CVSS: 7.0EPSS: 0%CPEs: 30EXPL: 1CVE-2021-23133 – Linux Kernel sctp_destroy_sock race condition
https://notcve.org/view.php?id=CVE-2021-23133
A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket. Una condición de carrera en los sockets SCTP del kernel de Linux (el archivo net/sctp/socket.c) versiones anteriores a 5.12-rc8, puede conllevar a una escalada de privilegios del kernel desde el contexto de un servicio de red o un proceso no privilegiado. Si la función sctp_destroy_sock es llamado sin sock_net (sk) -) sctp.addr_wq_lock, un elemento es eliminado de la lista auto_asconf_splist sin ningún bloqueo apropiado. • http://www.openwall.com/lists/oss-security/2021/05/10/1 http://www.openwall.com/lists/oss-security/2021/05/10/2 http://www.openwall.com/lists/oss-security/2021/05/10/3 http://www.openwall.com/lists/oss-security/2021/05/10/4 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b166a20b07382b8bc1dcee2a448715c9c2c81b5b https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg000 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.1EPSS: 0%CPEs: 24EXPL: 0CVE-2021-3506
https://notcve.org/view.php?id=CVE-2021-3506
An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. Se encontró un fallo de acceso a la memoria fuera de límites (OOB) en el archivo fs/f2fs/node.c en el módulo f2fs en el kernel de Linux en versiones anteriores a 5.12.0-rc4. Un fallo en la comprobación de límites permite a un atacante local conseguir acceso a la memoria fuera de límites, conllevando a un bloqueo del sistema o una fuga de información interna del kernel. • http://www.openwall.com/lists/oss-security/2021/05/08/1 https://bugzilla.redhat.com/show_bug.cgi?id=1944298 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://security.netapp.com/advisory/ntap-20210611-0007 https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg2520013.html https://www.openwall.com/lists/oss-security/2021/03/28/2 • CWE-125: Out-of-bounds Read •
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 •