CVSS: 4.4EPSS: 0%CPEs: 41EXPL: 0CVE-2020-10732 – kernel: uninitialized kernel data leak in userspace coredumps
https://notcve.org/view.php?id=CVE-2020-10732
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data. Se encontró un fallo en la implementación de los volcados de núcleo del Userspace del kernel de Linux. Este fallo permite a un atacante con una cuenta local bloquear un programa trivial y exfiltrar datos privados del kernel A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10732 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=aca969cacf07f41070d788ce2b8ca71f09d5207d https://github.com/google/kmsan/issues/76 https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0a https://lore.kernel.org/lkml/CAG_fn=VZZ7yUxtOGzuTLkr7wmfXWtKK9BHHYawj • CWE-908: Use of Uninitialized Resource •
CVSS: 7.8EPSS: 0%CPEs: 18EXPL: 1CVE-2020-10757 – kernel: kernel: DAX hugepages not considered during mremap
https://notcve.org/view.php?id=CVE-2020-10757
A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system. Se encontró un fallo en el kernel de Linux en las versiones posteriores a 4.5-rc1, en la manera en que mremap manejó DAX Huge Pages. Este fallo permite a un atacante local con acceso a un almacenamiento habilitado para DAX escalar sus privilegios en el sistema A flaw was found in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html https://bugzilla.redhat.com/show_bug.cgi?id=1842525 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bfea2d9b17f1034a68147a8b03b9789af5700f9 https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IEM47BXZJLODRH5YNNZSAQ2NVM63MYMC https://security.netapp.com/advisory/ntap-20200702-0004 https://usn.ubuntu.com& • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 1CVE-2020-13974 – kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c
https://notcve.org/view.php?id=CVE-2020-13974
An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case. Se detectó un problema en el kernel de Linux versión 4.4 hasta la versión 5.7.1. En el archivo drivers/tty/vt/keyboard.c presenta un desbordamiento de enteros si se llama a la función k_ascii varias veces seguidas, también se conoce como CID-b86dab054059. NOTA: Los miembros de la comunidad argumentan que el desbordamiento de números enteros no conduce a un problema de seguridad en este caso A flaw integer overflow in the Linux kernel's virtual terminal keyboard driver was found in the way the user sends some specific keyboard code multiple times. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932b https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html https://lkml.org/lkml/2020/3/22/482 https://usn.u • CWE-190: Integer Overflow or Wraparound •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2019-20811 – kernel: net-sysfs: *_queue_add_kobject refcount issue
https://notcve.org/view.php?id=CVE-2019-20811
An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c. Se detectó un problema en el kernel de Linux versiones anteriores a 5.0.6. En la funciones rx_queue_add_kobject() y netdev_queue_add_kobject() en el archivo net/core/net-sysfs.c, un reconteo de referencias es manejado inapropiadamente, también se conoce como CID-a3e23f719f5c. A flaw was found in the way the rx_queue_add_kobject and netdev_queue_add_kobject functions in the Linux kernel handled refcounting of certain objects. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a3e23f719f5c4a38ffb3d30c8d7632a4ed8ccd9e https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://usn.ubuntu.com/4527-1 https://www.debian.org/security/2020/dsa-4698 https://access.redhat.com/security/cve/CVE-2019-20811 https://bugzilla.redhat.com/show_bug.cgi?id=1846439 • CWE-460: Improper Cleanup on Thrown Exception •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2019-20812 – kernel: af_packet: TPACKET_V3: invalid timer timeout on error
https://notcve.org/view.php?id=CVE-2019-20812
An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067. Se detectó un problema en el kernel de Linux versiones anteriores a 5.4.7. La función prb_calc_retire_blk_tmo() en el archivo net/packet/af_packet.c puede resultar en una denegación de servicio (consumo de CPU y bloqueo suave) en un caso de fallo que involucra TPACKET_V3, también se conoce como CID-b43d1f9f7067. A flaw was found in the way the af_packet functionality in the Linux kernel handled the retirement timer setting for TPACKET_v3 when getting settings from the underlying network device errors out. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.7 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe https://www.oracle.com/security-alerts/cpuApr2021.html https://access.redhat.com/security/cve/CVE-2019-20812 https://bugzilla.redhat.com/show_bug.cgi?id=1846462 • CWE-400: Uncontrolled Resource Consumption •