CVSS: 7.8EPSS: 0%CPEs: 24EXPL: 0CVE-2021-3483
https://notcve.org/view.php?id=CVE-2021-3483
A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected Se encontró una fallo en el controlador Nosy en el kernel de Linux. Este problema permite a un dispositivo ser insertado dos veces en una lista doblemente enlazada, conllevando a un uso de la memoria previamente liberada cuando uno de estos dispositivos es eliminado. • http://www.openwall.com/lists/oss-security/2021/04/07/1 https://bugzilla.redhat.com/show_bug.cgi?id=1948045 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://security.netapp.com/advisory/ntap-20210629-0002 • CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 25EXPL: 0CVE-2020-35519
https://notcve.org/view.php?id=CVE-2020-35519
An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo de acceso a la memoria fuera de los límites (OOB) en la función x25_bind en el archivo net/x25/af_x25.c en el kernel de Linux versión v5.12-rc5. Un fallo en la comprobación de límites permite a un atacante local con una cuenta de usuario en el sistema conseguir acceso a la memoria fuera de límites, conllevando a un bloqueo del sistema o una filtración de información interna del kernel. • https://bugzilla.redhat.com/show_bug.cgi?id=1908251 https://security.netapp.com/advisory/ntap-20210618-0009 • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 0%CPEs: 28EXPL: 0CVE-2021-3501 – kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
https://notcve.org/view.php?id=CVE-2021-3501
A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability. Se encontró un fallo en el kernel de Linux en versiones anteriores a 5.12. El valor de internal.ndata, en la API de KVM, es asignado a un índice de matriz, que puede ser actualizado por un proceso de usuario en cualquier momento, lo que podría conllevar a una escritura fuera de límites. • https://bugzilla.redhat.com/show_bug.cgi?id=1950136 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a https://security.netapp.com/advisory/ntap-20210618-0008 https://access.redhat.com/security/cve/CVE-2021-3501 • CWE-787: Out-of-bounds Write •
CVSS: 7.0EPSS: 0%CPEs: 30EXPL: 1CVE-2021-23133 – Linux Kernel sctp_destroy_sock race condition
https://notcve.org/view.php?id=CVE-2021-23133
A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket. Una condición de carrera en los sockets SCTP del kernel de Linux (el archivo net/sctp/socket.c) versiones anteriores a 5.12-rc8, puede conllevar a una escalada de privilegios del kernel desde el contexto de un servicio de red o un proceso no privilegiado. Si la función sctp_destroy_sock es llamado sin sock_net (sk) -) sctp.addr_wq_lock, un elemento es eliminado de la lista auto_asconf_splist sin ningún bloqueo apropiado. • http://www.openwall.com/lists/oss-security/2021/05/10/1 http://www.openwall.com/lists/oss-security/2021/05/10/2 http://www.openwall.com/lists/oss-security/2021/05/10/3 http://www.openwall.com/lists/oss-security/2021/05/10/4 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b166a20b07382b8bc1dcee2a448715c9c2c81b5b https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg000 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.1EPSS: 0%CPEs: 24EXPL: 0CVE-2021-3506
https://notcve.org/view.php?id=CVE-2021-3506
An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. Se encontró un fallo de acceso a la memoria fuera de límites (OOB) en el archivo fs/f2fs/node.c en el módulo f2fs en el kernel de Linux en versiones anteriores a 5.12.0-rc4. Un fallo en la comprobación de límites permite a un atacante local conseguir acceso a la memoria fuera de límites, conllevando a un bloqueo del sistema o una fuga de información interna del kernel. • http://www.openwall.com/lists/oss-security/2021/05/08/1 https://bugzilla.redhat.com/show_bug.cgi?id=1944298 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://security.netapp.com/advisory/ntap-20210611-0007 https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg2520013.html https://www.openwall.com/lists/oss-security/2021/03/28/2 • CWE-125: Out-of-bounds Read •