CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2022-0264
https://notcve.org/view.php?id=CVE-2022-0264
A vulnerability was found in the Linux kernel's eBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel. This flaws affects kernel versions < v5.16-rc6 Se encontró una vulnerabilidad en el verificador eBPF del kernel de Linux cuando son manejados estructuras de datos internas. Las ubicaciones de memoria interna podían ser devueltas al espacio de usuario. • https://bugzilla.redhat.com/show_bug.cgi?id=2041547 • CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 7.4EPSS: 0%CPEs: 35EXPL: 0CVE-2021-20322 – kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies
https://notcve.org/view.php?id=CVE-2021-20322
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. Se encontró un fallo en el procesamiento de los errores ICMP recibidos (fragmento ICMP necesario y redireccionamiento ICMP) en la funcionalidad del kernel de Linux que permite la capacidad de escanear rápidamente los puertos UDP abiertos. Este fallo permite a un usuario remoto fuera de la ruta de acceso omitir efectivamente la aleatorización del puerto de origen UDP. • https://bugzilla.redhat.com/show_bug.cgi?id=2014230 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=4785305c05b25a242e5314cc821f54ade4c18810 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=6457378fe796815c973f631a1904e147d6ee33b1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/ipv4/route.c?h=v5.15-rc6&id=67d6d681e15b578c1725bad8ad079e05d1c48a8e https://git.kernel.org/pub/scm/linux/ke • CWE-330: Use of Insufficiently Random Values •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4093 – kernel: KVM: SVM: out-of-bounds read/write in sev_es_string_io
https://notcve.org/view.php?id=CVE-2021-4093
A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario. Se ha encontrado un fallo en el código de AMD de KVM para soportar la Virtualización Segura Encriptada-Estado Encriptado (SEV-ES). Un huésped de KVM que use SEV-ES puede desencadenar lecturas y escrituras fuera de límites en el núcleo anfitrión por medio de un VMGEXIT malicioso para una instrucción de E/S de cadena (por ejemplo, outs o ins) usando el motivo de salida SVM_EXIT_IOIO. • https://bugs.chromium.org/p/project-zero/issues/detail?id=2222 https://bugzilla.redhat.com/show_bug.cgi?id=2028584 https://access.redhat.com/security/cve/CVE-2021-4093 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 7.0EPSS: 0%CPEs: 7EXPL: 3CVE-2021-4202
https://notcve.org/view.php?id=CVE-2021-4202
A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem while the device is getting removed, leading to a privilege escalation problem. Se encontró un fallo de uso de memoria previamente liberada en la función nci_request en el archivo net/nfc/nci/core.c en NFC Controller Interface (NCI) en el kernel de Linux. este fallo podría permitir a un atacante local con privilegios de usuario causar un problema de carrera de datos mientras es retirado el dispositivo, conllevando a un problema de escalada de privilegios • http://www.openwall.com/lists/oss-security/2022/06/01/2 http://www.openwall.com/lists/oss-security/2022/06/04/2 http://www.openwall.com/lists/oss-security/2022/06/07/2 https://bugzilla.redhat.com/show_bug.cgi?id=2036682 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=48b71a9e66c2eab60564b1b1c85f4928ed04e406 https://git.kernel.org/pub • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •
CVSS: 7.9EPSS: 0%CPEs: 36EXPL: 1CVE-2021-3752 – kernel: possible use-after-free in bluetooth module
https://notcve.org/view.php?id=CVE-2021-3752
A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se ha encontrado un fallo de uso de memoria previamente liberada en el subsistema Bluetooth del kernel de Linux en la forma en que las llamadas de usuario son conectadas al socket y son desconectadas simultáneamente debido a una condición de carrera. Este fallo permite a un usuario bloquear el sistema o escalar sus privilegios. • https://bugzilla.redhat.com/show_bug.cgi?id=1999544 https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org https://security.netapp.com/advisory/ntap-20220318-0009 https://www.debian.org/security/2022/dsa-5096 https://www.openwall.com/lists/oss-security/2021/09/15/4 https://www.oracle.com/security-alerts/cpujul2022.html https:/ • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •