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high 7.8

CVE-2020-36385 json

An issue was discovered in the Linux kernel before 5.10.

published 5y ago modified 4mo ago also EUVD-2020-23916

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.

Patch / fix

  • linux linux_kernel 5.10
  • linux Debian 14, Debian 13, Debian 12 5.10.4-1

debian advisories DEBIAN-CVE-2020-36385

  • linux Ubuntu 18.04 LTS 4.15.0-162.170
  • linux Ubuntu 20.04 LTS 5.4.0-90.101
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1115.122
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1059.62
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1057.61
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1055.58
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1007.8
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1102.104

ubuntu advisories UBUNTU-CVE-2020-36385

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

  • kpatch-patch-4_18_0-305 RHEL 8 1-6.el8
  • kpatch-patch-4_18_0-305_3_1 RHEL 8 1-5.el8_4
  • kpatch-patch-4_18_0-305_7_1 RHEL 8 1-4.el8_4
  • kpatch-patch-4_18_0-305_10_2 RHEL 8 1-3.el8_4
  • kpatch-patch-4_18_0-305_12_1 RHEL 8 1-2.el8_4
  • kpatch-patch-4_18_0-305_17_1 RHEL 8 1-1.el8_4
  • kpatch-patch-4_18_0-305_19_1 RHEL 8 1-1.el8_4
  • kernel RHEL 8 4.18.0-305.25.1.el8_4

red hat advisories RHSA-2021:3987RHSA-2021:4687RHSA-2021:4875RHSA-2021:4871RHSA-2021:4122RHSA-2021:4056

  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.54.1
  • kernel-syms-rt SLE Real Time 12 SP5 4.12.14-10.54.1
  • kernel-rt_debug SLE Real Time 12 SP5 4.12.14-10.54.1
  • kernel-source-rt SLE Real Time 12 SP5 4.12.14-10.54.1
  • kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +3 more 4.4.180-94.147.1
  • kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +3 more 4.4.180-94.147.1
  • kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.147.1
  • kgraft-patch-SLE12-SP3_Update_40 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +2 more 1-4.3.1

suse advisories SUSE-SU-2021:14849-1SUSE-SU-2021:2643-1SUSE-SU-2021:2584-1SUSE-SU-2021:2577-1SUSE-SU-2021:2560-1SUSE-SU-2021:2542-1

  • kernel-default openSUSE Leap 15.3 4.12.14-197.99.1
  • kernel-vanilla openSUSE Leap 15.3 4.12.14-197.99.1
  • kernel-kvmsmall openSUSE Leap 15.3 4.12.14-197.99.1
  • kernel-zfcpdump openSUSE Leap 15.3 4.12.14-197.99.1
  • kernel-azure openSUSE Leap 15.3 5.3.18-38.8.1
  • kernel-syms-azure openSUSE Leap 15.3 5.3.18-38.8.1
  • kernel-source-azure openSUSE Leap 15.3 5.3.18-38.8.1
  • kernel-64kb openSUSE Leap 15.3 5.3.18-59.10.1

opensuse advisories openSUSE-SU-2021:2427-1openSUSE-SU-2021:2202-1openSUSE-SU-2021:2184-1

  • kernel-rt Rocky Linux 8 4.18.0-305.25.1.rt7.97.el8_4
  • kernel Rocky Linux 8 4.18.0-305.25.1.el8_4

rocky linux advisories RLSA-2021:4088RLSA-2021:4056

Is CVE-2020-36385 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2020-36385 updated cvss 7.8

kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free

  • 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 CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-305.25.1.el8_4, kernel-debuginfo-common-aarch64 4.18.0-305.25.1.el8_4, kernel-debuginfo-common-ppc64le 4.18.0-305.25.1.el8_4
    fixed: vendor fix RHSA-2021:4056
  • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-debuginfo-common-x86_64 4.18.0-147.57.1.el8_1, kernel-debuginfo-common-aarch64 4.18.0-147.57.1.el8_1, kernel-debuginfo-common-ppc64le 4.18.0-147.57.1.el8_1
    fixed: vendor fix RHSA-2021:4687
  • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-debuginfo-common-x86_64 4.18.0-193.70.1.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.70.1.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.70.1.el8_2
    fixed: vendor fix RHSA-2021:4871
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-305.25.1.el8_4, kernel 4.18.0-305.25.1.el8_4, bpftool 4.18.0-305.25.1.el8_4, kpatch-patch-4_18_0-305 1-6.el8, kernel-core 4.18.0-305.25.1.el8_4, kernel-tools 4.18.0-305.25.1.el8_4, +22 more
    fixed: vendor fix RHSA-2021:4056
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) perf 4.18.0-147.57.1.el8_1, kernel 4.18.0-147.57.1.el8_1, bpftool 4.18.0-147.57.1.el8_1, kernel-core 4.18.0-147.57.1.el8_1, kernel-tools 4.18.0-147.57.1.el8_1, python3-perf 4.18.0-147.57.1.el8_1, +25 more
    fixed: vendor fix RHSA-2021:4687
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) perf 4.18.0-193.70.1.el8_2, kernel 4.18.0-193.70.1.el8_2, bpftool 4.18.0-193.70.1.el8_2, kernel-core 4.18.0-193.70.1.el8_2, kernel-tools 4.18.0-193.70.1.el8_2, python3-perf 4.18.0-193.70.1.el8_2, +26 more
    fixed: vendor fix RHSA-2021:4871
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.49.1.el7, kernel 3.10.0-1160.49.1.el7, bpftool 3.10.0-1160.49.1.el7, python-perf 3.10.0-1160.49.1.el7, kernel-tools 3.10.0-1160.49.1.el7, kernel-tools-libs 3.10.0-1160.49.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.49.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.49.1.el7
    fixed: vendor fix RHSA-2021:4777
show 28 more
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-trace 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.49.1.rt56.1189.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-kvm 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-trace 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-debug-kvm 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-trace-kvm 3.10.0-1160.49.1.rt56.1189.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.49.1.rt56.1189.el7
    fixed: vendor fix RHSA-2021:4779
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-core 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-modules 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-debug-core 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-debug-modules 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-modules-extra 4.18.0-305.25.1.rt7.97.el8_4, +2 more
    fixed: vendor fix RHSA-2021:4088
  • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-core 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-modules 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-debug-core 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-debug-modules 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-modules-extra 4.18.0-193.70.1.rt13.120.el8_2, +2 more
    fixed: vendor fix RHSA-2021:4875
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-kvm 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-core 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-modules 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-debug-kvm 4.18.0-305.25.1.rt7.97.el8_4, kernel-rt-debug-core 4.18.0-305.25.1.rt7.97.el8_4, +4 more
    fixed: vendor fix RHSA-2021:4088
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-kvm 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-core 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-modules 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-debug-kvm 4.18.0-193.70.1.rt13.120.el8_2, kernel-rt-debug-core 4.18.0-193.70.1.rt13.120.el8_2, +4 more
    fixed: vendor fix RHSA-2021:4875
  • Red Hat Enterprise Linux Server (v. 6 ELS) perf 2.6.32-754.43.1.el6, kernel 2.6.32-754.43.1.el6, kernel-kdump 2.6.32-754.43.1.el6, kernel-firmware 2.6.32-754.43.1.el6, kernel-abi-whitelists 2.6.32-754.43.1.el6, kernel-debuginfo-common-i686 2.6.32-754.43.1.el6, +2 more
    fixed: vendor fix RHSA-2022:0157
