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Fencer Intel
high 8.2

CVE-2022-1012 json

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size.

published 2022-08-05 4 y ago modified 2026-10-14 26 d ago also EUVD-2022-24362

cvss
8.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.4%
EPSS 4.4% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.

Patch / fix

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
  • linux Debian 14, Debian 13, Debian 12 5.17.11-1

debian advisories DEBIAN-CVE-2022-1012

  • linux Ubuntu 18.04 LTS 4.15.0-194.205
  • linux Ubuntu 20.04 LTS 5.4.0-126.142
  • linux Ubuntu 22.04 LTS 5.15.0-47.51
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1142.154
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1085.92
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1019.23
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1089.97
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1017.23

ubuntu advisories UBUNTU-CVE-2022-1012

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

  • redhat-virtualization-host rhev hypervisor 4.4 4.5.2-202209140405_8.6
  • redhat-virtualization-host-image-update rhev hypervisor 4.4 4.5.2-202209140405_8.6
  • kernel RHEL 9 5.14.0-70.17.1.el9_0
  • perf RHEL 9 5.14.0-70.17.1.el9_0
  • bpftool RHEL 9 5.14.0-70.17.1.el9_0
  • kernel-core RHEL 9 5.14.0-70.17.1.el9_0
  • kernel-tools RHEL 9 5.14.0-70.17.1.el9_0
  • python3-perf RHEL 9 5.14.0-70.17.1.el9_0

red hat advisories RHSA-2022:6551RHSA-2022:5249RHSA-2022:5220RHSA-2022:5224RHSA-2022:5626RHSA-2022:5214

  • kernel-syms SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 5.3.18-150200.24.129.1
  • kernel-source SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 5.3.18-150200.24.129.1
  • kernel-default SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +8 more 5.3.18-150200.24.129.1
  • kernel-preempt SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 5.3.18-150200.24.129.1
  • kernel-obs-build SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +3 more 5.3.18-150200.24.129.1
  • kernel-default-base SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 5.3.18-150200.24.129.1.150200.9.61.1
  • kernel-syms SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.14-150100.197.123.1
  • kernel-source SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.14-150100.197.123.1

suse advisories SUSE-SU-2022:3450-1SUSE-SU-2022:3408-1SUSE-SU-2022:2629-1SUSE-SU-2022:2615-1SUSE-SU-2022:2549-1SUSE-SU-2022:2520-1

  • kernel-default openSUSE Leap Micro 5.2 5.3.18-150300.59.87.1
  • kernel-default-base openSUSE Leap Micro 5.2 5.3.18-150300.59.87.1.150300.18.50.2

opensuse advisories openSUSE-SU-2022:2549-1

  • kernel AlmaLinux 8 4.18.0-372.19.1.el8_6
  • perf AlmaLinux 8 4.18.0-372.19.1.el8_6
  • bpftool AlmaLinux 8 4.18.0-372.19.1.el8_6
  • kernel-core AlmaLinux 8 4.18.0-372.19.1.el8_6
  • kernel-tools AlmaLinux 8 4.18.0-372.19.1.el8_6
  • python3-perf AlmaLinux 8 4.18.0-372.19.1.el8_6
  • kernel-modules AlmaLinux 8 4.18.0-372.19.1.el8_6
  • kernel-debug-core AlmaLinux 8 4.18.0-372.19.1.el8_6

almalinux advisories ALSA-2022:5819ALSA-2022:5834ALSA-2022:5249ALSA-2022:5267

  • kernel-rt Rocky Linux 8 4.18.0-372.19.1.rt7.176.el8_6
  • kernel Rocky Linux 8 4.18.0-372.19.1.el8_6

rocky linux advisories RLSA-2022:5834RLSA-2022:5819

  • kernel CBL-Mariner 2.0 5.15.67.1-4

azure linux advisories AZL-10468

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

  • linux-lts Arch Linux 6.2-1
  • linux-hardened Arch Linux 6.2-1
  • linux-zen Arch Linux 6.2-1
  • linux Arch Linux 6.2-1

