CVE-2022-4378 Memory corruption in kernel
High 7.8
Published
Updated
Check this codebase for CVE-2022-4378 and fix it if it is affected.
What it is: CVE-2022-4378 is a high-severity memory corruption vulnerability in Linux kernel, published on 5 Jan 2023. 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-2022-4378 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-2022-4378/ (Markdown: https://insights.sbomify.com/CVE-2022-4378/index.md)
A local attacker can exploit a stack overflow in the Linux kernel SYSCTL subsystem to crash the system or escalate privileges.
- 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-2022-4378?
CVE-2022-4378 is a high-severity memory corruption vulnerability in Linux kernel, published on 5 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Which versions are affected by CVE-2022-4378?
It affects 1 product.
Linux distribution packages (40)
kpatch-patch-3_10_0-1160_76_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-3.el7 |
kpatch-patch-3_10_0-1160_76_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-3.el7 |
kpatch-patch-3_10_0-1160_80_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_80_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_81_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_81_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_83_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kpatch-patch-3_10_0-1160_83_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kernel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-debug Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-doc Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-tools Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
python-perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.107.1.el7 |
bpftool Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-debug Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-doc Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-tools Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
perf Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.100.1.el7 |
Products include Linux kernel.
How do I fix CVE-2022-4378?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-4378 being exploited?
There is no known exploitation of CVE-2022-4378 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-4378, GHSA-v2c8-m646-2q5c, RHSA-2023:0944, RHSA-2023:0945, RHSA-2023:1101, RHSA-2023:1103 and 7 more.