CVSS: 5.5EPSS: 0%CPEs: 24EXPL: 1CVE-2020-27618 – glibc: iconv when processing invalid multi-byte input sequences fails to advance the input state, which could result in an infinite loop
https://notcve.org/view.php?id=CVE-2020-27618
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228. La función iconv en la biblioteca GNU C (también se conoce como glibc o libc6) versiones 2.32 y anteriores, cuando se procesa secuencias de entrada de múltiples bytes no validas en codificaciones IBM1364, IBM1371, IBM1388, IBM1390 e IBM1399, presenta un fallo al avanzar el estado de la entrada, lo que podría conllevar a un bucle infinito en las aplicaciones, resultando en una denegación de servicio, una vulnerabilidad diferente de CVE-2016-10228 A flaw was found in glibc. If an attacker provides the iconv function with invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, IBM1399 encodings, it fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service. • https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html https://security.gentoo.org/glsa/202107-07 https://security.netapp.com/advisory/ntap-20210401-0006 https://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21 https://sourceware.org/bugzilla/show_bug.cgi?id=26224 https://www.oracle.com/security-alerts/cpuapr2022.html https://www.oracle.com/security-alerts/cpujan2022.html https://access.redhat.com/security/cve/CVE-2020-27618 https://bugzilla.redhat.com/show_bug.cgi? • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 4.5EPSS: 0%CPEs: 38EXPL: 0CVE-2020-35508 – kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
https://notcve.org/view.php?id=CVE-2020-35508
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process. Se ha encontrado una posibilidad de fallo de condición de carrera y de inicialización incorrecta del id del proceso en el manejo del id del proceso child/parent del kernel de Linux mientras se filtran los manejadores de señales. Un atacante local es capaz de abusar de este fallo para omitir unas comprobaciones y enviar cualquier señal a un proceso privilegiado. A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. • https://bugzilla.redhat.com/show_bug.cgi?id=1902724 https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948 https://security.netapp.com/advisory/ntap-20210513-0006 https://access.redhat.com/security/cve/CVE-2020-35508 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-665: Improper Initialization •
CVSS: 7.8EPSS: 0%CPEs: 28EXPL: 2CVE-2020-27815
https://notcve.org/view.php?id=CVE-2020-27815
A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo en el código del sistema de archivos JFS en el Kernel de Linux que permite que un atacante local con la capacidad de establecer atributos extendidos para poner en pánico al sistema, causando corrupción de memoria o una escalada de privilegios. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema • http://www.openwall.com/lists/oss-security/2020/11/30/5 http://www.openwall.com/lists/oss-security/2020/12/28/1 https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.netapp.com/advisory/ntap-20210702-0004 https: • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-26932
https://notcve.org/view.php?id=CVE-2021-26932
An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the success or failure of each operation. Unfortunately, when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively implying their success from the success of related batch elements. In other cases, errors resulting from one batch element lead to further batch elements not being inspected, and hence successful ones to not be possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are vulnerable. • http://xenbits.xen.org/xsa/advisory-361.html https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ebee0eab08594b2bd5db716288a4f1ae5936e9bc https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWQWPWYZRX •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 1CVE-2021-26708 – kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c
https://notcve.org/view.php?id=CVE-2021-26708
A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support. Se detectó una escalada de privilegios local en el kernel de Linux versiones anteriores a 5.10.13. Múltiples condiciones de carrera en la implementación de AF_VSOCK son causadas mediante un bloqueo incorrecto en el archivo net/vmw_vsock / af_vsock.c. • https://github.com/azpema/CVE-2021-26708 http://www.openwall.com/lists/oss-security/2021/02/05/6 http://www.openwall.com/lists/oss-security/2021/04/09/2 http://www.openwall.com/lists/oss-security/2022/01/25/14 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 https://security.netapp.com/advisory/ntap-20210312-0008 https://www.openwall • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-667: Improper Locking •