CVSS: 3.8EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20239 – kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure
https://notcve.org/view.php?id=CVE-2021-20239
A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo en el kernel de Linux en versiones anteriores a 5.4.92 en el protocolo BPF. Este fallo permite a un atacante con una cuenta local filtrar información sobre las direcciones internas del kernel. • https://bugzilla.redhat.com/show_bug.cgi?id=1923636 https://access.redhat.com/security/cve/CVE-2021-20239 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-822: Untrusted Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-28375
https://notcve.org/view.php?id=CVE-2021-28375
An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308. Se detectó un problema en el kernel de Linux versiones hasta 5.11.6. La función fastrpc_internal_invoke en el archivo drivers/misc/fastrpc.c no evita a unas aplicaciones de usuario enviar mensajes RPC del kernel, también se conoce como CID-20c40794eb85. Este es un problema relacionado con el CVE-2019-2308 • https://git.kernel.org/linus/20c40794eb85ea29852d7bc37c55713802a543d6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMRQVOTASD3VZP6GE4JJHE27QU6FHTZ6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJPVQZPY3DHPV5I3IVNMSMO6D3PKZISX https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XAUNYDTGE6MB4NWL2SIHPCODCLET3JZB https://lore.kernel.org/stable/YD03ew7+6v0XPh6l%40kroah.com https://security.netapp.com/advisory/ntap-20210401-0003 • CWE-862: Missing Authorization •
CVSS: 6.4EPSS: 0%CPEs: 7EXPL: 0CVE-2021-20261
https://notcve.org/view.php?id=CVE-2021-20261
A race condition was found in the Linux kernels implementation of the floppy disk drive controller driver software. The impact of this issue is lessened by the fact that the default permissions on the floppy device (/dev/fd0) are restricted to root. If the permissions on the device have changed the impact changes greatly. In the default configuration root (or equivalent) permissions are required to attack this flaw. Se encontró una condición de carrera en la implementación del kernel de Linux del software manejador del controlador de la unidad de disquete. • https://bugzilla.redhat.com/show_bug.cgi?id=1932150 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0c80efe5956ccce9fe7ae5c78542578c07bc20a • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.7EPSS: 0%CPEs: 2EXPL: 2CVE-2021-3411
https://notcve.org/view.php?id=CVE-2021-3411
A flaw was found in the Linux kernel in versions prior to 5.10. A violation of memory access was found while detecting a padding of int3 in the linking state. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo en el kernel de Linux en versiones anteriores a 5.10. Se encontró una violación del acceso a la memoria al detectar un relleno de int3 en el estado de enlace. • http://blog.pi3.com.pl/?p=831 https://bugzilla.redhat.com/show_bug.cgi?id=1928236 • CWE-94: Improper Control of Generation of Code ('Code Injection') •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20268
https://notcve.org/view.php?id=CVE-2021-20268
An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo de acceso fuera de límites en la implementación del comprobador de código eBPF en el kernel de Linux, en la manera en que un usuario que ejecuta el script eBPF llama a las funciones dev_map_init_map o sock_map_alloc. Este fallo permite a un usuario local bloquear el sistema o posiblemente escalar sus privilegios. • https://bugzilla.redhat.com/show_bug.cgi?id=1923816 https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444 https://security.netapp.com/advisory/ntap-20210409-0006 • CWE-20: Improper Input Validation CWE-190: Integer Overflow or Wraparound •