Skip to content
Fencer Vulns
high 7.1

CVE-2023-52626 json

net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context

published 2024-03-26 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57250

cvss
7.1
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 14%
public exploits
0
none known

Summary

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

net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context

Indirection (*) is of lower precedence than postfix increment (++). Logic in napi_poll context would cause an out-of-bound read by first increment the pointer address by byte address space and then dereference the value. Rather, the intended logic was to dereference first and then increment the underlying value.

Patch / fix

  • Linux Linux 6.6, 6.6.15, 6.7.3, 6.8
  • linux Debian 14, Debian 13 6.6.15-1

debian advisories DEBIAN-CVE-2023-52626

  • linux-gcp-6.5 Ubuntu 22.04 LTS 6.5.0-1022.24~22.04.1
  • linux-hwe-6.5 Ubuntu 22.04 LTS 6.5.0-41.41~22.04.2
  • linux-oem-6.5 Ubuntu 22.04 LTS 6.5.0-1024.25
  • linux-azure-6.5 Ubuntu 22.04 LTS 6.5.0-1022.23~22.04.1
  • linux-riscv-6.5 Ubuntu 22.04 LTS 6.5.0-40.40.1~22.04.1
  • linux-nvidia-6.5 Ubuntu 22.04 LTS 6.5.0-1021.22
  • linux-oracle-6.5 Ubuntu 22.04 LTS 6.5.0-1024.24~22.04.1
  • linux-starfive-6.5 Ubuntu 22.04 LTS 6.5.0-1015.16~22.04.1

ubuntu advisories UBUNTU-CVE-2023-52626

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-2024:4352RHSA-2024:4349

  • 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-2023-52626 updated cvss 6.0

kernel: net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context

  • 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 planned “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.”
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:4349
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:4349
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:4349
show 3 more
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:4349
  • 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 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

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.