CVSS: 7.0EPSS: 0%CPEs: 8EXPL: 0CVE-2020-25212 – kernel: TOCTOU mismatch in the NFS client code
https://notcve.org/view.php?id=CVE-2020-25212
09 Sep 2020 — A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452. Una discrepancia de TOCTOU en el código del cliente NFS en el kernel de Linux versiones anteriores a 5.8.3, podría ser usada por atacantes locales para dañar la memoria o posiblemente tener otro impacto no especificado porque una comprobación de tam... • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition CWE-787: Out-of-bounds Write •
CVSS: 6.7EPSS: 0%CPEs: 5EXPL: 1CVE-2020-25211 – kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c
https://notcve.org/view.php?id=CVE-2020-25211
09 Sep 2020 — In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff. En el kernel de Linux versiones hasta 5.8.7, los atacantes locales capaces de inyectar la configuración netlink de conntrack podrían desbordar un búfer local, causando bloqueos o desencadenando el uso de números de protocolo... • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.8EPSS: 0%CPEs: 11EXPL: 1CVE-2020-14386 – kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege
https://notcve.org/view.php?id=CVE-2020-14386
08 Sep 2020 — A flaw was found in the Linux kernel before 5.9-rc4. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity. Se encontró un fallo en el kernel de Linux versiones anteriores a 5.9-rc4. Una corrupción de la memoria puede ser explotada para conseguir privilegios root de procesos no privilegiados. • https://github.com/cgwalters/cve-2020-14386 • CWE-250: Execution with Unnecessary Privileges CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2020-10781
https://notcve.org/view.php?id=CVE-2020-10781
02 Sep 2020 — A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate ... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781 • CWE-732: Incorrect Permission Assignment for Critical Resource •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 3CVE-2020-14356 – kernel: Use After Free vulnerability in cgroup BPF component
https://notcve.org/view.php?id=CVE-2020-14356
19 Aug 2020 — A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system. Se detectó un fallo de desreferencia de puntero null en el subsistema cgroupv2 del kernel de Linux en versiones anteriores a 5.7.10, en la manera de reiniciar el sistema. Un usuario local podría usar este fallo para bloquear el sistema o escalar sus privilegios en el siste... • https://github.com/ShaikUsaf/linux-4.19.72_CVE-2020-14356 • CWE-416: Use After Free CWE-476: NULL Pointer Dereference •
CVSS: 7.1EPSS: 0%CPEs: 13EXPL: 0CVE-2020-24394 – kernel: umask not applied on filesystem without ACL support
https://notcve.org/view.php?id=CVE-2020-24394
19 Aug 2020 — In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered. En el kernel de Linux versiones anteriores a 5.7.8, el archivo fs/nfsd/vfs.c (en el servidor NFS), puede establecer permisos incorrectos en nuevos objetos de un sistema de archivos cuando el sistema de archivos carece de soporte de ACL, también se conoce como CID-22cf84... • http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html • CWE-732: Incorrect Permission Assignment for Critical Resource •
CVSS: 4.3EPSS: 0%CPEs: 21EXPL: 0CVE-2020-16166 – kernel: information exposure in drivers/char/random.c and kernel/time/timer.c
https://notcve.org/view.php?id=CVE-2020-16166
30 Jul 2020 — The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c. El kernel de Linux versiones hasta 5.7.11, permite a atacantes remotos realizar observaciones que ayudan a obtener información confidencial sobre el estado interno de la red RNG, también se conoce como CID-f227e3ec3b5c. Esto está relacionado con los archivos d... • http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-330: Use of Insufficiently Random Values •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-10768 – kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.
https://notcve.org/view.php?id=CVE-2020-10768
21 Jul 2020 — A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo en el kernel de Linux versiones anteriores a 5.8-rc1 en la función prctl(), donde puede ser usado para habilitar la especulación de rama indire... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768 • CWE-440: Expected Behavior Violation •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-10767 – kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available.
https://notcve.org/view.php?id=CVE-2020-10767
21 Jul 2020 — A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo en el kernel de Linux versiones anterior... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10767 • CWE-440: Expected Behavior Violation •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-10766 – kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.
https://notcve.org/view.php?id=CVE-2020-10766
21 Jul 2020 — A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality. Se encontró un fallo de bug lógico en el kern... • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10766 • CWE-440: Expected Behavior Violation •