CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2021-3679 – kernel: DoS in rb_per_cpu_empty()
https://notcve.org/view.php?id=CVE-2021-3679
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service. Se encontró una falta de recursos de CPU en la funcionalidad tracing module del kernel de Linux en versiones anteriores a 5.14-rc3 en la manera en que el usuario usa el búfer de anillo de rastreo de una manera específica. Sólo usuarios locales privilegiados (con capacidad CAP_SYS_ADMIN) podían usar este fallo para privar de recursos causando una denegación de servicio A lack of CPU resources in the Linux kernel tracing module functionality was found in the way users use the trace ring buffer in specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service. • https://bugzilla.redhat.com/show_bug.cgi?id=1989165 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html https://www.debian.org/security/2021/dsa-4978 https://access.redhat.com/security/cve/CVE-2021-3679 • CWE-400: Uncontrolled Resource Consumption CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 8.5EPSS: 0%CPEs: 7EXPL: 0CVE-2021-3682 – QEMU: usbredir: free() call on invalid pointer in bufp_alloc()
https://notcve.org/view.php?id=CVE-2021-3682
A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host. Se ha encontrado un fallo en la emulación del dispositivo redirector USB de QEMU en versiones anteriores a 6.1.0-rc2. Ocurre cuando se abandonan paquetes durante una transferencia masiva desde un cliente SPICE debido a que la queue de paquetes está lleno. • https://bugzilla.redhat.com/show_bug.cgi?id=1989651 https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://security.netapp.com/advisory/ntap-20210902-0006 https://www.debian.org/security/2021/dsa-4980 https://access.redhat.com/security/cve/CVE-2021-3682 • CWE-763: Release of Invalid Pointer or Reference •
CVSS: 7.8EPSS: 0%CPEs: 27EXPL: 0CVE-2021-3612 – kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP()
https://notcve.org/view.php?id=CVE-2021-3612
An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se ha encontrado un fallo de escritura en memoria fuera de límites en el kernel de Linux joystick devices subsystem en versiones anteriores a 5.9-rc1, en la manera en que el usuario llama a la ioctl JSIOCSBTNMAP. Este fallo permite a un usuario local bloquear el sistema o posiblemente escalar sus privilegios en el sistema. • https://bugzilla.redhat.com/show_bug.cgi?id=1974079 https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YKGI562LFV5MESTMVTCG5RORSBT6NGBN https://lore.kernel.org/linux-input/20210620120030.1513655-1-avlarkin82%40gmail.com https://security.netapp.com/advisory/ntap-20210805-0005 https://www.oracle.com/security-alerts/cpujul2022.html https:& • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 1%CPEs: 5EXPL: 0CVE-2021-3580 – nettle: Remote crash in RSA decryption via manipulated ciphertext
https://notcve.org/view.php?id=CVE-2021-3580
A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service. Se ha encontrado un fallo en la manera en que las funciones de descifrado RSA de Nettle manejan el texto cifrado especialmente diseñado. Un atacante podría usar este fallo para proporcionar un texto cifrado manipulado, conllevando al bloqueo de la aplicación y la denegación de servicio A flaw was found in nettle in the way its RSA decryption functions handle specially crafted ciphertext. This flaw allows an attacker to provide a manipulated ciphertext, leading to an application crash and a denial of service. • https://bugzilla.redhat.com/show_bug.cgi?id=1967983 https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html https://security.gentoo.org/glsa/202401-24 https://security.netapp.com/advisory/ntap-20211104-0006 https://access.redhat.com/security/cve/CVE-2021-3580 • CWE-20: Improper Input Validation •
CVSS: 3.8EPSS: 0%CPEs: 6EXPL: 0CVE-2021-3593 – QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6)
https://notcve.org/view.php?id=CVE-2021-3593
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0. • https://bugzilla.redhat.com/show_bug.cgi?id=1970487 https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI https://security.gentoo.org/glsa/202107-44 https://security.netapp.com/advisory/ntap& • CWE-824: Access of Uninitialized Pointer •