
CVE-2020-25673 – Ubuntu Security Notice USN-4982-1
https://notcve.org/view.php?id=CVE-2020-25673
19 Apr 2021 — A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak and eventually hanging-up the system. Se encontró una vulnerabilidad en el kernel de Linux en la que el socket non-blocking en la función llcp_sock_connect() conduce a un filtrado de información y eventualmente bloquea el sistema Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could us... • http://www.openwall.com/lists/oss-security/2020/11/01/1 • CWE-400: Uncontrolled Resource Consumption •

CVE-2020-25670 – Ubuntu Security Notice USN-4982-1
https://notcve.org/view.php?id=CVE-2020-25670
19 Apr 2021 — A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations. Se encontró una vulnerabilidad en el kernel de Linux donde un filtrado de refcount en la función llcp_sock_bind() causa un uso de la memoria previamente liberada que podría conllevar a una escaladas de privilegios Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ... • http://www.openwall.com/lists/oss-security/2020/11/01/1 • CWE-416: Use After Free •

CVE-2020-25671 – Ubuntu Security Notice USN-5343-1
https://notcve.org/view.php?id=CVE-2020-25671
19 Apr 2021 — A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations. Se encontró una vulnerabilidad en el Kernel de Linux, donde un filtrado de refcount en la función llcp_sock_connect() causa un uso de la memoria previamente liberada que podría conllevar a una escaladas de privilegios Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulne... • http://www.openwall.com/lists/oss-security/2020/11/01/1 • CWE-416: Use After Free •

CVE-2021-3483 – Ubuntu Security Notice USN-4982-1
https://notcve.org/view.php?id=CVE-2021-3483
19 Apr 2021 — 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 ... • http://www.openwall.com/lists/oss-security/2021/04/07/1 • CWE-416: Use After Free •

CVE-2020-36322 – kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations
https://notcve.org/view.php?id=CVE-2020-36322
14 Apr 2021 — An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as CVE-2021-28950. Se detectó un problema en la implementación del sistema de archivos FUSE en el kernel de Linux versiones anteriores a 510.6, también se conoce como CID-5d069dbe8aaf. La función fu... • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.6 • CWE-459: Incomplete Cleanup •

CVE-2021-3428 – kernel: integer overflow in ext4_es_cache_extent
https://notcve.org/view.php?id=CVE-2021-3428
10 Apr 2021 — A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat. Se ha encontrado un fallo en el kernel de Linux. Es identificado un problema de denegación de servicio si es corrompido un árbol de extensiones en un sistema de archivos e... • https://bugzilla.redhat.com/show_bug.cgi?id=1972621 • CWE-190: Integer Overflow or Wraparound •

CVE-2020-35519 – Ubuntu Security Notice USN-4947-1
https://notcve.org/view.php?id=CVE-2020-35519
10 Apr 2021 — 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_bi... • https://bugzilla.redhat.com/show_bug.cgi?id=1908251 • CWE-125: Out-of-bounds Read •

CVE-2021-29154 – kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation
https://notcve.org/view.php?id=CVE-2021-29154
08 Apr 2021 — BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. Los compiladores BPF JIT en el kernel de Linux hasta la versión 5.11.12 tienen un cálculo incorrecto de los desplazamientos de rama, lo que les permite ejecutar código arbitrario dentro del contexto del kernel. Esto afecta a arch/x86/net/bpf_jit_comp.c y arch/x86... • http://packetstormsecurity.com/files/162434/Kernel-Live-Patch-Security-Notice-LSN-0076-1.html • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVE-2020-36310 – Debian Security Advisory 5095-1
https://notcve.org/view.php?id=CVE-2020-36310
06 Apr 2021 — An issue was discovered in the Linux kernel before 5.8. arch/x86/kvm/svm/svm.c allows a set_memory_region_test infinite loop for certain nested page faults, aka CID-e72436bc3a52. Se detectó un problema en el kernel de Linux versiones anteriores a 5.8. El archivo arch/x86/kvm/svm/svm.c permite un bucle infinito en la función set_memory_region_test para determinados fallos de página anidadas, también se conoce como CID-e72436bc3a52 An update that solves 52 vulnerabilities and has 250 fixes is now availab... • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVE-2021-30178
https://notcve.org/view.php?id=CVE-2021-30178
06 Apr 2021 — An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x86/kvm/hyperv.c has a NULL pointer dereference for certain accesses to the SynIC Hyper-V context, aka CID-919f4ebc5987. Se detectó un problema en el kernel de Linux versiones hasta 5.11.11. La función synic_get en el archivo arch/x86/kvm/hyperv.c presenta una desreferencia de puntero NULL para determinados accesos en el contexto SynIC Hyper-V, también se conoce como CID-919f4ebc5987 • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=919f4ebc598701670e80e31573a58f1f2d2bf918 • CWE-476: NULL Pointer Dereference •