CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-15274 – kernel: dereferencing NULL payload with nonzero length
https://notcve.org/view.php?id=CVE-2017-15274
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192. security/keys/keyctl.c en el kernel de Linux en versiones anteriores a la 4.11.5 no tiene en cuenta el caso de una carga útil NULL junto con un valor de longitud que no sea cero, lo que permite a usuarios locales provocar una denegación de servicio (desreferencia de puntero NULL and OOPS) mediante una llamada de sistema add_key o keyctl manipulada. Esta es una vulnerabilidad diferente a CVE-2017-12192. A flaw was found in the implementation of associative arrays where the add_key systemcall and KEYCTL_UPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer dereference (kernel oops). • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5649645d725c73df4302428ee4e02c869248b4c5 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.5 http://www.securityfocus.com/bid/101292 https://access.redhat.com/errata/RHSA-2019:1946 https://bugzilla.suse.com/show_bug.cgi?id=1045327 https://github.com/torvalds/linux/commit/5649645d725c73df4302428ee4e02c869248b4c5 https://patchwork.kernel.org/patch/9781573 https://usn.ubuntu.com/3583-1 https://usn.ubuntu.com&# • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-12192 – kernel: NULL pointer dereference due to KEYCTL_READ on negative key
https://notcve.org/view.php?id=CVE-2017-12192
The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation. La función keyctl_read_key en security/keys/keyctl.c en el subcomponente Key Management en el kernel de Linux en versiones anteriores a la 4.13.5 no considera correctamente que se puede tener una clave instanciada negativamente, lo que permite que los usuarios locales provoquen una denegación de servicio (OOPS y cierre inesperado del sistema) mediante una operación KEYCTL_READ manipulada. A vulnerability was found in the Key Management sub component of the Linux kernel, where when trying to issue a KEYTCL_READ on a negative key would lead to a NULL pointer dereference. A local attacker could use this flaw to crash the kernel. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 https://access.redhat.com/errata/RHSA-2018:0151 https://bugzilla.redhat.com/show_bug.cgi?id=1493435 https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678 https://lkml.org/lkml/2017/9/18/764 https://usn.ubuntu.com/3583-1 https://usn.ubuntu.com/3583-2 https://access.redhat.com • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-14991
https://notcve.org/view.php?id=CVE-2017-14991
The sg_ioctl function in drivers/scsi/sg.c in the Linux kernel before 4.13.4 allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for /dev/sg0. La función sg_ioctl en drivers/scsi/sg.c en el kernel de Linux en versiones anteriores a la 4.13.4 permite que los usuarios locales obtengan información sensible de zonas de la memoria dinámica del kernek no inicializadas mediante una llamada IOCTL SG_GET_REQUEST_TABLE a /dev/sg0. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e0097499839e0fe3af380410eababe5a47c4cf9 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.4 http://www.securityfocus.com/bid/101187 https://github.com/torvalds/linux/commit/3e0097499839e0fe3af380410eababe5a47c4cf9 https://usn.ubuntu.com/3754-1 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-14954
https://notcve.org/view.php?id=CVE-2017-14954
The waitid implementation in kernel/exit.c in the Linux kernel through 4.13.4 accesses rusage data structures in unintended cases, which allows local users to obtain sensitive information, and bypass the KASLR protection mechanism, via a crafted system call. La implementación waitid en kernel/exit.c en el kernel de Linux hasta la versión 4.13.4 accede a estructuras de datos rusage en casos que no debería, lo que permite a los usuarios locales obtener información sensible y omitir el mecanismo de protección KASLR mediante una llamada al sistema manipulada. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9 https://github.com/torvalds/linux/commit/6c85501f2fabcfc4fc6ed976543d252c4eaf4be9 https://grsecurity.net/~spender/exploits/wait_for_kaslr_to_be_effective.c https://twitter.com/_argp/status/914021130712870912 https://twitter.com/grsecurity/status/914079864478666753 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2017-1000252 – kernel: kvm: Reachable BUG() on out-of-bounds guest IRQ
https://notcve.org/view.php?id=CVE-2017-1000252
The KVM subsystem in the Linux kernel through 4.13.3 allows guest OS users to cause a denial of service (assertion failure, and hypervisor hang or crash) via an out-of bounds guest_irq value, related to arch/x86/kvm/vmx.c and virt/kvm/eventfd.c. El subsistema KVM en el kernel de Linux hasta la versión 4.13.3 permite que los usuarios invitados del sistema operativo provoquen una denegación de servicio (fallo de aserción y bloqueo o cierre inesperado del hipervisor) mediante un valor guest_irq fuera de límites, relacionado con arch/x86/kvm/vmx.c y virt/kvm/eventfd.c. A reachable assertion failure flaw was found in the Linux kernel built with KVM virtualisation(CONFIG_KVM) support with Virtual Function I/O feature (CONFIG_VFIO) enabled. This failure could occur if a malicious guest device sent a virtual interrupt (guest IRQ) with a larger (>1024) index value. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=36ae3c0a36b7456432fedce38ae2f7bd3e01a563 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3a8b0677fc6180a467e26cc32ce6b0c09a32f9bb http://www.debian.org/security/2017/dsa-3981 http://www.openwall.com/lists/oss-security/2017/09/15/4 http://www.securityfocus.com/bid/101022 https://access.redhat.com/errata/RHSA-2018:0676 https://access.redhat.com/errata/RHSA-2018:1062 https://access.redhat.com& • CWE-20: Improper Input Validation CWE-617: Reachable Assertion •