CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 1CVE-2021-27363 – kernel: iscsi: unrestricted access to sessions and handles
https://notcve.org/view.php?id=CVE-2021-27363
07 Mar 2021 — An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointe... • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-28039
https://notcve.org/view.php?id=CVE-2021-28039
05 Mar 2021 — An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG. Se detectó un problema en el kernel de Linux versiones 5.9.x hasta 5.11.3, como es usada con Xen. En algunas configuraciones menos comunes, ... • http://www.openwall.com/lists/oss-security/2021/03/05/2 • CWE-131: Incorrect Calculation of Buffer Size •
CVSS: 6.5EPSS: 0%CPEs: 12EXPL: 0CVE-2021-28038
https://notcve.org/view.php?id=CVE-2021-28038
05 Mar 2021 — An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931. Se detectó un problema en el kernel de Linux versiones hasta 5.11.3, como es usada con Xen PV. • http://www.openwall.com/lists/oss-security/2021/03/05/1 • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 4.9EPSS: 0%CPEs: 11EXPL: 1CVE-2020-25639
https://notcve.org/view.php?id=CVE-2020-25639
04 Mar 2021 — A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system. Se encontró un fallo de desreferencia del puntero NULL en la funcionalidad del controlador GPU Nouveau del kernel de Linux en versiones anteriores a 5.12-rc1, en la manera en que el usuario llama a ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. Este fallo permite que un usuari... • https://bugzilla.redhat.com/show_bug.cgi?id=1876995 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-27830
https://notcve.org/view.php?id=CVE-2020-27830
25 Feb 2021 — A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash. Se encontró una vulnerabilidad en el kernel de Linux donde, en la función spk_ttyio_receive_buf2(), podría desreferenciar spk_ttyio_synth sin comprobar si es NULL o no, y puede conllevar a un bloqueo deref de NULL-ptr • http://www.openwall.com/lists/oss-security/2020/12/08/1 • CWE-476: NULL Pointer Dereference •
CVSS: 4.5EPSS: 0%CPEs: 38EXPL: 0CVE-2020-35508 – kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
https://notcve.org/view.php?id=CVE-2020-35508
25 Feb 2021 — A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process. Se ha encontrado una posibilidad de fallo de condición de carrera y de inicialización incorrecta del id del proceso en el manejo del id del proceso child/parent del kernel de Linux mientras se filtran los manejadore... • https://bugzilla.redhat.com/show_bug.cgi?id=1902724 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-665: Improper Initialization •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 1CVE-2020-28588
https://notcve.org/view.php?id=CVE-2020-28588
25 Feb 2021 — An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents. Se presenta una vulnerabilidad de divulgación de información ... • https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211 • CWE-681: Incorrect Conversion between Numeric Types •
CVSS: 7.2EPSS: 0%CPEs: 1EXPL: 0CVE-2020-35499
https://notcve.org/view.php?id=CVE-2020-35499
19 Feb 2021 — A NULL pointer dereference flaw in Linux kernel versions prior to 5.11 may be seen if sco_sock_getsockopt function in net/bluetooth/sco.c do not have a sanity check for a socket connection, when using BT_SNDMTU/BT_RCVMTU for SCO sockets. This could allow a local attacker with a special user privilege to crash the system (DOS) or leak kernel internal information. Un fallo de desreferencia del puntero NULL en versiones del kernel anteriores a 5.11, se puede visualizar si la función sco_sock_getsockopt en el a... • https://bugzilla.redhat.com/show_bug.cgi?id=1910048 • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-26934
https://notcve.org/view.php?id=CVE-2021-26934
17 Feb 2021 — An issue was discovered in the Linux kernel 4.18 through 5.10.16, as used by Xen. The backend allocation (aka be-alloc) mode of the drm_xen_front drivers was not meant to be a supported configuration, but this wasn't stated accordingly in its support status entry. Se detectó un problema en el kernel de Linux versiones 4.18 hasta 5.10.16, como es usado por Xen. El modo de asignación del backend de los controladores drm_xen_front no estaba destinado a ser una configuración soportada, pero esto no fue declarad... • http://xenbits.xen.org/xsa/advisory-363.html •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-26930
https://notcve.org/view.php?id=CVE-2021-26930
17 Feb 2021 — An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing sa... • http://xenbits.xen.org/xsa/advisory-365.html •