CVSS: 5.6EPSS: 0%CPEs: 7EXPL: 0CVE-2018-15594 – kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests
https://notcve.org/view.php?id=CVE-2018-15594
arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests. arch/x86/kernel/paravirt.c en el kernel de Linux en versiones anteriores a la 4.18.1 maneja incorrectamente algunas llamadas indirectas, lo que hace que sea más fácil para los atacantes realizar ataques Spectre-v2 contra guests paravirtuales. It was found that paravirt_patch_call/jump() functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5800dc5c19f34e6e03b5adab1282535cb102fafd http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html http://www.securityfocus.com/bid/105120 http://www.securitytracker.com/id/1041601 https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab12825 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.5EPSS: 0%CPEs: 7EXPL: 0CVE-2018-15572
https://notcve.org/view.php?id=CVE-2018-15572
The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks. La función spectre_v2_select_mitigation en arch/x86/kernel/cpu/bugs.c en el kernel de Linux en versiones anteriores a la 4.18.1 no siempre completa RSB en un cambio de contexto, lo que hace que sea más fácil para los atacantes realizar ataques spectreRSB espacio de usuario-espacio de usuario. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3775-1 https://usn.ubuntu.com/3775-2 https://usn.ubuntu.com/3776-1 https://usn.ubuntu.com/3776-2 https://usn.ubuntu.com/3777-1 http •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2018-15471
https://notcve.org/view.php?id=CVE-2018-15471
An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks. Se descubrió un problema en xenvif_set_hash_mapping en drivers/net/xen-netback/hash.c en el kernel de Linux hasta la versión 4.18.1, tal y como se utiliza en Xen hasta las versiones 4.11.x y otros productos. • http://xenbits.xen.org/xsa/advisory-270.html https://bugs.chromium.org/p/project-zero/issues/detail?id=1607 https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html https://usn.ubuntu.com/3819-1 https://usn.ubuntu.com/3820-1 https://usn.ubuntu.com/3820-2 https://usn.ubuntu.com/3820-3 https://www.debian.org/security/2018/dsa-4313 • CWE-125: Out-of-bounds Read •
CVSS: 7.8EPSS: 1%CPEs: 152EXPL: 0CVE-2018-5391 – The Linux kernel, versions 3.9+, IP implementation is vulnerable to denial of service conditions with low rates of specially modified packets
https://notcve.org/view.php?id=CVE-2018-5391
The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size. El kernel de Linux en versiones a partir de la 3.9 es vulnerable a un ataque de denegación de servicio (DoS) con tasas bajas de paquetes especialmente modificados que apuntan hacia el reensamblado de fragmentos de IP. • http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-004.txt http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-linux-en http://www.openwall.com/lists/oss-security/2019/06/28/2 http://www.openwall.com/lists/oss-security/2019/07/06/3 http://www.openwall.com/lists/oss-security/2019/07/06/4 http://www.securityfocus.com/bid/105108 http://www.securitytracker.com/id/1041476 http://www.securitytracker.com/id/1041637 https://access.redhat.co • CWE-20: Improper Input Validation CWE-400: Uncontrolled Resource Consumption •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2018-7754
https://notcve.org/view.php?id=CVE-2018-7754
The aoedisk_debugfs_show function in drivers/block/aoe/aoeblk.c in the Linux kernel through 4.16.4rc4 allows local users to obtain sensitive address information by reading "ffree: " lines in a debugfs file. La función aoedisk_debugfs_show en drivers/block/aoe/aoeblk.c en el kernel de Linux hasta la versión 4.16.4rc4 permite que usuarios locales obtengan información sensible de direcciones mediante la lectura de líneas "ffree: " en un archivo debugfs. • https://elixir.bootlin.com/linux/v4.16-rc4/source/drivers/block/aoe/aoeblk.c#L421 https://github.com/johnsonwangqize/cve-linux/blob/master/CVE-2018-7754.md • CWE-532: Insertion of Sensitive Information into Log File •