CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2024-0562 – Kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c
https://notcve.org/view.php?id=CVE-2024-0562
A use-after-free flaw was found in the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback. Se encontró un fallo de use after free en el kernel de Linux. Cuando se elimina un disco, se llama a bdi_unregister para detener la reescritura adicional y espera a que se complete el trabajo retrasado asociado. • https://access.redhat.com/errata/RHSA-2024:0412 https://access.redhat.com/security/cve/CVE-2024-0562 https://bugzilla.redhat.com/show_bug.cgi?id=2258475 https://patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1-khazhy@google.com • CWE-416: Use After Free •
CVSS: 6.8EPSS: 0%CPEs: 4EXPL: 0CVE-2023-4001 – Grub2: bypass the grub password protection feature
https://notcve.org/view.php?id=CVE-2023-4001
An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package. Se encontró un fallo de omisión de autenticación en GRUB debido a la forma en que GRUB usa el UUID de un dispositivo para buscar el archivo de configuración que contiene el hash de contraseña para la función de protección de contraseña de GRUB. Un atacante capaz de conectar una unidad externa, como una memoria USB que contenga un sistema de archivos con un UUID duplicado (el mismo que en el sistema de archivos "/boot/") puede omitir la función de protección con contraseña GRUB en los sistemas UEFI, que enumeran unidades extraíbles. antes que los no removibles. • http://www.openwall.com/lists/oss-security/2024/01/15/3 https://access.redhat.com/errata/RHSA-2024:0437 https://access.redhat.com/errata/RHSA-2024:0456 https://access.redhat.com/errata/RHSA-2024:0468 https://access.redhat.com/security/cve/CVE-2023-4001 https://bugzilla.redhat.com/show_bug.cgi?id=2224951 https://dfir.ru/2024/01/15/cve-2023-4001-a-vulnerability-in-the-downstream-grub-boot-manager https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject& • CWE-290: Authentication Bypass by Spoofing •
CVSS: 6.2EPSS: 0%CPEs: 5EXPL: 0CVE-2023-6915 – Kernel: null pointer dereference vulnerability in ida_free in lib/idr.c
https://notcve.org/view.php?id=CVE-2023-6915
A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return. Se encontró un problema de desreferencia de puntero null en ida_free en lib/idr.c en el kernel de Linux. Este problema puede permitir que un atacante que utilice esta librería cause un problema de denegación de servicio debido a una verificación faltante en el retorno de una función. • https://access.redhat.com/errata/RHSA-2024:2394 https://access.redhat.com/errata/RHSA-2024:2950 https://access.redhat.com/errata/RHSA-2024:3138 https://access.redhat.com/security/cve/CVE-2023-6915 https://bugzilla.redhat.com/show_bug.cgi?id=2254982 https://github.com/torvalds/linux/commit/af73483f4e8b6f5c68c9aa63257bdd929a9c194a https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-6683 – Qemu: vnc: null pointer dereference in qemu_clipboard_request()
https://notcve.org/view.php?id=CVE-2023-6683
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service. Se encontró una falla en el servidor QEMU built-in VNC al procesar mensajes ClientCutText. Se puede acceder a la función qemu_clipboard_request() antes de que se llamara a vnc_server_cut_text_caps() y tuviera la oportunidad de inicializar el par del portapapeles, lo que lleva a una desreferencia del puntero NULL. • https://access.redhat.com/errata/RHSA-2024:2135 https://access.redhat.com/errata/RHSA-2024:2962 https://access.redhat.com/security/cve/CVE-2023-6683 https://bugzilla.redhat.com/show_bug.cgi?id=2254825 https://security.netapp.com/advisory/ntap-20240223-0001 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 1CVE-2024-23301 – rear: creates a world-readable initrd
https://notcve.org/view.php?id=CVE-2024-23301
Relax-and-Recover (aka ReaR) through 2.7 creates a world-readable initrd when using GRUB_RESCUE=y. This allows local attackers to gain access to system secrets otherwise only readable by root. Relax-and-Recover (a.k.a ReaR) hasta 2.7 crea un initrd world-readable cuando se usa GRUB_RESCUE=y. Esto permite a los atacantes locales obtener acceso a secretos del sistema que de otro modo sólo serían legibles por root. A vulnerability has been identified in Relax-and-Recover (ReaR), where the use of GRUB_RESCUE=y results in the creation of an initrd that is readable by anyone. • https://github.com/rear/rear/issues/3122 https://github.com/rear/rear/pull/3123 https://lists.debian.org/debian-lts-announce/2024/02/msg00003.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JIN57LUPBI2GDJOK3PYXNHJTZT3AQTZ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHKMPXJNXEJJE6EVYE5HM7EKEJFQMBN7 https://access.redhat.com/security/cve/CVE-2024-23301 https://bugzilla.redhat.com/show_bug.cgi?id=2258396 • CWE-359: Exposure of Private Personal Information to an Unauthorized Actor •