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Fencer Vulns
high 7.8

CVE-2023-52667 json

net/mlx5e: fix a potential double-free in fs_any_create_groups

published 2024-05-17 2 y ago modified 2026-08-05 3 mo ago also EUVD-2023-57291

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

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

net/mlx5e: fix a potential double-free in fs_any_create_groups

When kcalloc() for ft->g succeeds but kvzalloc() for in fails, fs_any_create_groups() will free ft->g. However, its caller fs_any_create_table() will free ft->g again through calling mlx5e_destroy_flow_table(), which will lead to a double-free. Fix this by setting ft->g to NULL in fs_any_create_groups().

Patch / fix

  • Linux Linux 5.15.149, 6.1.76, 6.6.15, 6.7.3, 6.8
  • linux Debian 12 6.1.76-1
  • linux Debian 14, Debian 13 6.6.15-1

debian advisories DEBIAN-CVE-2023-52667

  • linux Ubuntu 22.04 LTS 5.15.0-106.116
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1061.67
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1059.67
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1058.63
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1054.57
  • linux-kvm Ubuntu 22.04 LTS 5.15.0-1058.63
  • linux-azure Ubuntu 22.04 LTS 5.15.0-1063.72
  • linux-gkeop Ubuntu 22.04 LTS 5.15.0-1044.51

ubuntu advisories UBUNTU-CVE-2023-52667

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 4.18.0-553.8.1.el8_10
  • perf RHEL 8 4.18.0-553.8.1.el8_10
  • bpftool RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-core RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-tools RHEL 8 4.18.0-553.8.1.el8_10
  • python3-perf RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-modules RHEL 8 4.18.0-553.8.1.el8_10
  • kernel-zfcpdump RHEL 8 4.18.0-553.8.1.el8_10

red hat advisories RHSA-2024:4211RHSA-2024:4902RHSA-2024:4740RHSA-2024:4352RHSA-2024:4349RHSA-2024:3854

  • kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-25.1
  • kernel-livepatch-MICRO-6-0-RT_Update_5 Linux Micro 6.1, Linux Micro 6.0 1-1.1
  • kernel-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source Linux Micro 6.0 6.4.0-18.1
  • kernel-default Linux Micro 6.0 6.4.0-18.1
  • kernel-kvmsmall Linux Micro 6.0 6.4.0-18.1

suse advisories SUSE-SU-2025:20166-1SUSE-SU-2025:20249-1SUSE-SU-2025:20028-1SUSE-SU-2025:20008-1SUSE-SU-2024:2973-1SUSE-SU-2024:2939-1

  • kernel AlmaLinux 9 5.14.0-427.24.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.24.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.24.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.24.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.24.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.24.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.24.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.24.1.el9_4

almalinux advisories ALSA-2024:4349ALSA-2024:4352ALSA-2024:4211

  • kernel Rocky Linux 9 5.14.0-427.24.1.el9_4.cloud.3.0
  • kernel Rocky Linux 9 5.14.0-427.24.1.el9_4
  • kernel-rt Rocky Linux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel Rocky Linux 8 4.18.0-553.8.1.el8_10

rocky linux advisories RXSA-2024:4349RLSA-2024:4349RLSA-2024:4352RLSA-2024:4211

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-2023-52667 updated cvss 5.5

