CVE-2021-4002

MEDIUM

4.4

Beschreibung

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

CVE Details

CVSS v3.1 Bewertung4.4

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

AngriffsvektorLOCAL

KomplexitatLOW

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht3/3/2022

Zuletzt geandert11/21/2024

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

debian:debian_linuxfedoraproject:fedoralinux:linux_kerneloracle:communications_cloud_native_core_binding_support_functionoracle:communications_cloud_native_core_network_exposure_functionoracle:communications_cloud_native_core_policy

Schwachen (CWE)

CWE-459CWE-401

Referenzen

https://bugzilla.redhat.com/show_bug.cgi?id=2025726(secalert@redhat.com)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7ea(secalert@redhat.com)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(secalert@redhat.com)

https://www.debian.org/security/2022/dsa-5096(secalert@redhat.com)

https://www.openwall.com/lists/oss-security/2021/11/25/1(secalert@redhat.com)

https://www.oracle.com/security-alerts/cpujul2022.html(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2025726(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7ea(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2022/dsa-5096(af854a3a-2127-422b-91ae-364da2661108)

https://www.openwall.com/lists/oss-security/2021/11/25/1(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujul2022.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Korrelationen

Keine Korrelationen erfasst

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