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Fencer Vulns
high 7.8

CVE-2022-2639 json

An integer coercion error was found in the openvswitch kernel module.

published 2022-09-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34886

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Patch / fix

  • linux linux_kernel 3.19, 4.5, 4.9.312, 4.14.277, 4.19.240, 5.4.191, 5.10.113, 5.15.36, 5.17.5
  • linux Debian 14, Debian 13, Debian 12 5.17.6-1

debian advisories DEBIAN-CVE-2022-2639

  • linux Ubuntu 18.04 LTS 4.15.0-189.200
  • linux Ubuntu 20.04 LTS 5.4.0-122.138
  • linux Ubuntu 22.04 LTS 5.15.0-41.44
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1137.148
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1081.88
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1015.19
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1084.92
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1013.18

ubuntu advisories UBUNTU-CVE-2022-2639

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 5.14.0-162.6.1.el9_1
  • perf RHEL 9 5.14.0-162.6.1.el9_1
  • bpftool RHEL 9 5.14.0-162.6.1.el9_1
  • kernel-core RHEL 9 5.14.0-162.6.1.el9_1
  • kernel-tools RHEL 9 5.14.0-162.6.1.el9_1
  • python3-perf RHEL 9 5.14.0-162.6.1.el9_1
  • kernel-modules RHEL 9 5.14.0-162.6.1.el9_1
  • kernel-zfcpdump RHEL 9 5.14.0-162.6.1.el9_1

red hat advisories RHSA-2022:8267RHSA-2022:7933RHSA-2022:9082RHSA-2022:8973RHSA-2022:8974RHSA-2022:7683

  • kernel-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
  • kernel-syms-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
  • kernel-rt_debug Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
  • kernel-source-rt Real Time Module 15 SP4, openSUSE Leap 15.4 5.14.21-150400.15.5.1
  • kernel-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.80.1
  • kernel-syms-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.80.1
  • kernel-source-azure SLE Module for Public Cloud 15 SP3, openSUSE Leap 15.3 5.3.18-150300.38.80.1
  • kernel-syms SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +6 more 5.3.18-150200.24.129.1

suse advisories SUSE-SU-2022:4617-1SUSE-SU-2022:3609-1SUSE-SU-2022:3450-1SUSE-SU-2022:3408-1SUSE-SU-2022:3293-1SUSE-SU-2022:3291-1

  • kernel-rt AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-debug-kvm AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-debug-core AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-debug-modules AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1
  • kernel-rt-modules-extra AlmaLinux 9 5.14.0-162.6.1.rt21.168.el9_1

almalinux advisories ALSA-2022:7933ALSA-2022:8267ALSA-2022:7444ALSA-2022:7683

  • kernel Rocky Linux 8 4.18.0-425.3.1.el8
  • kernel-rt Rocky Linux 8 4.18.0-425.3.1.rt7.213.el8