kernel: net/mlx5e: fix a potential double-free in fs_any_create_groups

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “To mitigate this issue, prevent module mlx5_core 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 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 mlx5_core 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 EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.64.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.64.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.64.1.el8_8
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4740
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.69.1.el9_2
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:3855
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.24.1.el9_4, perf 5.14.0-427.24.1.el9_4, rtla 5.14.0-427.24.1.el9_4, kernel-devel-matched 5.14.0-427.24.1.el9_4, kernel-64k-devel-matched 5.14.0-427.24.1.el9_4, kernel-debug-devel-matched 5.14.0-427.24.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4349
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.69.1.el9_2, rtla 5.14.0-284.69.1.el9_2, kernel-devel-matched 5.14.0-284.69.1.el9_2, kernel-64k-devel-matched 5.14.0-284.69.1.el9_2, kernel-debug-devel-matched 5.14.0-284.69.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.69.1.el9_2, +5 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:3855
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.8.1.el8_10, kernel 4.18.0-553.8.1.el8_10, bpftool 4.18.0-553.8.1.el8_10, kernel-core 4.18.0-553.8.1.el8_10, kernel-tools 4.18.0-553.8.1.el8_10, python3-perf 4.18.0-553.8.1.el8_10, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4211
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.24.1.el9_4, kernel 5.14.0-427.24.1.el9_4, kernel-64k 5.14.0-427.24.1.el9_4, kernel-core 5.14.0-427.24.1.el9_4, kernel-tools 5.14.0-427.24.1.el9_4, python3-perf 5.14.0-427.24.1.el9_4, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4349
show 12 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.113.1.el8_6, kernel 4.18.0-372.113.1.el8_6, bpftool 4.18.0-372.113.1.el8_6, kernel-core 4.18.0-372.113.1.el8_6, kernel-tools 4.18.0-372.113.1.el8_6, python3-perf 4.18.0-372.113.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.113.1.el8_6, kernel 4.18.0-372.113.1.el8_6, bpftool 4.18.0-372.113.1.el8_6, kernel-core 4.18.0-372.113.1.el8_6, kernel-tools 4.18.0-372.113.1.el8_6, python3-perf 4.18.0-372.113.1.el8_6, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4902
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.64.1.el8_8, kernel 4.18.0-477.64.1.el8_8, bpftool 4.18.0-477.64.1.el8_8, kernel-core 4.18.0-477.64.1.el8_8, kernel-tools 4.18.0-477.64.1.el8_8, python3-perf 4.18.0-477.64.1.el8_8, +15 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4740
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.69.1.el9_2, kernel 5.14.0-284.69.1.el9_2, kernel-64k 5.14.0-284.69.1.el9_2, kernel-core 5.14.0-284.69.1.el9_2, kernel-tools 5.14.0-284.69.1.el9_2, python3-perf 5.14.0-284.69.1.el9_2, +28 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:3855
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.113.1.el8_6, kernel 4.18.0-372.113.1.el8_6, bpftool 4.18.0-372.113.1.el8_6, kernel-core 4.18.0-372.113.1.el8_6, kernel-tools 4.18.0-372.113.1.el8_6, python3-perf 4.18.0-372.113.1.el8_6, +8 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4902
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.8.1.el8_10
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4211
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.24.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.24.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.24.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.24.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.24.1.el9_4
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4349
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4352
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.24.1.el9_4, kernel-rt-kvm 5.14.0-427.24.1.el9_4, kernel-rt-core 5.14.0-427.24.1.el9_4, kernel-rt-modules 5.14.0-427.24.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.24.1.el9_4, kernel-rt-debug-core 5.14.0-427.24.1.el9_4, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4349
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-modules 5.14.0-284.69.1.rt14.354.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-modules 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-kvm 5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-core 5.14.0-284.69.1.rt14.354.el9_2, +6 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:3854
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules-extra 4.18.0-553.8.1.rt7.349.el8_10, +2 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4352
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.24.1.el9_4, kernel-rt-core 5.14.0-427.24.1.el9_4, kernel-rt-modules 5.14.0-427.24.1.el9_4, kernel-rt-debug-core 5.14.0-427.24.1.el9_4, kernel-rt-modules-core 5.14.0-427.24.1.el9_4, kernel-rt-debug-modules 5.14.0-427.24.1.el9_4, +4 more
    fixed: vendor fix “To mitigate this issue, prevent module mlx5_core 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-2024:4349
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.69.1.el9_2 Red Hat Enterprise Linux BaseOS (v. 8) kernel-headers 4.18.0-553.8.1.el8_10, kernel-cross-headers 4.18.0-553.8.1.el8_10
    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
2 y ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

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.