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Fencer Vulns
medium 6.8

CVE-2024-0565 json

Kernel: cifs filesystem decryption improper input validation remote code execution vulnerability in function receive_encrypted_standard of client

published 2024-01-15 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-16358

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

An out-of-bounds memory read flaw was found in receive_encrypted_standard in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. This issue occurs due to integer underflow on the memcpy length, leading to a denial of service.

Patch / fix

  • Linux kernel 5.10.211, 5.15.150, 6.1.69, 6.6.8
  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-513.24.1.el8_9, 0:4.18.0-513.24.1.rt7.326.el8_9
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 0:4.18.0-372.95.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support 0:4.18.0-477.51.1.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-427.13.1.el9_4
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.59.1.el9_2, 0:5.14.0-284.59.1.rt14.344.el9_2
  • Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 0:4.18.0-372.95.1.el8_6
  • Red Hat RHOL-5.7-RHEL-8 v0.1.0-225, v0.1.0-527, v0.4.0-248, v0.28.1-57, v1.0.0-480, v1.1.0-228, v1.14.6-215, v2.9.6-15, v5.7.13-3, v5.7.13-7, v5.7.13-9, v5.7.13-12, v5.7.13-16, v5.7.13-19, v5.7.13-27, v5.8.1-471, v6.8.1-408, v6.8.1-431
  • linux Debian 12 6.1.69-1
  • linux Debian 14, Debian 13 6.6.8-1

debian advisories DEBIAN-CVE-2024-0565

  • linux Ubuntu 20.04 LTS 5.4.0-172.190
  • linux Ubuntu 22.04 LTS 5.15.0-97.107
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1119.129
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1055.60
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1123.132
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1052.60
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1051.56
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1066.71

ubuntu advisories UBUNTU-CVE-2024-0565

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 9 5.14.0-427.13.1.el9_4
  • rv RHEL 9 5.14.0-427.13.1.el9_4
  • perf RHEL 9 5.14.0-427.13.1.el9_4
  • rtla RHEL 9 5.14.0-427.13.1.el9_4
  • bpftool RHEL 9 7.3.0-427.13.1.el9_4
  • libperf RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.13.1.el9_4

red hat advisories RHSA-2024:2394RHSA-2024:1404RHSA-2024:1188RHSA-2024:1532RHSA-2024:1614RHSA-2024:1607

  • dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +4 more 5.14.21-150500.55.49.1
  • kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1

suse advisories SUSE-SU-2024:1318-1SUSE-SU-2024:1312-1SUSE-SU-2024:1299-1SUSE-SU-2024:1298-1SUSE-SU-2024:1292-1SUSE-SU-2024:1288-1

  • kernel AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.13.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.13.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.13.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.13.1.el9_4

almalinux advisories ALSA-2024:2394ALSA-2024:1607

  • kernel Rocky Linux 8 4.18.0-513.24.1.el8_9.cloud.0.1
  • kernel-rt Rocky Linux 8 4.18.0-513.24.1.rt7.326.el8_9
  • kernel Rocky Linux 8 4.18.0-513.24.1.el8_9

rocky linux advisories RXSA-2024:1607RLSA-2024:1614RLSA-2024:1607

  • kernel CBL-Mariner 2.0 5.15.153.1-1
  • hyperv-daemons CBL-Mariner 2.0 5.15.153.1-1
  • kernel Azure Linux 3.0 6.6.35.1-4

azure linux advisories AZL-33601AZL-34273AZL-34871

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2024-0565 updated cvss 6.8

kernel: CIFS Filesystem Decryption Improper Input Validation Remote Code Execution Vulnerability in function receive_encrypted_standard of client