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.49.1.el7, kernel 3.10.0-1160.49.1.el7, bpftool 3.10.0-1160.49.1.el7, python-perf 3.10.0-1160.49.1.el7, kernel-kdump 3.10.0-1160.49.1.el7, kernel-tools 3.10.0-1160.49.1.el7, +17 more
    fixed: vendor fix RHSA-2021:4777
  • Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.102.1.el7, kernel 3.10.0-327.102.1.el7, python-perf 3.10.0-327.102.1.el7, kernel-tools 3.10.0-327.102.1.el7, kernel-tools-libs 3.10.0-327.102.1.el7, kernel-abi-whitelists 3.10.0-327.102.1.el7, +1 more
    fixed: vendor fix RHSA-2021:4774
  • Red Hat Enterprise Linux Server AUS (v. 7.3) perf 3.10.0-514.95.1.el7, kernel 3.10.0-514.95.1.el7, python-perf 3.10.0-514.95.1.el7, kernel-tools 3.10.0-514.95.1.el7, kernel-tools-libs 3.10.0-514.95.1.el7, kernel-abi-whitelists 3.10.0-514.95.1.el7, +1 more
    fixed: vendor fix RHSA-2021:4768
  • Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.95.1.el7, kernel 3.10.0-693.95.1.el7, python-perf 3.10.0-693.95.1.el7, kernel-tools 3.10.0-693.95.1.el7, kernel-tools-libs 3.10.0-693.95.1.el7, kernel-abi-whitelists 3.10.0-693.95.1.el7, +1 more
    fixed: vendor fix RHSA-2021:4692
  • Red Hat Enterprise Linux Server AUS (v. 7.6) perf 3.10.0-957.86.1.el7, kernel 3.10.0-957.86.1.el7, bpftool 3.10.0-957.86.1.el7, python-perf 3.10.0-957.86.1.el7, kernel-tools 3.10.0-957.86.1.el7, kernel-tools-libs 3.10.0-957.86.1.el7, +2 more
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server AUS (v. 7.7) perf 3.10.0-1062.59.1.el7, kernel 3.10.0-1062.59.1.el7, bpftool 3.10.0-1062.59.1.el7, python-perf 3.10.0-1062.59.1.el7, kernel-tools 3.10.0-1062.59.1.el7, kernel-tools-libs 3.10.0-1062.59.1.el7, +2 more
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Server E4S (v. 7.6) perf 3.10.0-957.86.1.el7, kernel 3.10.0-957.86.1.el7, python-perf 3.10.0-957.86.1.el7, kernel-tools 3.10.0-957.86.1.el7, kpatch-patch-3_10_0-957_65_1 1-7.el7, kpatch-patch-3_10_0-957_66_1 1-7.el7, +11 more
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server E4S (v. 7.7) perf 3.10.0-1062.59.1.el7, kernel 3.10.0-1062.59.1.el7, bpftool 3.10.0-1062.59.1.el7, python-perf 3.10.0-1062.59.1.el7, kernel-tools 3.10.0-1062.59.1.el7, kpatch-patch-3_10_0-1062_43_1 1-7.el7, +11 more
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Server Optional (v. 6 ELS) python-perf 2.6.32-754.43.1.el6, kernel-debuginfo-common-i686 2.6.32-754.43.1.el6, kernel-debuginfo-common-s390x 2.6.32-754.43.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.43.1.el6
    fixed: vendor fix RHSA-2022:0157
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.49.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.49.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.49.1.el7
    fixed: vendor fix RHSA-2021:4777
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.102.1.el7
    fixed: vendor fix RHSA-2021:4774
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.95.1.el7
    fixed: vendor fix RHSA-2021:4768
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.95.1.el7
    fixed: vendor fix RHSA-2021:4692
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.86.1.el7
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.59.1.el7
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.86.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.86.1.el7
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.59.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.59.1.el7
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.86.1.el7
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.59.1.el7
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Server TUS (v. 7.6) perf 3.10.0-957.86.1.el7, kernel 3.10.0-957.86.1.el7, bpftool 3.10.0-957.86.1.el7, python-perf 3.10.0-957.86.1.el7, kernel-tools 3.10.0-957.86.1.el7, kernel-tools-libs 3.10.0-957.86.1.el7, +2 more
    fixed: vendor fix RHSA-2021:4770
  • Red Hat Enterprise Linux Server TUS (v. 7.7) perf 3.10.0-1062.59.1.el7, kernel 3.10.0-1062.59.1.el7, bpftool 3.10.0-1062.59.1.el7, python-perf 3.10.0-1062.59.1.el7, kernel-tools 3.10.0-1062.59.1.el7, kernel-tools-libs 3.10.0-1062.59.1.el7, +2 more
    fixed: vendor fix RHSA-2021:3987
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.49.1.el7, kernel 3.10.0-1160.49.1.el7, bpftool 3.10.0-1160.49.1.el7, python-perf 3.10.0-1160.49.1.el7, kernel-tools 3.10.0-1160.49.1.el7, kernel-tools-libs 3.10.0-1160.49.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.49.1.el7
    fixed: vendor fix RHSA-2021:4777

2 more fixed, 2 more not affected in the full advisory

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

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.