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Fencer Vulns
medium 5.5

CVE-2020-36322 json

An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka CID-5d069dbe8aaf.

published 2021-04-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23861

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as CVE-2021-28950.

Patch / fix

  • linux linux_kernel 5.10.6
  • linux Debian 14, Debian 13, Debian 12 5.10.9-1

debian advisories DEBIAN-CVE-2020-36322

  • linux Ubuntu 18.04 LTS 4.15.0-162.170
  • linux Ubuntu 20.04 LTS 5.4.0-67.75
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1115.122
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1039.41
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1038.41
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1037.39
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1102.104
  • linux-kvm Ubuntu 20.04 LTS 5.4.0-1034.35

ubuntu advisories UBUNTU-CVE-2020-36322

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 8 4.18.0-305.el8
  • perf RHEL 8 4.18.0-305.el8
  • bpftool RHEL 8 4.18.0-305.el8
  • kernel-core RHEL 8 4.18.0-305.el8
  • kernel-tools RHEL 8 4.18.0-305.el8
  • python3-perf RHEL 8 4.18.0-305.el8
  • kernel-modules RHEL 8 4.18.0-305.el8
  • kernel-zfcpdump RHEL 8 4.18.0-305.el8

red hat advisories RHSA-2021:1578RHSA-2022:0063RHSA-2022:0065RHSA-2022:0072RHSA-2022:0078

  • kernel-64kb SLE Module for Basesystem 15 SP3 5.3.18-59.5.2
  • kernel-syms SLE Module for Development Tools 15 SP3 5.3.18-59.5.1
  • kernel-source SLE Module for Development Tools 15 SP3, SLE Module for Basesystem 15 SP3 5.3.18-59.5.2
  • kernel-default SLE Workstation Extension 15 SP3, SLE Module for Legacy 15 SP3, SLE Module for Basesystem 15 SP3 +2 more 5.3.18-59.5.2
  • kernel-preempt SLE Workstation Extension 15 SP3, SLE Module for Development Tools 15 SP3, SLE Module for Basesystem 15 SP3 5.3.18-59.5.2
  • kernel-zfcpdump SLE Module for Basesystem 15 SP3 5.3.18-59.5.2
  • kernel-obs-build SLE Module for Development Tools 15 SP3 5.3.18-59.5.1
  • kernel-default-base SLE Module for Basesystem 15 SP3 5.3.18-59.5.2.18.2.2

suse advisories SUSE-SU-2021:2577-1SUSE-SU-2021:2198-1SUSE-SU-2021:1977-1SUSE-SU-2021:1975-1SUSE-SU-2021:1870-1SUSE-SU-2021:1865-1

  • kernel-64kb openSUSE Leap 15.3 5.3.18-59.5.2
  • kernel-syms openSUSE Leap 15.3 5.3.18-59.5.1
  • kernel-obs-qa openSUSE Leap 15.3 5.3.18-59.5.1
  • kernel-source openSUSE Leap 15.3 5.3.18-59.5.2
  • kernel-default openSUSE Leap 15.3 5.3.18-59.5.2
  • kernel-preempt openSUSE Leap 15.3 5.3.18-59.5.2
  • kernel-kvmsmall openSUSE Leap 15.3 5.3.18-59.5.2
  • kernel-zfcpdump openSUSE Leap 15.3 5.3.18-59.5.2

opensuse advisories openSUSE-SU-2021:1977-1openSUSE-SU-2021:1975-1openSUSE-SU-2021:0579-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-36322 updated cvss 5.5

kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-305.el8, kernel-debuginfo-common-aarch64 4.18.0-305.el8, kernel-debuginfo-common-ppc64le 4.18.0-305.el8
    fixed: vendor fix RHSA-2021:1578
  • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-debuginfo-common-x86_64 4.18.0-193.71.1.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.71.1.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.71.1.el8_2
    fixed: vendor fix RHSA-2022:0072
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-305.el8, kernel 4.18.0-305.el8, bpftool 4.18.0-305.el8, kernel-core 4.18.0-305.el8, kernel-tools 4.18.0-305.el8, python3-perf 4.18.0-305.el8, +15 more
    fixed: vendor fix RHSA-2021:1578
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) perf 4.18.0-193.71.1.el8_2, kernel 4.18.0-193.71.1.el8_2, bpftool 4.18.0-193.71.1.el8_2, kernel-core 4.18.0-193.71.1.el8_2, kernel-tools 4.18.0-193.71.1.el8_2, python3-perf 4.18.0-193.71.1.el8_2, +15 more
    fixed: vendor fix RHSA-2022:0072
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.53.1.el7, kernel 3.10.0-1160.53.1.el7, bpftool 3.10.0-1160.53.1.el7, python-perf 3.10.0-1160.53.1.el7, kernel-tools 3.10.0-1160.53.1.el7, kernel-tools-libs 3.10.0-1160.53.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.53.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.53.1.el7
    fixed: vendor fix RHSA-2022:0063
show 4 more
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-trace 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.53.1.rt56.1193.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-kvm 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-trace 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-debug-kvm 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-trace-kvm 3.10.0-1160.53.1.rt56.1193.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.53.1.rt56.1193.el7
    fixed: vendor fix RHSA-2022:0065
  • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-core 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-modules 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-debug-core 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-debug-modules 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-modules-extra 4.18.0-193.71.1.rt13.121.el8_2, +2 more Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-kvm 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-core 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-modules 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-debug-kvm 4.18.0-193.71.1.rt13.121.el8_2, kernel-rt-debug-core 4.18.0-193.71.1.rt13.121.el8_2, +4 more
    fixed: vendor fix RHSA-2022:0078
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.53.1.el7, kernel 3.10.0-1160.53.1.el7, bpftool 3.10.0-1160.53.1.el7, python-perf 3.10.0-1160.53.1.el7, kernel-kdump 3.10.0-1160.53.1.el7, kernel-tools 3.10.0-1160.53.1.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.53.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.53.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.53.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.53.1.el7, kernel 3.10.0-1160.53.1.el7, bpftool 3.10.0-1160.53.1.el7, python-perf 3.10.0-1160.53.1.el7, kernel-tools 3.10.0-1160.53.1.el7, kernel-tools-libs 3.10.0-1160.53.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.53.1.el7
    fixed: vendor fix RHSA-2022:0063
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +81 more Red Hat Enterprise Linux BaseOS EUS (v. 8.2) kernel-headers 4.18.0-193.71.1.el8_2 Red Hat Enterprise Linux Client (v. 7) kernel-headers 3.10.0-1160.53.1.el7 Red Hat Enterprise Linux Server (v. 7) kernel-headers 3.10.0-1160.53.1.el7 Red Hat Enterprise Linux Workstation (v. 7) kernel-headers 3.10.0-1160.53.1.el7
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.