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CVE-2020-10757

kernel: kernel: DAX hugepages not considered during mremap

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.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 4 more
Products
Ubuntu Linux Debian Linux Fedora and 10 more
CVE-2020-10725

dpdk: librte_vhost Malicious guest could cause segfault by sending invalid Virtio descriptor

A flaw was found in DPDK version 19.11 and above that allows a malicious guest to cause a segmentation fault of the vhost-user backend application running on the host, which could result in a loss of connectivity for the other guests running on that host. This is caused by a missing validity check of the descriptor address in the function `virtio_dev_rx_batch_packed()`.

CVSS 3.1 · 7.7 High EPSS 2.2% KEV · Not listed
Vendors
Dpdk Fedoraproject Opensuse and 2 more
Products
Data Plane Development Kit Fedora Leap and 3 more
CVE-2020-10713

grub2: Crafted grub.cfg file can lead to arbitrary code execution during boot process

A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 8.2 High EPSS 1.7% KEV · Not listed
Vendors
Debian Gnu Opensuse and 2 more
Products
Debian Linux Grub2 Leap and 7 more
CVE-2020-10711

Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.

CVSS 3.1 · 5.9 Medium EPSS 3.1% KEV · Not listed
Vendors
Canonical Debian Linux and 2 more
Products
Ubuntu Linux Debian Linux Linux Kernel and 14 more
CVE-2020-10663

rubygem-json: Unsafe object creation vulnerability in JSON

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.

CVSS 3.1 · 7.5 High EPSS 6.8% KEV · Not listed
Vendors
Apple Debian Fedoraproject and 4 more
Products
Macos Debian Linux Fedora and 7 more
CVE-2020-0543

hw: Special Register Buffer Data Sampling (SRBDS)

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Canonical Fedoraproject Intel and 4 more
Products
Ubuntu Linux Fedora Celeron 1000m and 721 more
CVE-2020-0466

kernel: use after free in eventpoll.c may lead to escalation of privilege

In do_epoll_ctl and ep_loop_check_proc of eventpoll.c, there is a possible use after free due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-147802478References: Upstream kernel

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Google Redhat
Products
Android Enterprise Linux Rhel Aus and 5 more
CVE-2020-0452

libexif: out of bounds write due to an integer overflow in exif-entry.c

In exif_entry_get_value of exif-entry.c, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution if a third party app used this library to process remote image data with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11 Android-8.0Android ID: A-159625731

CVSS 3.1 · 9.8 Critical EPSS 3.1% KEV · Not listed
Vendors
Fedoraproject Google Redhat
Products
Fedora Android Enterprise Linux and 2 more
CVE-2020-0444

kernel: bad kfree in auditfilter.c may lead to escalation of privilege

In audit_free_lsm_field of auditfilter.c, there is a possible bad kfree due to a logic error in audit_data_to_entry. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-150693166References: Upstream kernel

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Google Redhat
Products
Android Enterprise Linux Rhel Eus
CVE-2020-0256

gdisk: possible out-of-bounds-write in LoadPartitionTable of gpt.cc

In LoadPartitionTable of gpt.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege when inserting a malicious USB device, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-8.0Android ID: A-152874864

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Google Redhat
Products
Debian Linux Android Enterprise Linux and 1 more
CVE-2019-9924

bash: BASH_CMD is writable in restricted bash shells

rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Debian Gnu and 3 more
Products
Ubuntu Linux Debian Linux Bash and 9 more
CVE-2019-9506

Blutooth BR/EDR specification does not specify sufficient encryption key length and allows an attacker to influence key length negotiation

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka "KNOB") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing.

CVSS 3.1 · 8.1 High EPSS 2.9% KEV · Not listed
Vendors
Apple Blackberry Canonical and 5 more
Products
Iphone Os Mac Os X Tvos and 277 more
CVE-2019-9503

Broadcom brcmfmac driver is vulnerable to a frame validation bypass

The Broadcom brcmfmac WiFi driver prior to commit a4176ec356c73a46c07c181c6d04039fafa34a9f is vulnerable to a frame validation bypass. If the brcmfmac driver receives a firmware event frame from a remote source, the is_wlc_event_frame function will cause this frame to be discarded and unprocessed. If the driver receives the firmware event frame from the host, the appropriate handler is called. This frame validation can be bypassed if the bus used is USB (for instance by a wifi dongle). This can allow firmware event frames from a remote source to be processed. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.

CVSS 3.1 · 7.9 High EPSS 3.3% KEV · Not listed
Vendors
Broadcom Redhat
Products
Brcmfmac Driver Enterprise Linux Rhel Eus and 1 more
CVE-2019-9500

Broadcom brcmfmac driver is vulnerable to a heap buffer overflow

The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.

CVSS 3.1 · 7.9 High EPSS 3.9% KEV · Not listed
Vendors
Broadcom Linux Redhat
Products
Brcmfmac Driver Linux Kernel Enterprise Linux and 2 more
CVE-2019-9454

kernel: out of bounds write in i2c driver leads to local escalation of privilege

In the Android kernel in i2c driver there is a possible out of bounds write due to memory corruption. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Google Redhat
Products
Android Enterprise Linux Rhel Aus and 4 more
CVE-2019-6454

systemd: Insufficient input validation in bus_process_object() resulting in PID 1 crash

An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).

CVSS 3.1 · 5.5 Medium EPSS 2.0% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 5 more
Products
Ubuntu Linux Debian Linux Fedora and 23 more