CVE-2021-3847

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 10%
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 5.17.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
vulnerable
bullseye (security)
vulnerable
bookworm
vulnerable
bookworm (security)
vulnerable
trixie
vulnerable
sid
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
focal
ignored
bionic
ignored
xenial
ignored
trusty
ignored
linux-aws
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
focal
ignored
bionic
ignored
xenial
ignored
trusty
ignored
linux-aws-5.0
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-aws-5.11
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
linux-aws-5.13
kinetic
dne
jammy
dne
impish
dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
linux-aws-5.15
kinetic
dne
jammy
dne
focal
ignored
bionic
dne
xenial
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trusty
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linux-aws-5.3
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bionic
ignored
xenial
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linux-aws-5.4
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bionic
ignored
xenial
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ignored
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xenial
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linux-azure-4.15
kinetic
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focal
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bionic
ignored
xenial
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trusty
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linux-azure-5.11
kinetic
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jammy
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impish
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focal
ignored
bionic
dne
xenial
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linux-azure-5.13
kinetic
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ignored
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xenial
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linux-azure-5.15
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linux-azure-5.3
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focal
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bionic
ignored
xenial
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trusty
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linux-azure-5.4
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jammy
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impish
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focal
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bionic
ignored
xenial
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trusty
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linux-azure-5.8
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jammy
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impish
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focal
ignored
bionic
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xenial
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linux-azure-edge
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focal
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bionic
ignored
xenial
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trusty
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linux-azure-fde
kinetic
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ignored
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focal
ignored
bionic
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xenial
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trusty
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linux-azure-fde-5.15
kinetic
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ignored
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xenial
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trusty
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linux-bluefield
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ignored
bionic
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linux-dell300x
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focal
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bionic
ignored
xenial
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linux-gcp
kinetic
ignored
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ignored
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ignored
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ignored
bionic
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xenial
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linux-gcp-4.15
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ignored
xenial
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linux-gcp-5.11
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ignored
bionic
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xenial
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trusty
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linux-gcp-5.13
kinetic
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focal
ignored
bionic
dne
xenial
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linux-gcp-5.15
kinetic
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jammy
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focal
ignored
bionic
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xenial
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trusty
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linux-gcp-5.3
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bionic
ignored
xenial
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linux-gcp-5.4
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bionic
ignored
xenial
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trusty
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linux-gcp-5.8
kinetic
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focal
ignored
bionic
dne
xenial
dne
trusty
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linux-gke
kinetic
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jammy
ignored
impish
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ignored
bionic
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xenial
ignored
trusty
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linux-gke-4.15
kinetic
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jammy
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impish
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bionic
ignored
xenial
dne
trusty
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linux-gke-5.0
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gke-5.15
kinetic
dne
jammy
dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
linux-gke-5.3
kinetic
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jammy
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impish
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dne
focal
dne
bionic
ignored
xenial
dne
trusty
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linux-gke-5.4
kinetic
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jammy
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impish
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dne
focal
dne
bionic
ignored
xenial
dne
trusty
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linux-gkeop
kinetic
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jammy
ignored
impish
dne
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dne
focal
ignored
bionic
dne
xenial
dne
trusty
dne
linux-gkeop-5.4
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-hwe
kinetic
dne
jammy
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impish
dne
hirsute
dne
focal
dne
bionic
ignored
xenial
ignored
trusty
dne
linux-hwe-5.11
kinetic
dne
jammy
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impish
dne
hirsute
dne
focal
ignored
bionic
dne
xenial
dne
trusty
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linux-hwe-5.13
kinetic
dne
jammy
dne
impish
dne
focal
ignored
bionic
dne
xenial
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trusty
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linux-hwe-5.15
kinetic
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ignored
bionic
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linux-hwe-5.4
kinetic
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bionic
ignored
xenial
dne
trusty
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linux-hwe-5.8
kinetic
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jammy
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impish
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focal
ignored
bionic
dne
xenial
dne
trusty
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linux-hwe-edge
kinetic
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jammy
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impish
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bionic
ignored
xenial
ignored
trusty
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linux-ibm
kinetic
ignored
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ignored
impish
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linux-ibm-5.4
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ignored
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ignored
bionic
dne
xenial
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kinetic
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jammy
ignored
impish
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focal
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bionic
dne
xenial
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trusty
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linux-intel-iotg-5.15
kinetic
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focal
ignored
bionic
dne
xenial
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linux-kvm
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
focal
ignored
bionic
ignored
xenial
ignored
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linux-lowlatency
kinetic
ignored
jammy
ignored
impish
dne
focal
dne
bionic
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linux-lowlatency-hwe-5.15
kinetic
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focal
ignored
bionic
dne
xenial
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linux-lts-xenial
kinetic
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jammy
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impish
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bionic
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xenial
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ignored
linux-oem
kinetic
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impish
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bionic
ignored
xenial
ignored
trusty
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linux-oem-5.10
kinetic
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jammy
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impish
dne
hirsute
dne
focal
ignored
bionic
dne
xenial
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trusty
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linux-oem-5.13
kinetic
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jammy
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ignored
bionic
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linux-oem-5.14
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ignored
bionic
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xenial
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linux-oem-5.17
kinetic
ignored
jammy
ignored
impish
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focal
dne
bionic
dne
xenial
dne
trusty
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linux-oem-5.6
kinetic
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jammy
dne
impish
dne
hirsute
dne
focal
ignored
bionic
dne
xenial
dne
trusty
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linux-oem-6.0
kinetic
dne
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ignored
focal
dne
bionic
dne
xenial
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linux-oem-osp1
kinetic
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jammy
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impish
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bionic
ignored
xenial
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kinetic
ignored
jammy
ignored
impish
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bionic
ignored
xenial
ignored
trusty
dne
linux-oracle-5.0
kinetic
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jammy
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impish
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dne
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bionic
ignored
xenial
dne
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linux-oracle-5.11
kinetic
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hirsute
dne
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ignored
bionic
dne
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linux-oracle-5.13
kinetic
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jammy
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impish
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ignored
bionic
dne
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linux-oracle-5.15
kinetic
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jammy
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ignored
bionic
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linux-oracle-5.3
kinetic
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jammy
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ignored
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linux-oracle-5.4
kinetic
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jammy
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bionic
ignored
xenial
dne
trusty
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linux-oracle-5.8
kinetic
dne
jammy
dne
impish
dne
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ignored
bionic
dne
xenial
dne
trusty
dne
linux-raspi
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
focal
ignored
bionic
dne
xenial
dne
trusty
dne
linux-raspi-5.4
kinetic
dne
jammy
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bionic
ignored
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dne
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linux-raspi2
kinetic
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dne
linux-raspi2-5.3
kinetic
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ignored
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kinetic
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jammy
ignored
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bionic
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linux-riscv-5.11
kinetic
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linux-snapdragon
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ignored
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Common Weakness Enumeration
References
https://bugzilla.redhat.com/show_bug.cgi?id=2009704
https://www.openwall.com/lists/oss-security/2021/10/14/3
https://bugzilla.redhat.com/show_bug.cgi?id=2009704
https://www.openwall.com/lists/oss-security/2021/10/14/3