  • 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: workaround, no fix available “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-513.24.1.el8_9, kernel-debuginfo-common-aarch64 4.18.0-513.24.1.el8_9, kernel-debuginfo-common-ppc64le 4.18.0-513.24.1.el8_9
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1607
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.95.1.el8_6
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1188
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.51.1.el8_8
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1404
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.59.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.59.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.59.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.59.1.el9_2
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1532
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.13.1.el9_4, perf 5.14.0-427.13.1.el9_4, rtla 5.14.0-427.13.1.el9_4, kernel-devel-matched 5.14.0-427.13.1.el9_4, kernel-64k-devel-matched 5.14.0-427.13.1.el9_4, kernel-debug-devel-matched 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2394
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.59.1.el9_2, rtla 5.14.0-284.59.1.el9_2, kernel-devel-matched 5.14.0-284.59.1.el9_2, kernel-64k-devel-matched 5.14.0-284.59.1.el9_2, kernel-debug-devel-matched 5.14.0-284.59.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.59.1.el9_2, +5 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1532
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-513.24.1.el8_9, kernel 4.18.0-513.24.1.el8_9, bpftool 4.18.0-513.24.1.el8_9, kernel-core 4.18.0-513.24.1.el8_9, kernel-tools 4.18.0-513.24.1.el8_9, python3-perf 4.18.0-513.24.1.el8_9, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1607
show 14 more
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.13.1.el9_4, kernel 5.14.0-427.13.1.el9_4, kernel-64k 5.14.0-427.13.1.el9_4, kernel-core 5.14.0-427.13.1.el9_4, kernel-tools 5.14.0-427.13.1.el9_4, python3-perf 5.14.0-427.13.1.el9_4, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2394
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.95.1.el8_6, kernel 4.18.0-372.95.1.el8_6, bpftool 4.18.0-372.95.1.el8_6, kernel-core 4.18.0-372.95.1.el8_6, kernel-tools 4.18.0-372.95.1.el8_6, python3-perf 4.18.0-372.95.1.el8_6, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1188
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.51.1.el8_8, kernel 4.18.0-477.51.1.el8_8, bpftool 4.18.0-477.51.1.el8_8, kernel-core 4.18.0-477.51.1.el8_8, kernel-tools 4.18.0-477.51.1.el8_8, python3-perf 4.18.0-477.51.1.el8_8, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1404
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.59.1.el9_2, kernel 5.14.0-284.59.1.el9_2, kernel-64k 5.14.0-284.59.1.el9_2, kernel-core 5.14.0-284.59.1.el9_2, kernel-tools 5.14.0-284.59.1.el9_2, python3-perf 5.14.0-284.59.1.el9_2, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1532
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.13.1.el9_4
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2394
  • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules-extra 4.18.0-513.24.1.rt7.326.el8_9, +2 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1614
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-kvm 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2394
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-core 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-modules 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-debug-core 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-modules-core 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-debug-modules 5.14.0-284.59.1.rt14.344.el9_2, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1533
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-kvm 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-core 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-modules 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-kvm 4.18.0-513.24.1.rt7.326.el8_9, kernel-rt-debug-core 4.18.0-513.24.1.rt7.326.el8_9, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1614
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-kvm 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-core 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-modules 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-debug-kvm 5.14.0-284.59.1.rt14.344.el9_2, kernel-rt-debug-core 5.14.0-284.59.1.rt14.344.el9_2, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1533
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, kernel-rt-modules-core 5.14.0-427.13.1.el9_4, kernel-rt-debug-modules 5.14.0-427.13.1.el9_4, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2394
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.95.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.95.1.el8_6
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:1188
  • Red Hat RHOL 5.7 for RHEL 8 openshift-logging/vector-rhel8 v0.28.1-57, openshift-logging/kibana6-rhel8 v6.8.1-431, openshift-logging/fluentd-rhel8 v1.14.6-215, openshift-logging/eventrouter-rhel8 v0.4.0-248, openshift-logging/logging-loki-rhel8 v2.9.6-15, openshift-logging/loki-rhel8-operator v5.7.13-12, +12 more
    fixed: vendor fix “To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2093
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.59.1.el9_2
    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
total
Assessed
18 mo ago

Exploit prediction

2.00% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.4 CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Linux kernel
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
  • Red Hat RHOL-5.7-RHEL-8
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)
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.