CVSS: 7.1EPSS: 0%CPEs: 18EXPL: 1CVE-2021-3739
https://notcve.org/view.php?id=CVE-2021-3739
A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo de desreferencia de puntero NULL en la función btrfs_rm_device en el archivo fs/btrfs/volumes.c en el Kernel de Linux, donde el desencadenamiento del bug requiere "CAP_SYS_ADMIN". Este fallo permite a un atacante local bloquear el sistema o filtrar información interna del kernel. • https://bugzilla.redhat.com/show_bug.cgi?id=1997958 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091 https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091 https://security.netapp.com/advisory/ntap-20220407-0006 https://ubuntu.com/security/CVE-2021-3739 https://www.openwall.com/lists/oss-security/2021/08/25/3 • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 24EXPL: 1CVE-2021-38300
https://notcve.org/view.php?id=CVE-2021-38300
arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture. arch/mips/net/bpf_jit.c en el kernel de Linux anterior a la versión 5.4.10 puede generar código máquina no deseado al transformar programas cBPF sin privilegios, permitiendo la ejecución de código arbitrario dentro del contexto del kernel. Esto ocurre porque las ramas condicionales pueden superar el límite de 128 KB de la arquitectura MIPS • http://www.openwall.com/lists/oss-security/2021/09/15/5 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37cb28ec7d3a36a5bace7063a3dba633ab110f8b https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html https://security.netapp.com/advisory/ntap-20211008-0003 https://www.debian.org/security/2022/dsa-5096 •
CVSS: 7.8EPSS: 0%CPEs: 25EXPL: 0CVE-2021-41073
https://notcve.org/view.php?id=CVE-2021-41073
loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation. La función loop_rw_iter en fs/io_uring.c en el kernel de Linux desde la versión 5.10 hasta la versión 5.14.6 permite a los usuarios locales ganar privilegios mediante el uso de IORING_OP_PROVIDE_BUFFERS para desencadenar una liberación de un búfer del kernel, como se ha demostrado utilizando /proc//maps para su explotación • http://www.openwall.com/lists/oss-security/2021/09/18/2 http://www.openwall.com/lists/oss-security/2022/06/04/4 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J7KSMIOQ4377CVTHMWNGNCWHMCRFRP2T https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAP4TXEZ7J4EZQMQW5SIJMWXG7WZT3F7 https://security.netapp.com/advisory/nta • CWE-763: Release of Invalid Pointer or Reference •
CVSS: 7.0EPSS: 0%CPEs: 31EXPL: 0CVE-2021-40490
https://notcve.org/view.php?id=CVE-2021-40490
A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. Se ha detectado una condición de carrera en la función ext4_write_inline_data_end en el archivo fs/ext4/inline.c en el subsistema ext4 en el kernel de Linux versiones hasta 5.13.13 • https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=9e445093e523f3277081314c864f708fd4bd34aa 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/M6VS2DLGT7TK7URKAS2KWJL3S533SGVA https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XJGX3DMJT6MRBW2XEF3TWVHYWZW3DG3N https://security.netapp.com/adv • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
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 •