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CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 1

The keyctl_session_to_parent function in security/keys/keyctl.c in the Linux kernel 2.6.35.4 and earlier expects that a certain parent session keyring exists, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function. La función keyctl_session_to_parent en security/keys/keyctl.c en el kernel de Linux v2.6.35.4 y anteriores, espera que determinados keyrings de sesión aparezcan, lo que permite a usuarios locales provocar una denegación de servicio(deferencia a puntero nulo y caída de sistema) o posiblemente tener otro impacto sin especificar a través del argumento KEYCTL_SESSION_TO_PARENT a la función keyctl. • http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html http://secunia.com/advisories/41263 http://securitytracker.com/id?1024384 http://twitter.com/taviso/statuses/22777866582 http://www.openwall.com/lists/oss-security/2010/09/02/1 http://www.securityfocus.com/bid/42932 http://www.ubuntu.com/usn/USN-1000-1 http://www.vupen.com/english/advisories/2011/0298 https://bugzilla.redhat.c • CWE-476: NULL Pointer Dereference •

CVSS: 10.0EPSS: 1%CPEs: 10EXPL: 0

The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does not properly validate certain values associated with an interface, which allows attackers to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via vectors related to a routing change. La función pppol2tp_xmit en drivers/net/pppol2tp.c en la implementación L2TP en el kernel de Linux anterior a v2.6.34, no valida adecuadamente determinados valores asociados a un interfaz, lo que permite a atacantes provocar una denegación de servicio (deferencia a puntero null y OOPS) o posiblemente tener otro impacto no especificados a través de vectores relacionados con un cambio de enrutamiento. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3feec9095d12e311b7d4eb7fe7e5dfa75d4a72a5 http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00000.html http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34 http://www.openwall.com/lists/oss-security/2010/06/23/3 http://www.openwall.com/lists/oss-security/2010/07/04/2 http://www.openwall.com/lists/oss-security/2010/07/04/3 http://www.openwall.com/lists/oss-security/ • CWE-476: NULL Pointer Dereference •

CVSS: 7.8EPSS: 0%CPEs: 11EXPL: 0

The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a "cache stuffing" issue and MS-DFS referrals. La funcionalidad de resolución DNS en el kernel de Linux anterior a v2.6.35, cuando CONFIG_CIFS_DFS_UPCALL está activado, cuenta con el "keyring" de usuario para la "upcall" dns_resolver en el espacio de usuario cifs.upcall, lo que permite a usuarios locales secuestrar los resultados de las consultas DNS y realizar montajes (mounts) CIFS de su elección a través de vectores que involucran una llamada add_key, relacionado con un cuestión de relleno de caché (stuffing) y referencias MS-DFS. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4c0c03ca54f72fdd5912516ad0a23ec5cf01bda7 http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html http://marc.info/?l=oss-security&m=128072090331700&w=2 http://marc.info/?l=oss-security&m=128078387328921&w=2 http://marc.info/?l=oss-security&m=128080755321157&w=2 http://secunia.com/advisories/43315 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 http://www.mandr •

CVSS: 5.5EPSS: 0%CPEs: 12EXPL: 0

The mext_check_arguments function in fs/ext4/move_extent.c in the Linux kernel before 2.6.35 allows local users to overwrite an append-only file via a MOVE_EXT ioctl call that specifies this file as a donor. La función mext_check_arguments en fs/ext4/move_extent.c en el kernel de Linux anterior a v2.6.35, permite a usuarios locales sobrescribir una archivo de solo-añadir (append-only) a través de una llamada MOVE_EXT ioctl que especifica este archivo como un donante. • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72 http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00000.html http://secunia.com/advisories/43315 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 http://www.openwall.com/lists/oss-security/2010/06/07/1 http://www.openwall.com/lists/oss-security/2010/06/09/1 http://www.redhat.com/support/errata/RHSA-2010-0610.html http://w •

CVSS: 4.3EPSS: 0%CPEs: 8EXPL: 0

WebKit, as used in Apple Safari before 4.1.3 and 5.0.x before 5.0.3, Google Chrome before 6.0.472.53, and webkitgtk before 1.2.6, does not properly restrict read access to images derived from CANVAS elements, which allows remote attackers to bypass the Same Origin Policy and obtain potentially sensitive image data via a crafted web site. Google Chrome anterior a v6.0.472.53 no restringe apropiadamente el acceso de lectura a las imágenes, lo que permite a atacantes remotos evitar la "Same Origin Policy" y obtener información potencialmente sensible a través de vectores sin especificar • http://code.google.com/p/chromium/issues/detail?id=53001 http://googlechromereleases.blogspot.com/2010/09/stable-and-beta-channel-updates.html http://lists.apple.com/archives/security-announce/2010//Nov/msg00002.html http://lists.apple.com/archives/security-announce/2010//Nov/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html http://secunia.com/advisories/41856 http://secunia.com/advisories/42314 http://secunia.com/advisories/43068 http://secunia&# • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •