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: Unknown
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
kinetic
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bionic
ignored
xenial
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trusty
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linux-aws-5.4
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bionic
ignored
xenial
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linux-aws-5.8
kinetic
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jammy
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ignored
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kinetic
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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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trusty
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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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dne
bionic
ignored
xenial
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trusty
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linux-azure-5.4
kinetic
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jammy
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impish
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focal
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bionic
ignored
xenial
dne
trusty
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linux-azure-5.8
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jammy
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impish
dne
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focal
ignored
bionic
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xenial
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linux-azure-edge
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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-fde
kinetic
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jammy
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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focal
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
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ignored
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ignored
impish
ignored
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ignored
focal
ignored
bionic
ignored
xenial
ignored
trusty
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linux-gcp-4.15
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jammy
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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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impish
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focal
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bionic
ignored
xenial
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linux-gcp-5.4
kinetic
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focal
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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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jammy
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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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focal
ignored
bionic
dne
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
dne
jammy
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impish
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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
dne
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
dne
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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jammy
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bionic
ignored
xenial
dne
trusty
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linux-hwe-5.8
kinetic
dne
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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focal
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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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ignored
bionic
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linux-ibm-5.4
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ignored
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linux-intel-5.13
kinetic
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ignored
bionic
dne
xenial
dne
trusty
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linux-intel-iotg
kinetic
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jammy
ignored
impish
dne
focal
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bionic
dne
xenial
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trusty
dne
linux-intel-iotg-5.15
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-kvm
kinetic
ignored
jammy
ignored
impish
ignored
hirsute
ignored
focal
ignored
bionic
ignored
xenial
ignored
trusty
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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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jammy
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focal
ignored
bionic
dne
xenial
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trusty
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linux-lts-xenial
kinetic
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jammy
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impish
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bionic
dne
xenial
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ignored
linux-oem
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-oem-5.10
kinetic
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jammy
dne
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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impish
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ignored
bionic
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linux-oem-5.14
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ignored
bionic
dne
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
jammy
ignored
focal
dne
bionic
dne
xenial
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linux-oem-osp1
kinetic
dne
jammy
dne
impish
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bionic
ignored
xenial
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kinetic
ignored
jammy
ignored
impish
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hirsute
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bionic
ignored
xenial
ignored
trusty
dne
linux-oracle-5.0
kinetic
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jammy
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hirsute
dne
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bionic
ignored
xenial
dne
trusty
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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
dne
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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impish
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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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dne
focal
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
dne
impish
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bionic
ignored
xenial
dne
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dne
linux-raspi2
kinetic
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jammy
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bionic
ignored
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trusty
dne
linux-raspi2-5.3
kinetic
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jammy
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ignored
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linux-riscv
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ignored
jammy
ignored
impish
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bionic
dne
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linux-riscv-5.11
kinetic
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linux-riscv-5.8
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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