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Fencer Vulns
medium 5.5

CVE-2022-50020 json

ext4: avoid resizing to a partial cluster size

published 2025-06-18 16 mo ago modified 2026-11-05 3 d ago also EUVD-2022-55296

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

ext4: avoid resizing to a partial cluster size

This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount, which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.

Patch / fix

  • Linux Linux 4.19.256, 5.4.211, 5.10.138, 5.15.63, 5.19.4, 6.0
  • linux Debian 14, Debian 13, Debian 12 6.0.2-1

debian advisories DEBIAN-CVE-2022-50020

  • linux Ubuntu 18.04 LTS 4.15.0-197.208
  • linux Ubuntu 20.04 LTS 5.4.0-132.148
  • linux Ubuntu 22.04 LTS 5.15.0-53.59
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1143.155
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1023.27
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1022.29

ubuntu advisories UBUNTU-CVE-2022-50020

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-rt RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.66.1.rt7.407.el8_10

red hat advisories RHSA-2025:14746RHSA-2025:14748RHSA-2025:14418RHSA-2025:14136RHSA-2025:14094RHSA-2025:14054

  • kernel-64kb SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS, SLE High Performance Computing 15 SP4-ESPOS 5.14.21-150400.24.170.2
  • kernel-syms SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.170.1
  • kernel-source SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.170.1
  • kernel-default SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +6 more 5.14.21-150400.24.170.2
  • kernel-zfcpdump SLES 15 SP4-LTSS, Manager Server 4.3 5.14.21-150400.24.170.2
  • kernel-obs-build SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.24.170.2
  • kernel-default-base SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 5.14.21-150400.24.170.2.150400.24.86.2
  • kernel-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.124.1

suse advisories SUSE-SU-2025:02537-1SUSE-SU-2025:02334-1SUSE-SU-2025:02322-1SUSE-SU-2025:02321-1SUSE-SU-2025:02320-1SUSE-SU-2025:02308-1

  • kernel AlmaLinux 8 4.18.0-553.66.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.66.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.66.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.66.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.66.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.66.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.66.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.66.1.el8_10

almalinux advisories ALSA-2025:12752ALSA-2025:12753

  • kernel-rt Rocky Linux 8 4.18.0-553.66.1.rt7.407.el8_10
  • kernel Rocky Linux 8 4.18.0-553.66.1.el8_10

rocky linux advisories RLSA-2025:12753RLSA-2025:12752

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-2022-50020 updated cvss 7.0

