CVSS: 5.5EPSS: 0%CPEs: 15EXPL: 0CVE-2020-25641 – kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS
https://notcve.org/view.php?id=CVE-2020-25641
A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un fallo en la implementación de biovecs del kernel de Linux en versiones anteriores a 5.9-rc7. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html http://www.openwall.com/lists/oss-security/2020/10/06/9 https://bugzilla.redhat.com/show_bug.cgi?id=1881424 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/2020/ • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 6.9EPSS: 0%CPEs: 1EXPL: 1CVE-2020-26541 – kernel: security bypass in certs/blacklist.c and certs/system_keyring.c
https://notcve.org/view.php?id=CVE-2020-26541
The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c. El kernel de Linux versiones hasta 5.8.13, no aplica apropiadamente el mecanismo de protección Secure Boot Forbidden Signature Database (también se conoce como dbx). Esto afecta a los archivos certs/blacklist.c y certs/system_keyring.c A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries for EFI_CERT_X509_GUID are contained in the Secure Boot Forbidden Signature Database, the entries are skipped. This can cause a security threat and breach system integrity, confidentiality and even lead to a denial of service problem. • https://lkml.org/lkml/2020/9/15/1871 https://access.redhat.com/security/cve/CVE-2020-26541 https://bugzilla.redhat.com/show_bug.cgi?id=1886285 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2020-26088
https://notcve.org/view.php?id=CVE-2020-26088
A missing CAP_NET_RAW check in NFC socket creation in net/nfc/rawsock.c in the Linux kernel before 5.8.2 could be used by local attackers to create raw sockets, bypassing security mechanisms, aka CID-26896f01467a. Una falta de comprobación de CAP_NET_RAW en la creación de sockets NFC en el archivo net/nfc/rawsock.c en el Kernel de Linux versiones anteriores a 5.8.2, podría ser usada por unos atacantes locales para crear sockets sin procesar, omitiendo los mecanismos de seguridad, también se conoce como CID-26896f01467a. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2 https://github.com/torvalds/linux/commit/26896f01467a28651f7a536143fe5ac8449d4041 https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html https: • CWE-276: Incorrect Default Permissions •
CVSS: 5.6EPSS: 0%CPEs: 8EXPL: 0CVE-2020-14390
https://notcve.org/view.php?id=CVE-2020-14390
A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. Se encontró un fallo en el kernel de Linux en las versiones anteriores a 5.9-rc6. Cuando se cambia el tamaño de la pantalla, puede ocurrir una escritura de memoria fuera de límites conllevando a una corrupción de la memoria o una denegación de servicio.La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html https://bugzilla.redhat.com/show_bug.cgi?id=1876788 https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html • CWE-787: Out-of-bounds Write •
CVSS: 6.2EPSS: 0%CPEs: 8EXPL: 0CVE-2020-14385 – kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt
https://notcve.org/view.php?id=CVE-2020-14385
A flaw was found in the Linux kernel before 5.9-rc4. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un fallo en el kernel de Linux versiones anteriores a 5.9-rc4. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14385 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f4020438fab05364018c91f7e02ebdd192085933 https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html https://usn.ubuntu.com/4576-1 https://access.redhat.com/security/cve/CVE-2020-14385 https://bugzilla.redhat.com/show_bug.cgi?id=1874800 • CWE-131: Incorrect Calculation of Buffer Size •