arch linux advisories AVG-2834AVG-2835AVG-2836AVG-2837

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-2022-1012 updated cvss 6.5

kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak

  • Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-70.17.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.17.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.17.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.17.1.el9_0
    fixed: vendor fix RHSA-2022:5249
  • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-debuginfo-common-x86_64 4.18.0-193.87.1.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.87.1.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.87.1.el8_2
    fixed: vendor fix RHSA-2022:5220
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-70.17.1.el9_0, kernel-devel-matched 5.14.0-70.17.1.el9_0, kernel-debug-devel-matched 5.14.0-70.17.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.17.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.17.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.17.1.el9_0, +2 more
    fixed: vendor fix RHSA-2022:5249
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-372.19.1.el8_6, kernel 4.18.0-372.19.1.el8_6, bpftool 4.18.0-372.19.1.el8_6, kernel-core 4.18.0-372.19.1.el8_6, kernel-tools 4.18.0-372.19.1.el8_6, python3-perf 4.18.0-372.19.1.el8_6, +15 more
    fixed: vendor fix RHSA-2022:5819
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-70.17.1.el9_0, bpftool 5.14.0-70.17.1.el9_0, kernel-core 5.14.0-70.17.1.el9_0, kernel-tools 5.14.0-70.17.1.el9_0, python3-perf 5.14.0-70.17.1.el9_0, kernel-modules 5.14.0-70.17.1.el9_0, +15 more
    fixed: vendor fix RHSA-2022:5249
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) perf 4.18.0-147.70.1.el8_1, kernel 4.18.0-147.70.1.el8_1, bpftool 4.18.0-147.70.1.el8_1, kernel-core 4.18.0-147.70.1.el8_1, kernel-tools 4.18.0-147.70.1.el8_1, python3-perf 4.18.0-147.70.1.el8_1, +9 more
    fixed: vendor fix RHSA-2022:5636
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) perf 4.18.0-193.87.1.el8_2, kernel 4.18.0-193.87.1.el8_2, bpftool 4.18.0-193.87.1.el8_2, kernel-core 4.18.0-193.87.1.el8_2, kernel-tools 4.18.0-193.87.1.el8_2, python3-perf 4.18.0-193.87.1.el8_2, +15 more
    fixed: vendor fix RHSA-2022:5220
  • Red Hat Enterprise Linux BaseOS EUS (v.8.4) perf 4.18.0-305.57.1.el8_4, kernel 4.18.0-305.57.1.el8_4, bpftool 4.18.0-305.57.1.el8_4, kernel-core 4.18.0-305.57.1.el8_4, kernel-tools 4.18.0-305.57.1.el8_4, python3-perf 4.18.0-305.57.1.el8_4, +15 more
    fixed: vendor fix RHSA-2022:5626
show 12 more
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-372.19.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.19.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.19.1.el8_6
    fixed: vendor fix RHSA-2022:5819
  • Red Hat Enterprise Linux CRB EUS (v.8.4) kernel-debuginfo-common-x86_64 4.18.0-305.57.1.el8_4, kernel-debuginfo-common-aarch64 4.18.0-305.57.1.el8_4, kernel-debuginfo-common-ppc64le 4.18.0-305.57.1.el8_4
    fixed: vendor fix RHSA-2022:5626
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-kvm 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-core 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-modules 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-kvm 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-core 4.18.0-372.19.1.rt7.176.el8_6, +4 more
    fixed: vendor fix RHSA-2022:5834
  • Red Hat Enterprise Linux NFV EUS (v.8.4) kernel-rt 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-kvm 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-core 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-modules 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-kvm 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-core 4.18.0-305.57.1.rt7.129.el8_4, +4 more
    fixed: vendor fix RHSA-2022:5633
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-core 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-modules 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-core 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-modules 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-modules-extra 5.14.0-70.17.1.rt21.89.el9_0, +2 more
    fixed: vendor fix RHSA-2022:5267
  • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-core 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-modules 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-core 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-modules 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-modules-extra 4.18.0-193.87.1.rt13.137.el8_2, +2 more
    fixed: vendor fix RHSA-2022:5224
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-kvm 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-core 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-modules 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-kvm 5.14.0-70.17.1.rt21.89.el9_0, kernel-rt-debug-core 5.14.0-70.17.1.rt21.89.el9_0, +4 more
    fixed: vendor fix RHSA-2022:5267
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-kvm 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-core 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-modules 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-kvm 4.18.0-193.87.1.rt13.137.el8_2, kernel-rt-debug-core 4.18.0-193.87.1.rt13.137.el8_2, +4 more
    fixed: vendor fix RHSA-2022:5224
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-core 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-modules 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-core 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-debug-modules 4.18.0-372.19.1.rt7.176.el8_6, kernel-rt-modules-extra 4.18.0-372.19.1.rt7.176.el8_6, +2 more
    fixed: vendor fix RHSA-2022:5834
  • Red Hat Enterprise Linux RT EUS (v.8.4) kernel-rt 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-core 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-modules 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-core 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-debug-modules 4.18.0-305.57.1.rt7.129.el8_4, kernel-rt-modules-extra 4.18.0-305.57.1.rt7.129.el8_4, +2 more
    fixed: vendor fix RHSA-2022:5633
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.19.1.el8_6, redhat-virtualization-host 4.5.2-202209140405_8.6, kernel-debuginfo-common-x86_64 4.18.0-372.19.1.el8_6, redhat-virtualization-host-image-update 4.5.2-202209140405_8.6
    fixed: vendor fix RHSA-2022:5819
  • 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 RHEL 8-based RHEV-H for RHEV 4 (build requirements) redhat-release-virtualization-host 4.5.2-1.el8ev, redhat-virtualization-host-productimg 4.5.2-1.el8, redhat-release-virtualization-host-content 4.5.2-1.el8ev, redhat-virtualization-host-image-update-placeholder 4.5.2-1.el8ev
    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 ICSA-23-194-04 updated cvss 8.2

Siemens SIMATIC MV500 Devices

  • Siemens SIMATIC MV540 H (6GF3540-0GE10) <V3.3.4 Siemens SIMATIC MV540 S (6GF3540-0CD10) <V3.3.4 Siemens SIMATIC MV550 H (6GF3550-0GE10) <V3.3.4 Siemens SIMATIC MV550 S (6GF3550-0CD10) <V3.3.4 Siemens SIMATIC MV560 U (6GF3560-0LE10) <V3.3.4 Siemens SIMATIC MV560 X (6GF3560-0HE10) <V3.3.4
    affected: fixed in V3.3.4 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-166-11 updated cvss 8.2

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

4.39% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

  • n/a Kernel
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime
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.