CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2017-18075 – kernel: Mishandled freeing of instances in pcrypt.c can allow a local user to cause a denial of service
https://notcve.org/view.php?id=CVE-2017-18075
crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances, allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls. crypto/pcrypt.c en el kernel de Linux en versiones anteriores a la 4.14.13 gestiona de manera incorrecta la liberación de instancias, lo que permite que un usuario local acceda a la interfaz AEAD basada en AF_ALG (CONFIG_CRYPTO_USER_API_AEAD) y pcrypt (CONFIG_CRYPTO_PCRYPT) para provocar una denegación de servicio (kfree de un puntero incorrecto) o, posiblemente, causar otro tipo de impacto sin especificar mediante la ejecución de una secuencia manipulada de llamadas del sistema. crypto/pcrypt.c in the Linux kernel, before 4.14.13, mishandles freeing instances, allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d76c68109f37cb85b243a1cf0f40313afd2bae68 http://www.securityfocus.com/bid/102813 https://access.redhat.com/errata/RHSA-2018:2948 https://github.com/torvalds/linux/commit/d76c68109f37cb85b243a1cf0f40313afd2bae68 https://usn.ubuntu.com/3619-1 https://usn.ubuntu.com/3619-2 https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.13 https://access.redhat.com/security/cve/CVE-2017-18075 https://bugzilla.redhat.com&#x • CWE-628: Function Call with Incorrectly Specified Arguments CWE-763: Release of Invalid Pointer or Reference •
CVSS: 10.0EPSS: 0%CPEs: 2EXPL: 0CVE-2018-5703
https://notcve.org/view.php?id=CVE-2018-5703
The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.14.11 allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via vectors involving TLS. La función tcp_v6_syn_recv_sock en net/ipv6/tcp_ipv6.c en el kernel de Linux, en versiones hasta la 4.14.11, permite que los atacantes provoquen una denegación de servicio (escritura fuera de límites del bloque) o, posiblemente, causen otros impactos no especificados mediante vectores relacionados con TLS. • https://groups.google.com/d/msg/syzkaller-bugs/0PBeVnSzfqQ/5eXAlM46BQAJ • CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-17975
https://notcve.org/view.php?id=CVE-2017-17975
Use-after-free in the usbtv_probe function in drivers/media/usb/usbtv/usbtv-core.c in the Linux kernel through 4.14.10 allows attackers to cause a denial of service (system crash) or possibly have unspecified other impact by triggering failure of audio registration, because a kfree of the usbtv data structure occurs during a usbtv_video_free call, but the usbtv_video_fail label's code attempts to both access and free this data structure. Uso de memoria previamente liberada en la función usbtv_probe en drivers/media/usb/usbtv/usbtv-core.c en el kernel de Linux hasta la versión 4.14.10 permite que atacantes provoquen una denegación de servicio (cierre inesperado del sistema) o, posiblemente, causen otro tipo de impacto sin especificar desencadenando un error de registro de audio. Esto se debe a que un kfree de la estructura de datos usbtv ocurre durante una llamada usbtv_video_free, pero el código de la etiqueta usbtv_video_fail intenta acceder y liberar esta estructura de datos. • http://linuxtesting.org/pipermail/ldv-project/2017-November/001008.html http://www.securityfocus.com/bid/102330 https://usn.ubuntu.com/3653-1 https://usn.ubuntu.com/3653-2 https://usn.ubuntu.com/3654-1 https://usn.ubuntu.com/3654-2 https://usn.ubuntu.com/3656-1 https://usn.ubuntu.com/3657-1 https://www.debian.org/security/2018/dsa-4188 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2017-17862
https://notcve.org/view.php?id=CVE-2017-17862
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service. kernel/bpf/verifier.c en el kernel de Linux hasta la versión 4.14.8 ignora el código inalcanzable, incluso aunque sea procesado por compiladores en tiempo de ejecución o JIT. Este comportamiento, que también se considera un problema de lógica de poda de ramas incorrecta, podría ser utilizado por usuarios locales para provocar una denegación de servicio (DoS). • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467 http://www.securityfocus.com/bid/102325 http://www.securitytracker.com/id/1040057 https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security https://github.com/torvalds/linux/commit/c131187db2d3fa2f8bf32fdf4e9a4ef805168467 https://usn.ubuntu.com/3619-1 https://usn.ubuntu.com/3619-2 https://usn.ubuntu.com/usn/ • CWE-20: Improper Input Validation •
CVSS: 3.3EPSS: 0%CPEs: 2EXPL: 0CVE-2017-17864
https://notcve.org/view.php?id=CVE-2017-17864
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak." kernel/bpf/verifier.c en el kernel de Linux hasta la versión 4.14.8 gestiona de manera incorrecta las comparaciones states_equal entre el tipo de datos del puntero y el tipo de datos UNKNOWN_VALUE, lo que permite que usuarios locales obtengan información de direcciones sensible. Esto también se conoce como "pointer leak". • http://www.securityfocus.com/bid/102320 http://www.securitytracker.com/id/1040059 https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0 https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security https://usn.ubuntu.com/usn/usn-3523-2 https://www.debian.org/security/2017/dsa-4073 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •