https://git.kernel.org/stable/c/bb8b72374db69afa25a5b65cf1c092860c6fe914 https://git.kernel.org/stable/c/fe9bb925e7096509711660d39c0493a1546e9550 https://git.kernel.org/stable/c/dedfc35a2de2bae9fa3da8210a05bfd515f83fee https://git.kernel.org/stable/c/708107b80aa616976d1c5fa60ac0c1390749db5e https://git.kernel.org/stable/c/1e4ce418b1cb1a810256b5fb3fd33d22d •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47386 – hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
https://notcve.org/view.php?id=CVE-2021-47386
In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field If driver read val value sufficient for (val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7)) from device then Null pointer dereference occurs. (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers) Also lm75[] does not serve a purpose anymore after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients(). The patch fixes possible NULL pointer dereference by removing lm75[]. Found by Linux Driver Verification project (linuxtesting.org). [groeck: Dropped unnecessary continuation lines, fixed multi-line alignment] En el kernel de Linux, se resolvió la siguiente vulnerabilidad: hwmon: (w83791d) Corrija la desreferencia del puntero NULL eliminando el campo de estructura innecesario. Si el controlador lee el valor val suficiente para (val & 0x08) && (!(val & 0x80)) && (( val & 0x7) == ((val >> 4) & 0x7)) desde el dispositivo, luego se produce la desreferencia del puntero null. (Es posible si tmp = 0b0xyz1xyz, donde los mismos literales significan los mismos números) Además, lm75[] ya no sirve para nada después de cambiar a devm_i2c_new_dummy_device() en w83791d_detect_subclients(). • https://git.kernel.org/stable/c/44d3c480e4e2a75bf6296a18b4356157991ccd80 https://git.kernel.org/stable/c/516d9055039017a20a698103be2b556b4c976bb8 https://git.kernel.org/stable/c/16887ae4e3defd2c4e7913b6c539f33eaf4eac5c https://git.kernel.org/stable/c/943c15ac1b84d378da26bba41c83c67e16499ac4 https://access.redhat.com/security/cve/CVE-2021-47386 https://bugzilla.redhat.com/show_bug.cgi?id=2282354 • CWE-476: NULL Pointer Dereference •
CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47385 – hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field
https://notcve.org/view.php?id=CVE-2021-47385
In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field If driver read val value sufficient for (val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7)) from device then Null pointer dereference occurs. (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers) Also lm75[] does not serve a purpose anymore after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients(). The patch fixes possible NULL pointer dereference by removing lm75[]. Found by Linux Driver Verification project (linuxtesting.org). [groeck: Dropped unnecessary continuation lines, fixed multipline alignment] En el kernel de Linux, se resolvió la siguiente vulnerabilidad: hwmon: (w83792d) Corrija la desreferencia del puntero NULL eliminando el campo de estructura innecesario. Si el controlador lee el valor val suficiente para (val & 0x08) && (!(val & 0x80)) && (( val & 0x7) == ((val >> 4) & 0x7)) desde el dispositivo, luego se produce la desreferencia del puntero null. (Es posible si tmp = 0b0xyz1xyz, donde los mismos literales significan los mismos números) Además, lm75[] ya no sirve para nada después de cambiar a devm_i2c_new_dummy_device() en w83791d_detect_subclients(). • https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1 https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3 https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3 https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278 https://access.redhat.com/security/cve/CVE-2021-47385 https://bugzilla.redhat.com/show_bug.cgi?id=2282355 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47384 – hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field
https://notcve.org/view.php?id=CVE-2021-47384
In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field If driver read tmp value sufficient for (tmp & 0x08) && (!(tmp & 0x80)) && ((tmp & 0x7) == ((tmp >> 4) & 0x7)) from device then Null pointer dereference occurs. (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers) Also lm75[] does not serve a purpose anymore after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients(). The patch fixes possible NULL pointer dereference by removing lm75[]. Found by Linux Driver Verification project (linuxtesting.org). [groeck: Dropped unnecessary continuation lines, fixed multi-line alignments] En el kernel de Linux, se resolvió la siguiente vulnerabilidad: hwmon: (w83793) Corrija la desreferencia del puntero NULL eliminando el campo de estructura innecesario. Si el controlador lee el valor tmp suficiente para (tmp & 0x08) && (!(tmp & 0x80)) && (( tmp & 0x7) == ((tmp >> 4) & 0x7)) desde el dispositivo, luego se produce la desreferencia del puntero null. (Es posible si tmp = 0b0xyz1xyz, donde los mismos literales significan los mismos números) Además, lm75[] ya no sirve para nada después de cambiar a devm_i2c_new_dummy_device() en w83791d_detect_subclients(). • https://git.kernel.org/stable/c/6cb01fe630eaffc5a2c3f7364436caddba286623 https://git.kernel.org/stable/c/7c4fd5de39f273626a2b0f3a446d2cc85cd47616 https://git.kernel.org/stable/c/746011193f44f97f8784edcf8327c587946745fc https://git.kernel.org/stable/c/dd4d747ef05addab887dc8ff0d6ab9860bbcd783 https://access.redhat.com/security/cve/CVE-2021-47384 https://bugzilla.redhat.com/show_bug.cgi?id=2282356 •
CVSS: 6.6EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47383 – tty: Fix out-of-bound vmalloc access in imageblit
https://notcve.org/view.php?id=CVE-2021-47383
In the Linux kernel, the following vulnerability has been resolved: tty: Fix out-of-bound vmalloc access in imageblit This issue happens when a userspace program does an ioctl FBIOPUT_VSCREENINFO passing the fb_var_screeninfo struct containing only the fields xres, yres, and bits_per_pixel with values. If this struct is the same as the previous ioctl, the vc_resize() detects it and doesn't call the resize_screen(), leaving the fb_var_screeninfo incomplete. And this leads to the updatescrollmode() calculates a wrong value to fbcon_display->vrows, which makes the real_y() return a wrong value of y, and that value, eventually, causes the imageblit to access an out-of-bound address value. To solve this issue I made the resize_screen() be called even if the screen does not need any resizing, so it will "fix and fill" the fb_var_screeninfo independently. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: tty: corrige el acceso vmalloc fuera de los límites en imageblit. Este problema ocurre cuando un programa de espacio de usuario realiza un ioctl FBIOPUT_VSCREENINFO pasando la estructura fb_var_screeninfo que contiene solo los campos xres, yres y bits_per_pixel con valores. Si esta estructura es la misma que la ioctl anterior, vc_resize() la detecta y no llama a resize_screen(), dejando fb_var_screeninfo incompleto. • https://git.kernel.org/stable/c/7e71fcedfda6f7de18f850a6b36e78d78b04476f https://git.kernel.org/stable/c/70aed03b1d5a5df974f456cdc8eedb213c94bb8b https://git.kernel.org/stable/c/067c694d06040db6f0c65281bb358452ca6d85b9 https://git.kernel.org/stable/c/8a6a240f52e14356386030d8958ae8b1761d2325 https://git.kernel.org/stable/c/883f7897a25e3ce14a7f274ca4c73f49ac84002a https://git.kernel.org/stable/c/d570c48dd37dbe8fc6875d4461d01a9554ae2560 https://git.kernel.org/stable/c/699d926585daa6ec44be556cdc1ab89e5d54557b https://git.kernel.org/stable/c/3b0c406124719b625b1aba431659f5cdc • CWE-125: Out-of-bounds Read •