CVSS: 9.3EPSS: 0%CPEs: 24EXPL: 1CVE-2019-19816
https://notcve.org/view.php?id=CVE-2019-19816
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled. En el kernel de Linux versión 5.0.21, montar una imagen del sistema de archivos btrfs especialmente diseñada y realizar algunas operaciones puede causar un acceso de escritura fuera de límites en la función __btrfs_map_block en el archivo fs/btrfs/volumes.c, porque un valor de 1 para el número de franjas de datos es mal manejado. • https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816 https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.netapp.com/advisory/ntap-20200103-0001 https://usn.ubuntu.com/4414-1 • CWE-787: Out-of-bounds Write •
CVSS: 9.3EPSS: 0%CPEs: 1EXPL: 1CVE-2019-19814
https://notcve.org/view.php?id=CVE-2019-19814
In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause __remove_dirty_segment slab-out-of-bounds write access because an array is bounded by the number of dirty types (8) but the array index can exceed this. En el kernel de Linux versión 5.0.21, montar una imagen del sistema de archivos f2fs especialmente diseñada puede causar un acceso de escritura fuera de límites en la función __remove_dirty_segment porque una matriz está limitada por parte del número de tipos sucios (8) pero el índice de la matriz puede exceder esto. • https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19814 https://security.netapp.com/advisory/ntap-20200103-0001 • CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 1CVE-2019-15793 – Mishandling of file-system uid/gid with namespaces in shiftfs
https://notcve.org/view.php?id=CVE-2019-15793
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions. En shiftfs, un parche no upstream para el Kernel de Linux incluido en las series kernel de Ubuntu versiones 5.0 y 5.3, varias ubicaciones que desplazan los ids traducen los ids de usuario/grupo antes de realizar operaciones en el sistema de archivos inferior los estaban traduciendo a init_user_ns, mientras que deberían haber sido traducidos a s_user_ns para el sistema de archivos inferior. Esto dio lugar a que se utilizaran ids distintos de los previstos en los fs inferiores, que probablemente no se mapearon en los shifts s_user_ns. • https://www.exploit-db.com/exploits/47693 https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb https://usn.ubuntu.com/usn/usn-4183-1 https://usn.ubuntu.com/usn/usn-4184-1 • CWE-276: Incorrect Default Permissions CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory •
CVSS: 8.8EPSS: 0%CPEs: 13EXPL: 1CVE-2019-17666 – kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow
https://notcve.org/view.php?id=CVE-2019-17666
rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a certain upper-bound check, leading to a buffer overflow. En la función rtl_p2p_noa_ie en el archivo drivers/net/wireless/realtek/rtlwifi/ps.c en el kernel de Linux versiones hasta 5.3.6, carece de una cierta comprobación de límite superior, lo que conlleva a un desbordamiento del búfer. A flaw was found in the Linux kernel's implementation of the RealTek wireless drivers WiFi-direct (or WiFi peer-to-peer) driver implementation. When the RealTek wireless networking hardware is configured to accept WiFi-Direct or WiFi P2P connections, an attacker within the wireless network connectivity radio range can exploit a flaw in the WiFi-direct protocol known as "Notice of Absence" by creating specially crafted frames which can then corrupt kernel memory as the upper bounds on the length of the frame is unchecked and supplied by the incoming packet. • https://github.com/uthrasri/CVE-2019-17666 http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html https://access.redhat.com/errata/RHSA-2020:0328 https://access.redhat.com/errata/RHSA-2020:0339 https://access.redhat.com/errata/RHSA-2020:0543 https://access.redhat.com/errata/RHSA-2020:0661 https://access.redhat.com/errata/RHSA-2020:0740 https://arstechnica.com/information-technology/2019/10&# • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 9.8EPSS: 1%CPEs: 13EXPL: 1CVE-2019-16746 – kernel: buffer-overflow hardening in WiFi beacon validation code.
https://notcve.org/view.php?id=CVE-2019-16746
An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow. Se detectó un problema en el archivo net/wireless/nl80211.c en el kernel de Linux versiones hasta 5.2.17. No comprueba la longitud de los elementos variables en un beacon head, lo que provoca un desbordamiento del búfer. A flaw in the Linux kernel's WiFi beacon validation code was discovered. • https://github.com/uthrasri/CVE-2019-16746 http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorap • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •