CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 1CVE-2021-27365 – kernel: heap buffer overflow in the iSCSI subsystem
https://notcve.org/view.php?id=CVE-2021-27365
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message. Se detectó un problema en el kernel de Linux versiones hasta 5.11.3. Determinadas estructuras de datos iSCSI no tienen restricciones de longitud o comprobaciones apropiadas y pueden exceder el valor PAGE_SIZE. • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html https://bugzilla.suse.com/show_bug.cgi?id=1182715 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5 https://lists.debian.org/debian-lts-announce/2021/03&# • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.1EPSS: 0%CPEs: 9EXPL: 1CVE-2021-27364 – kernel: out-of-bounds read in libiscsi module
https://notcve.org/view.php?id=CVE-2021-27364
An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is adversely affected by the ability of an unprivileged user to craft Netlink messages. Se detectó un problema en el kernel de Linux versiones hasta 5.11.3. El archivo drivers/scsi/scsi_transport_iscsi.c está afectado negativamente por la capacidad de un usuario sin privilegios de crear mensajes Netlink A flaw was found in the Linux kernel. An out-of-bounds read was discovered in the libiscsi module that could lead to reading kernel memory or a crash. The highest threat from this vulnerability is to data confidentiality as well as system availability. • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html https://bugzilla.suse.com/show_bug.cgi?id=1182717 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://security.netapp.com&# • CWE-125: Out-of-bounds Read •
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
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 pointer to an iscsi_transport struct in the kernel module's global variables. • http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html http://www.openwall.com/lists/oss-security/2021/03/06/1 https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html https://bugzilla.suse.com/show_bug.cgi?id=1182716 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://lists.debian.org/debian&# • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 4.9EPSS: 0%CPEs: 11EXPL: 1CVE-2020-25639
https://notcve.org/view.php?id=CVE-2020-25639
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 usuario local bloquee el sistema • https://bugzilla.redhat.com/show_bug.cgi?id=1876995 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SUCBCKRHWP3UD2AVVYQJE7BIJEMCMXW5 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-27830
https://notcve.org/view.php?id=CVE-2020-27830
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 http://www.openwall.com/lists/oss-security/2020/12/08/4 https://bugzilla.redhat.com/show_bug.cgi?id=1919900 https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://security.netapp.com/advisory/ntap-20210625-0004 https://www.debian.org/security/2021/dsa-4843 • CWE-476: NULL Pointer Dereference •