CVSS: 7.1EPSS: 0%CPEs: 22EXPL: 0CVE-2022-26365
https://notcve.org/view.php?id=CVE-2022-26365
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742). Unas fuga de datos de frontends de disco/NIC de Linux Este registro de información de CNA se relaciona con múltiples CVE; el texto explica qué aspectos/vulnerabilidades corresponden a qué CVE.] Las interfaces de dispositivos Linux Block y Network PV no ponen a cero las regiones de memoria antes de compartirlas con el backend (CVE-2022-26365, CVE-2022-33740). • http://www.openwall.com/lists/oss-security/2022/07/05/6 http://xenbits.xen.org/xsa/advisory-403.html https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q https://www.debian.org/security/2022/dsa-5191 https://xenbits.xenproject.org/xsa/advisory-403&# • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 4.7EPSS: 0%CPEs: 3EXPL: 0CVE-2022-33744
https://notcve.org/view.php?id=CVE-2022-33744
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages. Los invitados Arm pueden causar DoS Dom0 por medio de dispositivos PV Al mapear páginas de invitados en Arm, dom0 está utilizando un rbtree para llevar a cabo un seguimiento de las asignaciones externas. La actualización de ese rbtree no siempre es realizado completamente con el bloqueo relacionado, resultando en una pequeña ventana de carrera, que invitados no privilegiados pueden usar por medio de dispositivos PV para causar inconsistencias en el rbtree. • http://www.openwall.com/lists/oss-security/2022/07/05/4 http://xenbits.xen.org/xsa/advisory-406.html https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html https://www.debian.org/security/2022/dsa-5191 https://xenbits.xenproject.org/xsa/advisory-406.txt •
CVSS: 7.8EPSS: 0%CPEs: 22EXPL: 9CVE-2022-34918 – kernel: heap overflow in nft_set_elem_init()
https://notcve.org/view.php?id=CVE-2022-34918
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c. Se ha detectado un problema en el kernel de Linux versiones hasta 5.18.9. • https://github.com/veritas501/CVE-2022-34918 https://github.com/randorisec/CVE-2022-34918-LPE-PoC https://github.com/merlinepedra25/CVE-2022-34918-LPE-PoC https://github.com/merlinepedra/CVE-2022-34918-LPE-PoC https://github.com/linulinu/CVE-2022-34918 http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Overflow-Privilege-Escalation.html http://www.openwall.com/lists/oss-secur • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') CWE-1025: Comparison Using Wrong Factors •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 1CVE-2022-2078 – kernel: buffer overflow in nft_set_desc_concat_parse()
https://notcve.org/view.php?id=CVE-2022-2078
A vulnerability was found in the Linux kernel's nft_set_desc_concat_parse() function .This flaw allows an attacker to trigger a buffer overflow via nft_set_desc_concat_parse() , causing a denial of service and possibly to run code. Se ha encontrado una vulnerabilidad en la función nft_set_desc_concat_parse() del kernel de Linux. Este fallo permite a un atacante desencadenar un desbordamiento de búfer por medio de la función nft_set_desc_concat_parse() , causando una denegación de servicio y posiblemente una ejecución de código • https://github.com/delsploit/CVE-2022-2078 https://bugzilla.redhat.com/show_bug.cgi?id=2096178 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/nf_tables_api.c?id=fecf31ee395b0295f2d7260aa29946b7605f7c85 https://www.debian.org/security/2022/dsa-5161 https://access.redhat.com/security/cve/CVE-2022-2078 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-121: Stack-based Buffer Overflow •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2022-1852 – kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS
https://notcve.org/view.php?id=CVE-2022-1852
A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU. Se ha encontrado un fallo de desreferencia de puntero NULL en el módulo KVM del kernel de Linux, que puede conllevar a una denegación de servicio en el archivo x86_emulate_insn en arch/x86/kvm/emulate.c. Este fallo es producido mientras es ejecutada una instrucción ilegal en el huésped en la CPU Intel • https://bugzilla.redhat.com/show_bug.cgi?id=2089815 https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9 https://access.redhat.com/security/cve/CVE-2022-1852 • CWE-476: NULL Pointer Dereference •