CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-26932
https://notcve.org/view.php?id=CVE-2021-26932
17 Feb 2021 — 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, eff... • http://xenbits.xen.org/xsa/advisory-361.html •
CVSS: 7.0EPSS: 0%CPEs: 2EXPL: 0CVE-2021-3348 – kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c
https://notcve.org/view.php?id=CVE-2021-3348
01 Feb 2021 — nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71. En la función nbd_add_socket en el archivo drivers/block/nbd.c en el kernel de Linux versiones hasta 5.10.12, presenta un uso de la memoria previamente liberada de ndb_queue_rq que podría ser desencadenado por atacantes locales (con acceso al disp... • http://www.openwall.com/lists/oss-security/2021/02/01/1 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 2CVE-2021-3347 – kernel: Use after free via PI futex state
https://notcve.org/view.php?id=CVE-2021-3347
29 Jan 2021 — An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458. Se detectó un problema en el kernel de Linux versiones hasta 5.10.11. Los futexes de PI presentan un uso de la memoria previamente liberada de la pila del kernel durante el manejo de fallos, permitiendo a usuarios locales ejecutar código en el kernel, también se conoce como CID-34b1a1ce1458 A flaw was ... • https://github.com/nanopathi/linux-4.19.72_CVE-2021-3347 • CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 26EXPL: 2CVE-2020-25669
https://notcve.org/view.php?id=CVE-2020-25669
28 Jan 2021 — A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free. Se encontró una vulnerabilidad en el Kernel de Linux donde la función sunkbd_reinit habiendo sido programada por la función sunkbd_interrupt antes de que sunkbd fuera liberada. Aunque el puntero colgante está establecido en NULL ... • http://www.openwall.com/lists/oss-security/2020/11/05/2 • CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-3178
https://notcve.org/view.php?id=CVE-2021-3178
19 Jan 2021 — fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior ** EN DISPUTA ** en el archivo fs/nfsd/nfs3xdr.c en el kernel de Linux versiones hasta 5.10.8, cuando se presenta una exportación NFS de un subdirectorio ... • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51b2ee7d006a736a9126e8111d1f24e4fd0afaa6 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 8.1EPSS: 0%CPEs: 5EXPL: 0CVE-2020-28374 – kernel: SCSI target (LIO) write to any block on ILO backstore
https://notcve.org/view.php?id=CVE-2020-28374
13 Jan 2021 — In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore. En el archivo drivers/target/target_core_xcopy.c... • http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html • CWE-20: Improper Input Validation CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 7.0EPSS: 0%CPEs: 31EXPL: 3CVE-2020-25668
https://notcve.org/view.php?id=CVE-2020-25668
06 Jan 2021 — A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op. Se encontró un fallo en el Kernel de Linux porque el acceso a la variable global fg_console no está correctamente sincronizado, conllevando a un uso de la memoria previamente liberada en la función con_font_op • https://github.com/hshivhare67/Kernel_4.1.15_CVE-2020-25668 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-662: Improper Synchronization •
CVSS: 8.8EPSS: 0%CPEs: 12EXPL: 0CVE-2020-36158 – kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value
https://notcve.org/view.php?id=CVE-2020-36158
05 Jan 2021 — mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332. La función mwifiex_cmd_802_11_ad_hoc_start en el archivo drivers/net/wireless/marvell/mwifiex/join.c en el kernel de Linux versiones hasta 5.10.4, podría permitir a atacantes remotos ejecutar código arbitrario por medio de un valor SSID grande, también se conoce como CID-5c455c5ab332 A flaw was fo... • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c455c5ab332773464d02ba17015acdca198f03d • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 8.8EPSS: 0%CPEs: 15EXPL: 0CVE-2020-29569
https://notcve.org/view.php?id=CVE-2020-29569
15 Dec 2020 — An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. • https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html • CWE-416: Use After Free •
CVSS: 7.2EPSS: 0%CPEs: 11EXPL: 2CVE-2020-27777 – kernel: powerpc: RTAS calls can be used to compromise kernel integrity
https://notcve.org/view.php?id=CVE-2020-27777
15 Dec 2020 — A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel. Se encontró un fallo en la manera en que RTAS manejaba los accesos a la memoria en el espacio de usuario para la comunicación del kernel. En un sistema invitado bloqueado (generalm... • https://bugzilla.redhat.com/show_bug.cgi?id=1900844 • CWE-862: Missing Authorization •