CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-23134 – Linux kernel llcp_sock_bind/connect use-after-free
https://notcve.org/view.php?id=CVE-2021-23134
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability. Una vulnerabilidad de uso de la memoria previamente liberada en nfc sockets en el Kernel de Linux versiones anteriores a 5.12.4 permite a atacantes locales escalar sus privilegios. En configuraciones típicas, el problema solo puede ser desencadenado por un usuario local privilegiado con la capacidad CAP_NET_RAW • https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c61760e6940d https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZYORWNQIHNWRFYRDXBWYWBYM46PDZEN https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QALNQT4LJFVSSA3MWCIECVY4AFPP4X77 https://security.netapp.com/advisory/ntap-20210625 • CWE-416: Use After Free •
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: 7.0EPSS: 0%CPEs: 19EXPL: 1CVE-2021-32399 – kernel: race condition for removal of the HCI controller
https://notcve.org/view.php?id=CVE-2021-32399
net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller. El archivo net/bluetooth/hci_request.c en el kernel de Linux versiones hasta 5.12.2, presenta una condición de carrera para la eliminación del controlador HCI A flaw was found in the Linux kernel’s handling of the removal of Bluetooth HCI controllers. This flaw allows an attacker with a local account to exploit a race condition, leading to corrupted memory and possible privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. • http://www.openwall.com/lists/oss-security/2021/05/11/2 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e2cb6b891ad2b8caa9131e3be70f45243df82a80 https://github.com/torvalds/linux/commit/e2cb6b891ad2b8caa9131e3be70f45243df82a80 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-20210622-0006 https://access.redhat.com/security/cve/CVE-2021-32399 https:&#x • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.7EPSS: 0%CPEs: 4EXPL: 0CVE-2021-31916 – kernel: out of bounds array access in drivers/md/dm-ioctl.c
https://notcve.org/view.php?id=CVE-2021-31916
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege 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 escritura de la memoria fuera de límites (OOB) en la función list_devices en el archivo drivers/md/dm-ioctl.c en el módulo de controlador Multi-device en el kernel de Linux versiones anteriores a 5.12. Un fallo de comprobación limitada permite a un atacante con privilegios de usuario especial (CAP_SYS_ADMIN) 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=1946965 https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://seclists.org/oss-sec/2021/q1/268 https://access.redhat.com/security/cve/CVE-2021-31916 • CWE-787: Out-of-bounds Write •
CVSS: 6.2EPSS: 0%CPEs: 5EXPL: 0CVE-2021-31829 – kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory
https://notcve.org/view.php?id=CVE-2021-31829
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel. El archivo kernel/bpf/verifier.c en el kernel de Linux versiones hasta 5.12.1, lleva a cabo cargas especulativas no deseadas, conllevando a una divulgación del contenido de la pila por medio de ataques side-channel, también se conoce como CID-801c6058d14a. La preocupación específica no es proteger el área de la pila de BPF contra cargas especulativas. • http://www.openwall.com/lists/oss-security/2021/05/04/4 https://github.com/torvalds/linux/commit/801c6058d14a82179a7ee17a4b532cac6fad067f https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VWCZ6LJLENL2C3URW5ICARTACXPFCFN2 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4X2G5YAPYJGI3PFEZZNOTRYI33GOCCZ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-863: Incorrect Authorization •