{"affected":[{"affectedData":[{"product":"Linux kernel through version 4.15","vendor":"n/a","versions":[{"status":"affected","version":"Linux kernel through version 4.15"}]}],"source":"secalert@redhat.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"EA4F2AD9-993F-4246-B6F9-7723FF82AF6C","versionEndIncluding":"4.15.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image."},{"lang":"es","value":"La función ext4_iget en fs/ext4/inode.c en el kernel de Linux hasta la versión 4.15.15 gestiona de manera incorrecta el caso de un directorio root con un i_lnks_count igual a cero, lo que permite que los atacantes provoquen una denegación de servicio (desreferencia de puntero NULL en ext4_process_freed_data y OOPS) mediante una imagen ext4 manipulada."}],"id":"CVE-2018-1092","lastModified":"2026-06-17T01:50:27.757","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"COMPLETE","baseScore":7.1,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:C","version":"2.0"},"exploitabilityScore":8.6,"impactScore":6.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":true}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.0"},"exploitabilityScore":1.8,"impactScore":3.6,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2018-04-02T03:29:00.230","references":[{"source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"],"url":"http://openwall.com/lists/oss-security/2018/03/29/1"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2018:2948"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2018:3083"},{"source":"secalert@redhat.com","url":"https://access.redhat.com/errata/RHSA-2018:3096"},{"source":"secalert@redhat.com","tags":["Issue Tracking"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=199179"},{"source":"secalert@redhat.com","tags":["Issue Tracking"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=199275"},{"source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1560777"},{"source":"secalert@redhat.com","tags":["Patch"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44"},{"source":"secalert@redhat.com","url":"https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3676-1/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3676-2/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3677-1/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3677-2/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3678-1/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3678-2/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3678-3/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3678-4/"},{"source":"secalert@redhat.com","url":"https://usn.ubuntu.com/3754-1/"},{"source":"secalert@redhat.com","url":"https://www.debian.org/security/2018/dsa-4187"},{"source":"secalert@redhat.com","url":"https://www.debian.org/security/2018/dsa-4188"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"http://openwall.com/lists/oss-security/2018/03/29/1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHSA-2018:2948"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHSA-2018:3083"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://access.redhat.com/errata/RHSA-2018:3096"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=199179"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=199275"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Third Party Advisory"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1560777"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3676-1/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3676-2/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3677-1/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3677-2/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3678-1/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3678-2/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3678-3/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3678-4/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://usn.ubuntu.com/3754-1/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://www.debian.org/security/2018/dsa-4187"},{"source":"af854a3a-2127-422b-91ae-364da2661108","url":"https://www.debian.org/security/2018/dsa-4188"}],"sourceIdentifier":"secalert@redhat.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-476"}],"source":"nvd@nist.gov","type":"Primary"}]}