CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0CVE-2022-2196 – Speculative execution attacks in KVM VMX
https://notcve.org/view.php?id=CVE-2022-2196
A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a A flaw was found in the KVM's Intel nested virtualization feature (nVMX). Since L1 and L2 shared branch prediction modes (guest-user and guest-kernel), KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 https://kernel.dance/#2e7eab81425a https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html https://access.redhat.com/security/cve/CVE-2022-2196 https://bugzilla.redhat.com/show_bug.cgi?id=2160023 • CWE-1188: Initialization of a Resource with an Insecure Default •
CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 1CVE-2022-3628 – kernel: USB-accessible buffer overflow in brcmfmac
https://notcve.org/view.php?id=CVE-2022-3628
A buffer overflow flaw was found in the Linux kernel Broadcom Full MAC Wi-Fi driver. This issue occurs when a user connects to a malicious USB device. This can allow a local user to crash the system or escalate their privileges. Se encontró una falla de desbordamiento del búfer en el controlador Wi-Fi Broadcom Full MAC del kernel de Linux. Este problema ocurre cuando un usuario se conecta a un dispositivo USB malicioso. • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c?id=6788ba8aed4e28e90f72d68a9d794e34eac17295 https://access.redhat.com/security/cve/CVE-2022-3628 https://bugzilla.redhat.com/show_bug.cgi?id=2150960 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 1CVE-2022-45869 – kernel: KVM: x86/mmu: race condition in direct_page_fault()
https://notcve.org/view.php?id=CVE-2022-45869
A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the TDP MMU are enabled. Una condición de carrera en el subsistema KVM x86 en el kernel de Linux hasta 6.1-rc6 permite a los usuarios del sistema operativo invitado provocar una denegación de servicio (caída del sistema operativo anfitrión o corrupción de la memoria del sistema operativo anfitrión) cuando la virtualización anidada y la MMU TDP están habilitadas. A flaw was found in the Linux kernel in the KVM. A race condition in direct_page_fault allows guest OS users to cause a denial of service (host OS crash or host OS memory corruption) when nested virtualization and the TDP MMU are enabled. • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=47b0c2e4c220f2251fd8dcfbb44479819c715e15 https://access.redhat.com/security/cve/CVE-2022-45869 https://bugzilla.redhat.com/show_bug.cgi?id=2151317 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.0EPSS: 0%CPEs: 17EXPL: 0CVE-2022-45919 – kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c
https://notcve.org/view.php?id=CVE-2022-45919
An issue was discovered in the Linux kernel through 6.0.10. In drivers/media/dvb-core/dvb_ca_en50221.c, a use-after-free can occur is there is a disconnect after an open, because of the lack of a wait_event. Se descubrió un problema en el kernel de Linux hasta la versión 6.0.10. En drivers/media/dvb-core/dvb_ca_en50221.c, puede ocurrir un use-after-free si hay una desconexión después de una apertura, debido a la falta de un wait_event. A race condition flaw leading to a use-after-free issue was found in the Linux kernel media subsystem in the DVB CA EN50221 interface of the DVB core device driver. • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=280a8ab81733da8bc442253c700a52c4c0886ffd https://lore.kernel.org/linux-media/20221121063308.GA33821%40ubuntu/T/#u https://security.netapp.com/advisory/ntap-20230113-0008 https://access.redhat.com/security/cve/CVE-2022-45919 https://bugzilla.redhat.com/show_bug.cgi?id=2151956 • CWE-416: Use After Free •
CVSS: 7.0EPSS: 0%CPEs: 16EXPL: 0CVE-2022-45886 – kernel: use-after-free due to race condition occurring in dvb_net.c
https://notcve.org/view.php?id=CVE-2022-45886
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvb_net.c has a .disconnect versus dvb_device_open race condition that leads to a use-after-free. Se descubrió un problema en el kernel de Linux hasta la versión 6.0.9. drivers/media/dvb-core/dvb_net.c tiene una condición de carrera .disconnect versus dvb_device_open que conduce a un use-after-free. A race condition flaw leading to a use-after-free issue was found in the Linux kernel media subsystem in the dvb_net component of the DVB core device driver. It could occur between the time the device is disconnected (.disconnect function) and the time the device node is opened (dvb_device_open function). A local user could use this flaw to crash the system or potentially escalate their privileges on the system. • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4172385b0c9ac366dcab78eda48c26814b87ed1a https://lore.kernel.org/linux-media/20221115131822.6640-1-imv4bel%40gmail.com https://lore.kernel.org/linux-media/20221115131822.6640-3-imv4bel%40gmail.com https://security.netapp.com/advisory/ntap-20230113-0006 https://access.redhat.com/security/cve/CVE-2022-45886 https://bugzilla.redhat.com/show_bug.cgi?id=2148517 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •