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
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 indirecta después de haber sido deshabilitada. Esta llamada reporta incorrectamente que está "force disabled" cuando no lo está y abre el sistema a ataques de Spectre v2. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf https://access.redhat.com/security/cve/CVE-2020-10768 https://bugzilla.redhat.com/show_bug.cgi?id=1845868 • 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
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 anteriores a 5.8-rc1, en la implementación de la Enhanced IBPB (Indirect Branch Prediction Barrier). • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10767 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21998a351512eba4ed5969006f0c55882d995ada https://access.redhat.com/security/cve/CVE-2020-10767 https://bugzilla.redhat.com/show_bug.cgi?id=1845867 • CWE-440: Expected Behavior Violation •
CVSS: 7.8EPSS: 0%CPEs: 35EXPL: 1CVE-2019-19448
https://notcve.org/view.php?id=CVE-2019-19448
In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure. En el kernel de Linux versiones 5.0.21 y 5.3.11, montando una imagen de sistema de archivos btrfs diseñada, al realizar algunas operaciones y luego haciendo una llamada de sistema syncfs puede conllevar a un uso de la memoria previamente liberada en la función try_merge_free_space en el archivo fs/btrfs/free-space-cache.c porque el puntero en una estructura de datos izquierda puede ser el mismo que el puntero en una estructura de datos derecha. • https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448 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://security.netapp.com/advisory/ntap-20200103-0001 https://usn.ubuntu.com/4578-1 • CWE-416: Use After Free •
CVSS: 7.2EPSS: 0%CPEs: 15EXPL: 0CVE-2014-0069 – kernel: cifs: incorrect handling of bogus user pointers during uncached writes
https://notcve.org/view.php?id=CVE-2014-0069
The cifs_iovec_write function in fs/cifs/file.c in the Linux kernel through 3.13.5 does not properly handle uncached write operations that copy fewer than the requested number of bytes, which allows local users to obtain sensitive information from kernel memory, cause a denial of service (memory corruption and system crash), or possibly gain privileges via a writev system call with a crafted pointer. La función cifs_iovec_write en fs/cifs/file.c en el kernel de Linux hasta 3.13.5 no maneja debidamente operaciones de escritura no en caché que copian menos bytes de los solicitados, lo que permite a usuarios locales obtener información sensible de la memoria del kernel, causar una denegación de servicio (corrupción de memoria y caída del sistema) o posiblemente ganar privilegios a través de una llamada al sistema writev con un puntero manipulado. • http://article.gmane.org/gmane.linux.kernel.cifs/9401 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5d81de8e8667da7135d3a32a964087c0faf5483f http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00026.html http://rhn.redhat.com/errata/RHSA-2014-0328.html http://www.openwall.com/lists/oss-security/2014/02/17/4 http://www.securityfocus.com/bid/65588 https://bugzilla.redhat.com/show_bug.cgi?id=1064253 https://github.com/torvalds/linux/comm • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 4.6EPSS: 0%CPEs: 5EXPL: 0CVE-2001-0886
https://notcve.org/view.php?id=CVE-2001-0886
Buffer overflow in glob function of glibc allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a glob pattern that ends in a brace "{" character. Desbordamiento de buffer en la función glob de glibc para Red Hat Linux 6.2 a 7.2, y otros sistemas operativos, permite a atacantes causar una denegación de servicio (caída) y posiblemente ejecutar código arbitrarios mediante un patrón de glob que acaba en una llave "{" • http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000447 http://download.immunix.org/ImmunixOS/7.0/updates/IMNX-2001-70-037-01 http://sources.redhat.com/ml/bug-glibc/2001-11/msg00109.html http://www.ciac.org/ciac/bulletins/m-029.shtml http://www.debian.org/security/2002/dsa-103 http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-095.php3 http://www.linuxsecurity.com/advisories/other_advisory-1752.html http://www.redhat.com/support/errata/RHSA-2001-160&# •