CVSS: 7.8EPSS: 1%CPEs: 20EXPL: 6CVE-2021-33909 – kernel: size_t-to-int conversion vulnerability in the filesystem layer
https://notcve.org/view.php?id=CVE-2021-33909
20 Jul 2021 — fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. Un archivo fs/seq_file.c en el kernel de Linux versiones 3.16 hasta 5.13.x anteriores a 5.13.4, no restringe apropiadamente las asignaciones de búferes seq, conllevando a un desbordamiento de enteros, una escritura fuera de límites y una escalada a root por parte de ... • https://github.com/Liang2580/CVE-2021-33909 • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 27EXPL: 0CVE-2021-3612 – kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP()
https://notcve.org/view.php?id=CVE-2021-3612
09 Jul 2021 — An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se ha encontrado un fallo de escritura en memoria fuera de límites en el kernel de Linux joystick devices subsystem en versiones ant... • https://bugzilla.redhat.com/show_bug.cgi?id=1974079 • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 8.3EPSS: 0%CPEs: 26EXPL: 16CVE-2021-22555 – Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE
https://notcve.org/view.php?id=CVE-2021-22555
07 Jul 2021 — A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space En el archivo net/netfilter/x_tables.c se ha detectado una escritura fuera de límites en la pila que afecta a Linux desde la versión 2.6.19-rc1. Esto permite a un atacante alcanzar privilegios o causar una denegación de servicio (por medio de corrupción de la memoria de la pila) mediante el espa... • https://www.exploit-db.com/exploits/50135 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2021-35039
https://notcve.org/view.php?id=CVE-2021-35039
07 Jul 2021 — kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument. El archivo kernel/module.c en el kernel de Linux versiones anteriores a 5.12.14, maneja inapropiadamente la Verificación de firmas, también se conoce como CID-0c18f29aae7c. Sin CONFIG_MODULE_SIG, la verificación de que un módulo del ... • http://www.openwall.com/lists/oss-security/2021/07/06/3 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.8EPSS: 0%CPEs: 18EXPL: 0CVE-2021-28691
https://notcve.org/view.php?id=CVE-2021-28691
29 Jun 2021 — Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale poi... • https://security.gentoo.org/glsa/202107-30 • CWE-416: Use After Free •
CVSS: 5.9EPSS: 0%CPEs: 18EXPL: 1CVE-2020-28097
https://notcve.org/view.php?id=CVE-2020-28097
24 Jun 2021 — The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85. El subsistema vgacon en el kernel de Linux versiones anteriores a 5.8.10, maneja inapropiadamente el desplazamiento de software. Se presenta una lectura fuera de límites en la función vgacon_scrolldelta, también se conoce como CID-973c096f6a85 • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10 • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 0%CPEs: 15EXPL: 0CVE-2021-3600 – kernel: eBPF 32-bit source register truncation on div/mod
https://notcve.org/view.php?id=CVE-2021-3600
23 Jun 2021 — It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code. Se descubrió que la implementación de eBPF en el kernel de Linux no rastreaba adecuadamente la información de límites para registros de 32 bits al realizar operaciones div y mod. Un atacante local podría usar esto para posiblemente ejecutar código arbitrario. A flaw was fou... • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3600 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 4.7EPSS: 0%CPEs: 2EXPL: 2CVE-2021-33624
https://notcve.org/view.php?id=CVE-2021-33624
23 Jun 2021 — In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db. En el archivo kernel/bpf/verifier.c en el kernel de Linux versiones anteriores a 5.12.13, una rama puede ser mal predicha (por ejemplo, debido a la confusión de tipos) y, en consecuencia, un programa BPF no privilegiado puede leer ubicaciones de memoria arbi... • https://github.com/benschlueter/CVE-2021-33624 • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •
CVSS: 7.0EPSS: 0%CPEs: 68EXPL: 1CVE-2021-3609 – kernel: race condition in net/can/bcm.c leads to local privilege escalation
https://notcve.org/view.php?id=CVE-2021-3609
23 Jun 2021 — .A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root. Se ha encontrado un fallo en el protocolo de red CAN BCM en el kernel de Linux, donde un atacante local puede abusar de un fallo en el subsistema CAN para corromper la memoria, bloquear el sistema o escalar privil... • https://bugzilla.redhat.com/show_bug.cgi?id=1971651 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 1CVE-2021-32078
https://notcve.org/view.php?id=CVE-2021-32078
17 Jun 2021 — An Out-of-Bounds Read was discovered in arch/arm/mach-footbridge/personal-pci.c in the Linux kernel through 5.12.11 because of the lack of a check for a value that shouldn't be negative, e.g., access to element -2 of an array, aka CID-298a58e165e4. Se ha detectado una lectura fuera de límites en el archivo arch/arm/mach-footbridge/personal-pci.c en el kernel de Linux versiones hasta 5.12.11, debido a una falta de comprobación de un valor que no debería ser negativo, por ejemplo, el acceso al elemento -2 de ... • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=298a58e165e447ccfaae35fe9f651f9d7e15166f • CWE-125: Out-of-bounds Read •