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CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket. La función irda_setsockopt en net/irda/af_irda.c y siguientes en drivers/staging/irda/net/af_irda.c en el kernel de Linux en versiones anteriores a la 4.17 permite que usuarios locales provoquen una denegación de servicio (uso de memoria previamente liberada en ias_object y cierre inesperado del sistema) o cualquier otro tipo de impacto sin especificar mediante un socket AF_IRDA. • http://www.securityfocus.com/bid/105304 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3775-1 https://usn.ubuntu.com/3775-2 https://usn.ubuntu.com/3776-1 https://usn.ubuntu.com/3776-2 https://usn.ubuntu.com/3777-1 https://usn.ubuntu.com/3777-2 https://usn.ubuntu.com/3777-3 https://www.debian.org/security/2018/dsa-4308 https://www.spinics.net/lists/stable/msg255031.html https://www.spinics.net/lists • CWE-416: Use After Free •

CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 0

An issue was discovered in yurex_read in drivers/usb/misc/yurex.c in the Linux kernel before 4.17.7. Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges. Se descubrió un problema en yurex_read en drivers/usb/misc/yurex.c en el kernel de Linux hasta la versión 4.17.7. Los atacantes locales pueden emplear lecturas/escrituras de acceso de usuario con una comprobación incorrecta de límites en el controlador USB yurex para provocar el cierre inesperado del kernel o escalar privilegios. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f1e255d60ae66a9f672ff9a207ee6cd8e33d2679 https://bugzilla.suse.com/show_bug.cgi?id=1106095 https://bugzilla.suse.com/show_bug.cgi?id=1115593 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.7 https://github.com/torvalds/linux/commit/f1e255d60ae66a9f672ff9a207ee6cd8e33d2679 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3776-1 https://usn.ubuntu.com/3776-2 https • CWE-787: Out-of-bounds Write •

CVSS: 5.6EPSS: 0%CPEs: 7EXPL: 0

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. arch/x86/kernel/paravirt.c en el kernel de Linux en versiones anteriores a la 4.18.1 maneja incorrectamente algunas llamadas indirectas, lo que hace que sea más fácil para los atacantes realizar ataques Spectre-v2 contra guests paravirtuales. It was found that paravirt_patch_call/jump() functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5800dc5c19f34e6e03b5adab1282535cb102fafd http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html http://www.securityfocus.com/bid/105120 http://www.securitytracker.com/id/1041601 https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab12825 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 6.5EPSS: 0%CPEs: 7EXPL: 0

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks. La función spectre_v2_select_mitigation en arch/x86/kernel/cpu/bugs.c en el kernel de Linux en versiones anteriores a la 4.18.1 no siempre completa RSB en un cambio de contexto, lo que hace que sea más fácil para los atacantes realizar ataques spectreRSB espacio de usuario-espacio de usuario. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3775-1 https://usn.ubuntu.com/3775-2 https://usn.ubuntu.com/3776-1 https://usn.ubuntu.com/3776-2 https://usn.ubuntu.com/3777-1 http •

CVSS: 7.8EPSS: 1%CPEs: 152EXPL: 0

The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size. El kernel de Linux en versiones a partir de la 3.9 es vulnerable a un ataque de denegación de servicio (DoS) con tasas bajas de paquetes especialmente modificados que apuntan hacia el reensamblado de fragmentos de IP. • http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-004.txt http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-linux-en http://www.openwall.com/lists/oss-security/2019/06/28/2 http://www.openwall.com/lists/oss-security/2019/07/06/3 http://www.openwall.com/lists/oss-security/2019/07/06/4 http://www.securityfocus.com/bid/105108 http://www.securitytracker.com/id/1041476 http://www.securitytracker.com/id/1041637 https://access.redhat.co • CWE-20: Improper Input Validation CWE-400: Uncontrolled Resource Consumption •