kernel: ext4: avoid resizing to a partial cluster size

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.142.1.el9_0, kernel-devel-matched 5.14.0-70.142.1.el9_0, kernel-debug-devel-matched 5.14.0-70.142.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.142.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.142.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.142.1.el9_0, +2 more
    fixed: vendor fix RHSA-2025:14054
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.66.1.el8_10, kernel 4.18.0-553.66.1.el8_10, bpftool 4.18.0-553.66.1.el8_10, kernel-core 4.18.0-553.66.1.el8_10, kernel-tools 4.18.0-553.66.1.el8_10, python3-perf 4.18.0-553.66.1.el8_10, +15 more
    fixed: vendor fix RHSA-2025:12752
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.164.1.el8_2, kernel 4.18.0-193.164.1.el8_2, bpftool 4.18.0-193.164.1.el8_2, kernel-core 4.18.0-193.164.1.el8_2, kernel-tools 4.18.0-193.164.1.el8_2, python3-perf 4.18.0-193.164.1.el8_2, +8 more
    fixed: vendor fix RHSA-2025:14136
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.168.1.el8_4, kernel 4.18.0-305.168.1.el8_4, bpftool 4.18.0-305.168.1.el8_4, kernel-core 4.18.0-305.168.1.el8_4, kernel-tools 4.18.0-305.168.1.el8_4, python3-perf 4.18.0-305.168.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:13805
show 14 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.157.1.el8_6, kernel 4.18.0-372.157.1.el8_6, bpftool 4.18.0-372.157.1.el8_6, kernel-core 4.18.0-372.157.1.el8_6, kernel-tools 4.18.0-372.157.1.el8_6, python3-perf 4.18.0-372.157.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.157.1.el8_6, kernel 4.18.0-372.157.1.el8_6, bpftool 4.18.0-372.157.1.el8_6, kernel-core 4.18.0-372.157.1.el8_6, kernel-tools 4.18.0-372.157.1.el8_6, python3-perf 4.18.0-372.157.1.el8_6, +15 more
    fixed: vendor fix RHSA-2025:13776
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) perf 4.18.0-477.106.1.el8_8, kernel 4.18.0-477.106.1.el8_8, bpftool 4.18.0-477.106.1.el8_8, kernel-core 4.18.0-477.106.1.el8_8, kernel-tools 4.18.0-477.106.1.el8_8, python3-perf 4.18.0-477.106.1.el8_8, +9 more
    fixed: vendor fix RHSA-2025:14418
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.142.1.el9_0, bpftool 5.14.0-70.142.1.el9_0, kernel-core 5.14.0-70.142.1.el9_0, kernel-tools 5.14.0-70.142.1.el9_0, python3-perf 5.14.0-70.142.1.el9_0, kernel-modules 5.14.0-70.142.1.el9_0, +14 more
    fixed: vendor fix RHSA-2025:14054
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) perf 4.18.0-305.168.1.el8_4, kernel 4.18.0-305.168.1.el8_4, bpftool 4.18.0-305.168.1.el8_4, kernel-core 4.18.0-305.168.1.el8_4, kernel-tools 4.18.0-305.168.1.el8_4, python3-perf 4.18.0-305.168.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:13805
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.157.1.el8_6, kernel 4.18.0-372.157.1.el8_6, bpftool 4.18.0-372.157.1.el8_6, kernel-core 4.18.0-372.157.1.el8_6, kernel-tools 4.18.0-372.157.1.el8_6, python3-perf 4.18.0-372.157.1.el8_6, +8 more
    fixed: vendor fix RHSA-2025:13776
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) perf 4.18.0-477.106.1.el8_8, kernel 4.18.0-477.106.1.el8_8, bpftool 4.18.0-477.106.1.el8_8, kernel-core 4.18.0-477.106.1.el8_8, kernel-tools 4.18.0-477.106.1.el8_8, python3-perf 4.18.0-477.106.1.el8_8, +8 more
    fixed: vendor fix RHSA-2025:14418
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.66.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.66.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.66.1.el8_10
    fixed: vendor fix RHSA-2025:12752
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt 3.10.0-1160.137.1.rt56.1289.el7, kernel-rt-trace 3.10.0-1160.137.1.rt56.1289.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.137.1.rt56.1289.el7
    fixed: vendor fix RHSA-2025:14746
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-kvm 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-core 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-modules 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-debug-kvm 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-debug-core 4.18.0-553.66.1.rt7.407.el8_10, +4 more
    fixed: vendor fix RHSA-2025:12753
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-kvm 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-core 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-modules 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-debug-kvm 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-debug-core 5.14.0-70.142.1.rt21.214.el9_0, +4 more Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-core 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-modules 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-debug-core 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-debug-modules 5.14.0-70.142.1.rt21.214.el9_0, kernel-rt-modules-extra 5.14.0-70.142.1.rt21.214.el9_0, +2 more
    fixed: vendor fix RHSA-2025:14094
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-core 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-modules 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-debug-core 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-debug-modules 4.18.0-553.66.1.rt7.407.el8_10, kernel-rt-modules-extra 4.18.0-553.66.1.rt7.407.el8_10, +2 more
    fixed: vendor fix RHSA-2025:12753
  • Red Hat Enterprise Linux Server (v. 7 ELS) perf 3.10.0-1160.137.1.el7, kernel 3.10.0-1160.137.1.el7, bpftool 3.10.0-1160.137.1.el7, python-perf 3.10.0-1160.137.1.el7, kernel-kdump 3.10.0-1160.137.1.el7, kernel-tools 3.10.0-1160.137.1.el7, +7 more Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debuginfo-common-ppc64 3.10.0-1160.137.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.137.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.137.1.el7
    fixed: vendor fix RHSA-2025:14748
  • Red Hat Enterprise Linux 10 kernel
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 d ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% 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

Affected products

  • Linux Linux

Classification

Weakness
  • CWE-1284 Improper Validation of Specified Quantity in Input
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.