CVE-2021-4002

MEDIUM

4.4

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.14.4

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado3/3/2022

Ultima modificacao11/21/2024

Fontenvd

Avistamentos honeypot0

Produtos afetados

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

Fraquezas (CWE)

CWE-459CWE-401

Referencias

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)

Correlacoes IOC

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