CVE-2022-0480 Denial of service in kernel
Medium 5.5
Published
Updated
Check this codebase for CVE-2022-0480 and fix it if it is affected.
What it is: CVE-2022-0480 is a medium-severity denial of service vulnerability in Linux kernel, published on 29 Aug 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-2022-0480 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-2022-0480/ (Markdown: https://insights.sbomify.com/CVE-2022-0480/index.md)
A flaw in the Linux kernel allows attackers to exhaust host memory by bypassing POSIX file lock limits, causing denial of service.
- 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-2022-0480?
CVE-2022-0480 is a medium-severity denial of service vulnerability in Linux kernel, published on 29 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the filelock_init in fs/locks.c function in the Linux kernel. This issue can lead to host memory exhaustion due to memcg not limiting the number of Portable Operating System Interface (POSIX) file locks.
Weakness: CWE-770
Which versions are affected by CVE-2022-0480?
It affects 2 products.
Linux distribution packages (40)
bpftool-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:7.0.0-284.57.1.el9_2 |
kernel-64k-debug-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-devel Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-devel-matched Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-devel Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-devel-matched Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debug-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debug-devel Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debug-devel-matched Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debuginfo-common-aarch64 Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debuginfo-common-ppc64le Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debuginfo-common-s390x Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-devel Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-devel-matched Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-tools-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-zfcpdump-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-zfcpdump-devel Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-zfcpdump-devel-matched Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
perf Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
perf-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
python3-perf-debuginfo Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
rtla Red Hat:rhel_eus:9.2::appstream | All versions | 0:5.14.0-284.57.1.el9_2 |
bpftool Red Hat:rhel_eus:9.2::baseos | All versions | 0:7.0.0-284.57.1.el9_2 |
bpftool-debuginfo Red Hat:rhel_eus:9.2::baseos | All versions | 0:7.0.0-284.57.1.el9_2 |
kernel Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-core Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-core Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-debuginfo Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-modules Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-modules-core Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debug-modules-extra Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-debuginfo Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-modules Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-modules-core Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
kernel-64k-modules-extra Red Hat:rhel_eus:9.2::baseos | All versions | 0:5.14.0-284.57.1.el9_2 |
Products include Linux kernel, Redhat Enterprise Linux.
How do I fix CVE-2022-0480?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-0480 being exploited?
There is no known exploitation of CVE-2022-0480 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-0480, GHSA-gjf9-j6hw-q3hj, RHSA-2024:1303, RHSA-2024:1304, ROOT-OS-DEBIAN-11-CVE-2022-0480, ROOT-OS-UBUNTU-2204-CVE-2022-0480 and 2 more.