CVSS: 4.4EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20177
https://notcve.org/view.php?id=CVE-2021-20177
A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected. Se encontró un fallo en la implementación del kernel de Linux de la coincidencia de cadenas dentro de un paquete. Un usuario privilegiado (con root o función CAP_NET_ADMIN) cuando se insertan las reglas de iptables podría insertar una regla que puede causar pánico en el sistema. • https://bugzilla.redhat.com/show_bug.cgi?id=1914719 • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 0%CPEs: 28EXPL: 2CVE-2020-27815
https://notcve.org/view.php?id=CVE-2020-27815
A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo en el código del sistema de archivos JFS en el Kernel de Linux que permite que un atacante local con la capacidad de establecer atributos extendidos para poner en pánico al sistema, causando corrupción de memoria o una escalada de privilegios. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema • http://www.openwall.com/lists/oss-security/2020/11/30/5 http://www.openwall.com/lists/oss-security/2020/12/28/1 https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.netapp.com/advisory/ntap-20210702-0004 https: • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20194 – kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt()
https://notcve.org/view.php?id=CVE-2021-20194
There is a vulnerability in the linux kernel versions higher than 5.2 (if kernel compiled with config params CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY not set, and BPF hook to getsockopt is registered). As result of BPF execution, the local user can trigger bug in __cgroup_bpf_run_filter_getsockopt() function that can lead to heap overflow (because of non-hardened usercopy). The impact of attack could be deny of service or possibly privileges escalation. Se presenta una vulnerabilidad en el kernel de Linux versiones superiores a 5.2 (si el kernel compilado con los parámetros config CONFIG_BPF_SYSCALL=y , CONFIG_BPF=y , CONFIG_CGROUPS=y , CONFIG_CGROUP_BPF=y , CONFIG_HARDENED_USERCOPY no se establece y el hook BPF a getsockopt está registrado). Como resultado de la ejecución de BPF, el usuario local puede desencadenar un error en la función __cgroup_bpf_run_filter_getsockopt() que puede conllevar a un desbordamiento de la pila (debido a una copia de usuario no reforzada). • https://bugzilla.redhat.com/show_bug.cgi?id=1912683 https://security.netapp.com/advisory/ntap-20210326-0003 https://access.redhat.com/security/cve/CVE-2021-20194 • CWE-20: Improper Input Validation CWE-400: Uncontrolled Resource Consumption CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-26934
https://notcve.org/view.php?id=CVE-2021-26934
An issue was discovered in the Linux kernel 4.18 through 5.10.16, as used by Xen. The backend allocation (aka be-alloc) mode of the drm_xen_front drivers was not meant to be a supported configuration, but this wasn't stated accordingly in its support status entry. Se detectó un problema en el kernel de Linux versiones 4.18 hasta 5.10.16, como es usado por Xen. El modo de asignación del backend de los controladores drm_xen_front no estaba destinado a ser una configuración soportada, pero esto no fue declarado por consiguiente en su entrada de estado de soporte • http://xenbits.xen.org/xsa/advisory-363.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GELN5E6MDR5KQBJF5M5COUUED3YFZTD https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EOAJBVAVR6RSCUCHNXPVSNRPSFM7INMP https://security.netapp.com/advisory/ntap-20210326-0001 •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-12364 – kernel: Null pointer dereference in some Intel(R) Graphics Drivers
https://notcve.org/view.php?id=CVE-2020-12364
Null pointer reference in some Intel(R) Graphics Drivers for Windows* before version 26.20.100.7212 and before version Linux kernel version 5.5 may allow a privileged user to potentially enable a denial of service via local access. Una referencia de puntero null en algunos Intel® Graphics Drivers para Windows* versiones anteriores a 26.20.100.7212 y la versión 5.5 del kernel de Linux, puede permitir a un usuario privilegiado habilitar potencialmente una denegación de servicio por medio de un acceso local Null pointer reference in some Intel(R) Graphics Drivers for Microsoft Windows and the Linux kernel may allow a privileged user to potentially enable a denial of service via local access. • https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00438.html https://access.redhat.com/security/cve/CVE-2020-12364 https://bugzilla.redhat.com/show_bug.cgi?id=1930251 • CWE-476: NULL Pointer Dereference •