rocky linux advisories RLSA-2022:7683RLSA-2022:7444

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-2022-2639 updated cvss 7.8

kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-425.3.1.el8, kernel-debuginfo-common-aarch64 4.18.0-425.3.1.el8, kernel-debuginfo-common-ppc64le 4.18.0-425.3.1.el8
    fixed: vendor fix RHSA-2022:7683
  • Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-aarch64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-ppc64le 5.14.0-162.6.1.el9_1
    fixed: vendor fix RHSA-2022:8267
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.36.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.36.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.36.1.el8_6
    fixed: vendor fix RHSA-2022:8809
  • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.36.1.el9_0
    fixed: vendor fix RHSA-2022:8973
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-162.6.1.el9_1, kernel-devel-matched 5.14.0-162.6.1.el9_1, kernel-debug-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-zfcpdump-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, +2 more
    fixed: vendor fix RHSA-2022:8267
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.36.1.el9_0, kernel-devel-matched 5.14.0-70.36.1.el9_0, kernel-debug-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.36.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.36.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.36.1.el9_0, +2 more
    fixed: vendor fix RHSA-2022:8973
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-425.3.1.el8, kernel 4.18.0-425.3.1.el8, bpftool 4.18.0-425.3.1.el8, kernel-core 4.18.0-425.3.1.el8, kernel-tools 4.18.0-425.3.1.el8, python3-perf 4.18.0-425.3.1.el8, +15 more
    fixed: vendor fix RHSA-2022:7683
show 20 more
  • Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-162.6.1.el9_1, bpftool 5.14.0-162.6.1.el9_1, kernel-core 5.14.0-162.6.1.el9_1, kernel-tools 5.14.0-162.6.1.el9_1, python3-perf 5.14.0-162.6.1.el9_1, kernel-modules 5.14.0-162.6.1.el9_1, +14 more
    fixed: vendor fix RHSA-2022:8267
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.95.1.el8_2, kernel 4.18.0-193.95.1.el8_2, bpftool 4.18.0-193.95.1.el8_2, kernel-core 4.18.0-193.95.1.el8_2, kernel-tools 4.18.0-193.95.1.el8_2, python3-perf 4.18.0-193.95.1.el8_2, +8 more
    fixed: vendor fix RHSA-2022:8940
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) perf 4.18.0-147.78.1.el8_1, kernel 4.18.0-147.78.1.el8_1, bpftool 4.18.0-147.78.1.el8_1, kernel-core 4.18.0-147.78.1.el8_1, kernel-tools 4.18.0-147.78.1.el8_1, python3-perf 4.18.0-147.78.1.el8_1, +13 more
    fixed: vendor fix RHSA-2023:0058
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) perf 4.18.0-193.95.1.el8_2, kernel 4.18.0-193.95.1.el8_2, bpftool 4.18.0-193.95.1.el8_2, kernel-core 4.18.0-193.95.1.el8_2, kernel-tools 4.18.0-193.95.1.el8_2, python3-perf 4.18.0-193.95.1.el8_2, +14 more
    fixed: vendor fix RHSA-2022:8940
  • Red Hat Enterprise Linux BaseOS EUS (v.8.4) perf 4.18.0-305.72.1.el8_4, kernel 4.18.0-305.72.1.el8_4, bpftool 4.18.0-305.72.1.el8_4, kernel-core 4.18.0-305.72.1.el8_4, kernel-tools 4.18.0-305.72.1.el8_4, python3-perf 4.18.0-305.72.1.el8_4, +20 more
    fixed: vendor fix RHSA-2022:8767
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.36.1.el8_6, kernel 4.18.0-372.36.1.el8_6, bpftool 4.18.0-372.36.1.el8_6, kernel-core 4.18.0-372.36.1.el8_6, kernel-tools 4.18.0-372.36.1.el8_6, python3-perf 4.18.0-372.36.1.el8_6, +21 more
    fixed: vendor fix RHSA-2022:8809
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.36.1.el9_0, bpftool 5.14.0-70.36.1.el9_0, kernel-core 5.14.0-70.36.1.el9_0, kernel-tools 5.14.0-70.36.1.el9_0, python3-perf 5.14.0-70.36.1.el9_0, kernel-modules 5.14.0-70.36.1.el9_0, +19 more
    fixed: vendor fix RHSA-2022:8973
  • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) perf 4.18.0-193.95.1.el8_2, kernel 4.18.0-193.95.1.el8_2, bpftool 4.18.0-193.95.1.el8_2, kernel-core 4.18.0-193.95.1.el8_2, kernel-tools 4.18.0-193.95.1.el8_2, python3-perf 4.18.0-193.95.1.el8_2, +8 more
    fixed: vendor fix RHSA-2022:8940
  • Red Hat Enterprise Linux CRB EUS (v.8.4) kernel-debuginfo-common-x86_64 4.18.0-305.72.1.el8_4, kernel-debuginfo-common-aarch64 4.18.0-305.72.1.el8_4, kernel-debuginfo-common-ppc64le 4.18.0-305.72.1.el8_4
    fixed: vendor fix RHSA-2022:8767
  • Red Hat Enterprise Linux NFV EUS (v.8.4) kernel-rt 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-kvm 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-core 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-modules 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-debug-kvm 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-debug-core 4.18.0-305.72.1.rt7.144.el8_4, +4 more
    fixed: vendor fix RHSA-2022:8765
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-425.3.1.rt7.213.el8, kernel-rt-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules-extra 4.18.0-425.3.1.rt7.213.el8, +2 more
    fixed: vendor fix RHSA-2022:7444
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules-extra 5.14.0-162.6.1.rt21.168.el9_1, +2 more
    fixed: vendor fix RHSA-2022:7933
  • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules-extra 5.14.0-70.36.1.rt21.108.el9_0, +2 more
    fixed: vendor fix RHSA-2022:8974
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-425.3.1.rt7.213.el8, kernel-rt-kvm 4.18.0-425.3.1.rt7.213.el8, kernel-rt-core 4.18.0-425.3.1.rt7.213.el8, kernel-rt-modules 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-kvm 4.18.0-425.3.1.rt7.213.el8, kernel-rt-debug-core 4.18.0-425.3.1.rt7.213.el8, +4 more
    fixed: vendor fix RHSA-2022:7444
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, +4 more
    fixed: vendor fix RHSA-2022:7933
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-core 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-modules 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-kvm 5.14.0-70.36.1.rt21.108.el9_0, kernel-rt-debug-core 5.14.0-70.36.1.rt21.108.el9_0, +4 more
    fixed: vendor fix RHSA-2022:8974
  • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-kvm 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-core 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-modules 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-debug-kvm 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-debug-core 4.18.0-193.95.1.rt13.146.el8_2, +4 more Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-core 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-modules 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-debug-core 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-debug-modules 4.18.0-193.95.1.rt13.146.el8_2, kernel-rt-modules-extra 4.18.0-193.95.1.rt13.146.el8_2, +2 more
    fixed: vendor fix RHSA-2022:8941
  • Red Hat Enterprise Linux RT EUS (v.8.4) kernel-rt 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-core 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-modules 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-debug-core 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-debug-modules 4.18.0-305.72.1.rt7.144.el8_4, kernel-rt-modules-extra 4.18.0-305.72.1.rt7.144.el8_4, +2 more
    fixed: vendor fix RHSA-2022:8765
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.36.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.36.1.el8_6
    fixed: vendor fix RHSA-2022:8809
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    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-23-075-01 updated cvss 7.8

Siemens SCALANCE, RUGGEDCOM Third-Party

  • Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2) <V7.2
    +14 more products
    Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 (6GK5615-0AA00-2AA2) <V7.2 Siemens SCALANCE S615 EEC (6GK5615-0AA01-2AA2) <V7.2
    affected: fixed in V7.2 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

Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90f8 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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

  • n/a kernel

Classification

Weakness
  • CWE-192 Integer Coercion Error
  • CWE-681 Incorrect Conversion between Numeric Types
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.