CVSS: 8.8EPSS: 0%CPEs: 15EXPL: 0CVE-2020-29569
https://notcve.org/view.php?id=CVE-2020-29569
An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. • https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.gentoo.org/glsa/202107-30 https://security.netapp.com/advisory/ntap-20210205-0001 https://www.debian.org/security/2021/dsa-4843 https://xenbits.xenproject.org/xsa/advisory-350.html • CWE-416: Use After Free •
CVSS: 3.6EPSS: 0%CPEs: 12EXPL: 2CVE-2020-29374
https://notcve.org/view.php?id=CVE-2020-29374
An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58. Se detectó un problema en el kernel de Linux versiones anteriores a 5.7.3, relacionado con los archivos mm/gup.c y mm/huge_memory.c. La implementación de la función get_user_pages (también se conoce como gup), cuando se usa para una página copy-on-write, no considera apropiadamente la semántica de las operaciones de lectura y, por lo tanto, puede otorgar acceso de escritura involuntario, también se conoce como CID-17839856fd58 • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.debi • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-863: Incorrect Authorization •
CVSS: 7.8EPSS: 0%CPEs: 222EXPL: 0CVE-2020-8739
https://notcve.org/view.php?id=CVE-2020-8739
Use of potentially dangerous function in Intel BIOS platform sample code for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access. El uso de una función potencialmente peligrosa en el código de muestra de la plataforma Intel BIOS para algunos Intel® Processors puede habilitar a un usuario autenticado para permitir potencialmente una escalada de privilegios por medio de un acceso local • https://security.netapp.com/advisory/ntap-20210122-0008 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390 •
CVSS: 6.7EPSS: 0%CPEs: 370EXPL: 0CVE-2020-8740
https://notcve.org/view.php?id=CVE-2020-8740
Out of bounds write in Intel BIOS platform sample code for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access. Una escritura fuera de límites en el código de muestra de la plataforma Intel BIOS para algunos Intel® Processors puede habilitar a un usuario privilegiado para permitir potencialmente una escalada de privilegios por medio de un acceso local • https://security.netapp.com/advisory/ntap-20210122-0008 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390 • CWE-787: Out-of-bounds Write •
CVSS: 6.7EPSS: 0%CPEs: 347EXPL: 0CVE-2020-8738
https://notcve.org/view.php?id=CVE-2020-8738
Improper conditions check in Intel BIOS platform sample code for some Intel(R) Processors before may allow a privileged user to potentially enable escalation of privilege via local access. Una comprobación de condiciones inapropiadas en el código de muestra de la plataforma Intel BIOS para algunos Intel® Processors antes puede habilitar a un usuario privilegiado para permitir potencialmente una escalada de privilegios por medio de un acceso local • https://security.netapp.com/advisory/ntap-20210122-0008 https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390 • CWE-754: Improper Check for Unusual or Exceptional Conditions •