CVSS: 4.9EPSS: 0%CPEs: 3EXPL: 0CVE-2020-11608 – kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in drivers/media/usb/gspca/ov519.c
https://notcve.org/view.php?id=CVE-2020-11608
An issue was discovered in the Linux kernel before 5.6.1. drivers/media/usb/gspca/ov519.c allows NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints, aka CID-998912346c0d. Se detectó un problema en el kernel de Linux versiones anteriores a 5.6.1. El archivo drivers/media/usb/gspca/ov519.c, permite desreferencias del puntero NULL en las funciones ov511_mode_init_regs y ov518_mode_init_regs cuando hay cero endpoints, también se conoce como CID-998912346c0d. A flaw was found in the way the ov519 driver in the Linux kernel handled certain types of USB descriptors. This flaw allows an attacker with the ability to induce the error conditions to crash the system. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=998912346c0da53a6dbb71fab3a138586b596b30 https://github.com/torvalds/linux/commit/998912346c0da53a6dbb71fab3a138586b596b30 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-a • CWE-476: NULL Pointer Dereference •
CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0CVE-2020-11565 – kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c
https://notcve.org/view.php?id=CVE-2020-11565
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.” ** EN DISPUTA ** Se detectó un problema en el kernel de Linux versiones hasta 5.6.2. La función mpol_parse_str en el archivo mm/mempolicy.c presenta una escritura fuera de límites en la región stack de la memoria porque una lista de nodos vacía es manejada inapropiadamente durante el análisis de la opción de montaje, también se conoce como CID-aa9f7d5172fa. NOTA: Alguien en la comunidad de seguridad no está de acuerdo en que se trata de una vulnerabilidad porque el problema "es un error en el análisis de las opciones de montaje que sólo puede ser especificado por un usuario privilegiado, por lo que la activación del error no otorga ningún poder que no se tenga ya". An out-of-bounds write flaw was found in the Linux kernel. • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://usn.ubuntu.com/4363-1 https://usn.ubuntu.com/4364-1 https://usn.ubuntu.com/4367-1 https:&# • CWE-787: Out-of-bounds Write •
CVSS: 4.4EPSS: 0%CPEs: 8EXPL: 0CVE-2020-11494
https://notcve.org/view.php?id=CVE-2020-11494
An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4. Se detectó un problema en la función slc_bump en el archivo drivers/net/can/slcan.c en el kernel de Linux versión 3.16 hasta la versión 5.6.2. Permite a atacantes leer datos de can_frame no inicializados, conteniendo potencialmente información confidencial de la memoria de la pila del kernel, si la configuración carece de CONFIG_INIT_STACK_ALL, también se conoce como CID-b9258a2cece4 • http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=08fadc32ce6239dc75fd5e869590e29bc62bbc28 https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debi • CWE-908: Use of Uninitialized Resource CWE-909: Missing Initialization of Resource •
CVSS: 8.8EPSS: 0%CPEs: 52EXPL: 6CVE-2020-8835 – Linux kernel bpf verifier vulnerability
https://notcve.org/view.php?id=CVE-2020-8835
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780) En el kernel de Linux versiones 5.5.0 y más recientes, el verificador bpf (kernel/bpf/verifier.c) no restringió apropiadamente los límites de registro para operaciones de 32 bits, conllevando a lecturas y escrituras fuera de límites en la memoria del kernel. La vulnerabilidad también afecta a la serie estable de Linux versión 5.4, comenzando con la versión v5.4.7, ya que el commit de introducción fue respaldado en esa derivación. • https://github.com/zilong3033/CVE-2020-8835 https://github.com/digamma-ai/CVE-2020-8835-verification https://github.com/SplendidSky/CVE-2020-8835 https://github.com/Prabhashaka/Exploitation-CVE-2020-8835 https://github.com/johnatag/INF8602-CVE-2020-8835 http://www.openwall.com/lists/oss-security/2021/07/20/1 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://git.kernel.org/pub/scm/linux/kernel/git/torvald • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 5.4EPSS: 0%CPEs: 9EXPL: 1CVE-2020-10942 – kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field
https://notcve.org/view.php?id=CVE-2020-10942
In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls. En el kernel de Linux versiones anteriores a 5.5.8, la función get_raw_socket en el archivo drivers/vhost/net.c carece de una comprobación de un campo sk_family, que podría permitir a atacantes desencadenar una corrupción de pila del kernel por medio de llamadas de sistema diseñadas. A stack buffer overflow issue was found in the get_raw_socket() routine of the Host kernel accelerator for virtio net (vhost-net) driver. It could occur while doing an ictol(VHOST_NET_SET_BACKEND) call, and retrieving socket name in a kernel stack variable via get_raw_socket(). A user able to perform ioctl(2) calls on the '/dev/vhost-net' device may use this flaw to crash the kernel resulting in DoS issue. • http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html http://www.openwall.com/lists/oss-security/2020/04/15/4 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.8 https://git.kernel.org/linus/42d84c8490f9f0931786f1623191fcab397c3d64 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://lkml.org/lkm • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •