CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0CVE-2020-11565 – kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c
https://notcve.org/view.php?id=CVE-2020-11565
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.” ** EN DISPUTA ** Se detectó un problema en el kernel de Linux versiones hasta 5.6.2. La función mpol_parse_str en el archivo mm/mempolicy.c presenta una escritura fuera de límites en la región stack de la memoria porque una lista de nodos vacía es manejada inapropiadamente durante el análisis de la opción de montaje, también se conoce como CID-aa9f7d5172fa. NOTA: Alguien en la comunidad de seguridad no está de acuerdo en que se trata de una vulnerabilidad porque el problema "es un error en el análisis de las opciones de montaje que sólo puede ser especificado por un usuario privilegiado, por lo que la activación del error no otorga ningún poder que no se tenga ya". An out-of-bounds write flaw was found in the Linux kernel. • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://usn.ubuntu.com/4363-1 https://usn.ubuntu.com/4364-1 https://usn.ubuntu.com/4367-1 https:&# • CWE-787: Out-of-bounds Write •
CVSS: 5.4EPSS: 0%CPEs: 9EXPL: 1CVE-2020-10942 – kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field
https://notcve.org/view.php?id=CVE-2020-10942
In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls. En el kernel de Linux versiones anteriores a 5.5.8, la función get_raw_socket en el archivo drivers/vhost/net.c carece de una comprobación de un campo sk_family, que podría permitir a atacantes desencadenar una corrupción de pila del kernel por medio de llamadas de sistema diseñadas. A stack buffer overflow issue was found in the get_raw_socket() routine of the Host kernel accelerator for virtio net (vhost-net) driver. It could occur while doing an ictol(VHOST_NET_SET_BACKEND) call, and retrieving socket name in a kernel stack variable via get_raw_socket(). A user able to perform ioctl(2) calls on the '/dev/vhost-net' device may use this flaw to crash the kernel resulting in DoS issue. • http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html http://www.openwall.com/lists/oss-security/2020/04/15/4 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.8 https://git.kernel.org/linus/42d84c8490f9f0931786f1623191fcab397c3d64 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://lkml.org/lkm • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 1CVE-2011-4915
https://notcve.org/view.php?id=CVE-2011-4915
fs/proc/base.c in the Linux kernel through 3.1 allows local users to obtain sensitive keystroke information via access to /proc/interrupts. El archivo fs/proc/base.c en el kernel de Linux versiones hasta 3.1, permite a usuarios locales obtener información confidencial de pulsaciones de teclas por medio del acceso a /proc/interrupts. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0499680a42141d86417a8fbaa8c8db806bea1201 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2ef990ab5a6705a356d146dd773a3b359787497 http://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-4915.html http://www.openwall.com/lists/oss-security/2011/11/07/9 https://lkml.org/lkml/2011/11/7/340 https://seclists.org/oss-sec/2011/q4/571 https://security-tracker.debian.org/tracker/CVE- • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 14EXPL: 0CVE-2020-8992
https://notcve.org/view.php?id=CVE-2020-8992
ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a denial of service (soft lockup) via a crafted journal size. La función ext4_protect_reserved_inode en el archivo fs/ext4/block_validity.c en el kernel de Linux versiones hasta 5.5.3, permite a atacantes causar una denegación de servicio (soft lockup) por medio de un journal size diseñado. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html https://patchwork.ozlabs.org/patch/1236118 https://security.netapp.com/advisory/ntap-20200313-0003 https://usn.ubuntu.com/4318-1 https://usn.ubuntu.com/4324-1 https://usn.ubuntu.com/4342-1 https://usn.ubuntu.com/4344-1 https://usn.ubuntu.com/4419-1 • CWE-400: Uncontrolled Resource Consumption CWE-834: Excessive Iteration •
CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 0CVE-2020-8647 – kernel: out-of-bounds read in in vc_do_resize function in drivers/tty/vt/vt.c
https://notcve.org/view.php?id=CVE-2020-8647
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in drivers/tty/vt/vt.c. Se presenta una vulnerabilidad de uso de la memoria previamente liberada en el kernel de Linux versiones hasta 5.5.2 en la función vc_do_resize en el archivo drivers/tty/vt/vt.c. A flaw was found in the Linux kernel’s virtual console resize functionality. An attacker with local access to virtual consoles can use the virtual console resizing code to gather kernel internal data structures. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html https://bugzilla.kernel.org/show_bug.cgi?id=206359 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://www.debian.org/security/2020/dsa-4698 https://access.redhat.com/security/cve/CVE-2020-8647 https://bugzilla.redhat.com/show_bug.cgi?id=1802563 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-416: Use After Free •