CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 1CVE-2022-1263 – kernel: KVM: NULL pointer dereference in kvm_dirty_ring_push in virt/kvm/dirty_ring.c
https://notcve.org/view.php?id=CVE-2022-1263
A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service. Se encontró un problema de desreferencia de puntero NULL en KVM cuando es liberada una vCPU con el soporte de anillo sucio habilitado. Este fallo permite a un atacante local no privilegiado en el host emitir llamadas ioctl específicas, causando una condición de oops en el kernel que resulta en una denegación de servicio • https://access.redhat.com/security/cve/CVE-2022-1263 https://bugzilla.redhat.com/show_bug.cgi?id=2072698 https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4 https://www.openwall.com/lists/oss-security/2022/04/07/1 • CWE-476: NULL Pointer Dereference •
CVSS: 7.1EPSS: 0%CPEs: 3EXPL: 0CVE-2022-1651
https://notcve.org/view.php?id=CVE-2022-1651
A memory leak flaw was found in the Linux kernel in acrn_dev_ioctl in the drivers/virt/acrn/hsm.c function in how the ACRN Device Model emulates virtual NICs in VM. This flaw allows a local privileged attacker to leak unauthorized kernel information, causing a denial of service. Se ha encontrado un fallo de pérdida de memoria en el kernel de Linux en la función acrn_dev_ioctl del archivo drivers/virt/acrn/hsm.c en la forma en que el modelo de dispositivo ACRN emula las NIC virtuales en la VM. Este fallo permite a un atacante local privilegiado filtrar información del kernel no autorizada, causando una denegación de servicio. • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ecd1735f14d6ac868ae5d8b7a2bf193fa11f388b https://security.netapp.com/advisory/ntap-20220901-0008 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 7.1EPSS: 0%CPEs: 13EXPL: 0CVE-2022-1671
https://notcve.org/view.php?id=CVE-2022-1671
A NULL pointer dereference flaw was found in rxrpc_preparse_s in net/rxrpc/server_key.c in the Linux kernel. This flaw allows a local attacker to crash the system or leak internal kernel information. Se ha encontrado un fallo de desreferencia de puntero NULL en la función rxrpc_preparse_s en el archivo net/rxrpc/server_key.c en el kernel de Linux. Este fallo permite a un atacante local bloquear el sistema o filtrar información interna del kernel. • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ff8376ade4f668130385839cef586a0990f8ef87 https://security.netapp.com/advisory/ntap-20220901-0004 https://security.netapp.com/advisory/ntap-20220901-0008 • CWE-476: NULL Pointer Dereference •
CVSS: 3.3EPSS: 0%CPEs: 1EXPL: 0CVE-2022-32296
https://notcve.org/view.php?id=CVE-2022-32296
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056. El kernel de Linux anterior a la versión 5.17.9 permite a los servidores TCP identificar a los clientes observando qué puertos de origen se utilizan. Esto ocurre debido al uso del Algoritmo 4 ("Double-Hash Port Selection Algorithm") del RFC 6056 • https://arxiv.org/abs/2209.12993 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5 https://github.com/0xkol/rfc6056-device-tracker https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html https://www.debian.org/security/2022/dsa-5173 • CWE-330: Use of Insufficiently Random Values •
CVSS: 8.8EPSS: 0%CPEs: 22EXPL: 6CVE-2022-32250 – Linux Kernel nf_tables_expr_destroy Use-After-Free Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2022-32250
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. El archivo net/netfilter/nf_tables_api.c en el kernel de Linux versiones hasta 5.18.1, permite a un usuario local (capaz de crear espacios de nombres de usuario/red) escalar privilegios a root porque una comprobación incorrecta de NFT_STATEFUL_EXPR conlleva a un uso de memoria previamente liberada A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the nf_tables_expr_destroy method. • https://github.com/theori-io/CVE-2022-32250-exploit https://github.com/ysanatomic/CVE-2022-32250-LPE https://github.com/Kristal-g/CVE-2022-32250 http://www.openwall.com/lists/oss-security/2022/06/03/1 http://www.openwall.com/lists/oss-security/2022/06/04/1 http://www.openwall.com/lists/oss-security/2022/06/20/1 http://www.openwall.com/lists/oss-security/2022/07/03/5 http://www.openwall.com/lists/oss-security/2022/07/03/6 http://www.openwall&# • CWE-416: Use After Free •