CVE-2022-2639 Integer overflow in kernel
High 7.8
Published
Updated
Check this codebase for CVE-2022-2639 and fix it if it is affected.
What it is: CVE-2022-2639 is a high-severity vulnerability in Linux kernel, published on 1 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-2639 in the wild and no public exploit code.
Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2022-2639/ (Markdown: https://insights.sbomify.com/CVE-2022-2639/index.md)
A local attacker can exploit an integer coercion error in the Open vSwitch kernel module to cause an out-of-bounds write, leading to system crashes or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-2639?
CVE-2022-2639 is a high-severity vulnerability in Linux kernel, published on 1 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2022-2639?
It affects 2 products.
Linux distribution packages (40)
bpftool Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
bpftool-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-abi-whitelists Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-core Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug-core Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug-devel Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug-modules Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debug-modules-extra Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debuginfo-common-ppc64le Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-devel Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-doc Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-modules Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-modules-extra Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-tools Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-tools-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kernel-tools-libs Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
kpatch-patch-4_18_0-147_70_1 Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_70_1-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_70_1-debugsource Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_74_1 Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_74_1-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_74_1-debugsource Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-2.el8_1 |
kpatch-patch-4_18_0-147_76_1 Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
kpatch-patch-4_18_0-147_76_1-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
kpatch-patch-4_18_0-147_76_1-debugsource Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
kpatch-patch-4_18_0-147_77_1 Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
kpatch-patch-4_18_0-147_77_1-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
kpatch-patch-4_18_0-147_77_1-debugsource Red Hat:rhel_e4s:8.1::baseos | All versions | 0:1-1.el8_1 |
perf Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
perf-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
python3-perf Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
python3-perf-debuginfo Red Hat:rhel_e4s:8.1::baseos | All versions | 0:4.18.0-147.78.1.el8_1 |
bpftool Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.72.1.el8_4 |
bpftool-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.72.1.el8_4 |
kernel Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.72.1.el8_4 |
Products include Linux kernel, Redhat Enterprise Linux.
How do I fix CVE-2022-2639?
Apply the vendor's patch.
Is CVE-2022-2639 being exploited?
There is no known exploitation of CVE-2022-2639 in the wild and no public exploit code.
Public exploit code: 4 proofs of concept on GitHub.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-2639, GHSA-w6wh-qr7x-h932, OESA-2024-1384, RHSA-2022:8765, RHSA-2022:8767, RHSA-2022:8768 and 3 more.