CVSS: 6.1EPSS: 0%CPEs: 17EXPL: 1CVE-2018-18397 – kernel: userfaultfd bypasses tmpfs file permissions
https://notcve.org/view.php?id=CVE-2018-18397
12 Dec 2018 — The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c. La implementación de userfaultfd en el kernel de Linux en versiones anteriores a la 4.17 gestiona de manera incorrecta para ciertas llamadas ioctl UFFDIO_, tal y como queda demos... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1 • CWE-20: Improper Input Validation CWE-863: Incorrect Authorization •
CVSS: 7.8EPSS: 0%CPEs: 16EXPL: 0CVE-2018-9568 – kernel: Memory corruption due to incorrect socket cloning
https://notcve.org/view.php?id=CVE-2018-9568
06 Dec 2018 — In sk_clone_lock of sock.c, there is a possible memory corruption due to type confusion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. • https://access.redhat.com/errata/RHSA-2019:0512 • CWE-122: Heap-based Buffer Overflow CWE-704: Incorrect Type Conversion or Cast •
CVSS: 4.7EPSS: 0%CPEs: 5EXPL: 0CVE-2018-19854 – kernel: Information Disclosure in crypto_report_one in crypto/crypto_user.c
https://notcve.org/view.php?id=CVE-2018-19854
04 Dec 2018 — An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option). Se ha descubierto un problema en el kern... • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0CVE-2018-19824 – kernel: Use-after-free in sound/usb/card.c:usb_audio_probe()
https://notcve.org/view.php?id=CVE-2018-19824
03 Dec 2018 — In the Linux kernel through 4.19.6, a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c. En el kernel de Linux hasta la versión 4.19.6, un usuario local podría explotar memoria previamente liberada en el controlador ALSA suministrando un dispositivo de sonido USB malicioso (con cero interfaces) que no se maneja correctamente en usb_audio_probe en sound/usb/card.c. A flaw was ... • http://www.securityfocus.com/bid/106109 • CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2018-16862
https://notcve.org/view.php?id=CVE-2018-16862
26 Nov 2018 — A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one. Se ha detectado un fallo de seguridad en el kernel de Linux de manera que el subsistema "cleancache" borre un inode después del truncado de archivos final (eliminación). El nuevo archivo creado con el mismo inode podría contener páginas r... • http://www.securityfocus.com/bid/106009 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 15EXPL: 0CVE-2018-14646 – kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service
https://notcve.org/view.php?id=CVE-2018-14646
26 Nov 2018 — The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service. El kernel de Linux en versiones anteriores a la 4.15-rc8 era vulnerable a un error de desreferencia de puntero NULL en la función __netlink_ns_capable() en el archivo net/netlink/af_netlink.c. Un atacante loc... • https://access.redhat.com/errata/RHSA-2018:3651 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2018-19407
https://notcve.org/view.php?id=CVE-2018-19407
21 Nov 2018 — The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized. La función vcpu_scan_ioapic en arch/x86/kvm/x86.c en el kernel de Linux hasta la versión 4.19.2 permite que usuarios locales provoquen una denegación de servicio (desreferencia de puntero NULLy error) mediante llamadas del sistema manipuladas que alcanzan una sit... • http://www.securityfocus.com/bid/105987 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2018-19406
https://notcve.org/view.php?id=CVE-2018-19406
21 Nov 2018 — kvm_pv_send_ipi in arch/x86/kvm/lapic.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where the apic map is uninitialized. kvm_pv_send_ipi en arch/x86/kvm/lapic.c en el kernel de Linux hasta la versión 4.19.2 permite que usuarios locales provoquen una denegación de servicio (desreferencia de puntero NULL) mediante llamadas del sistema manipuladas que alcanzan una situación donde el mapa ap... • http://www.securityfocus.com/bid/105988 • CWE-476: NULL Pointer Dereference •
CVSS: 7.0EPSS: 0%CPEs: 4EXPL: 7CVE-2018-18955 – Linux - Nested User Namespace idmap Limit Local Privilege Escalation
https://notcve.org/view.php?id=CVE-2018-18955
16 Nov 2018 — In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced directi... • https://www.exploit-db.com/exploits/45915 • CWE-863: Incorrect Authorization •
CVSS: 7.8EPSS: 0%CPEs: 10EXPL: 1CVE-2018-18281 – kernel: TLB flush happens too late on mremap
https://notcve.org/view.php?id=CVE-2018-18281
29 Oct 2018 — Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19. Desde la versión 3.2 del kernel de Linux, la syscall mremap(... • http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html • CWE-459: Incomplete Cleanup CWE-672: Operation on a Resource after Expiration or Release •