CVE-2022-32250 Use after free in n/a
High 7.8
Published
Updated
Check this codebase for CVE-2022-32250 and fix it if it is affected.
What it is: CVE-2022-32250 is a high-severity use after free vulnerability in Debian Debian Linux, published on 2 Jun 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-2022-32250 in the wild and no public exploit code.
Affected product: Debian Debian Linux. 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-2022-32250/ (Markdown: https://insights.sbomify.com/CVE-2022-32250/index.md)
A local user can escalate privileges to root via a use-after-free in the Linux kernel netfilter API.
- 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-2022-32250?
CVE-2022-32250 is a high-severity use after free vulnerability in Debian Debian Linux, published on 2 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.
Weakness: CWE-416
Which versions are affected by CVE-2022-32250?
It affects 8 products.
Linux distribution packages (40)
kpatch-patch-4_18_0-372_13_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_13_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_13_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_16_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_16_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_16_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_9_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8 |
kpatch-patch-4_18_0-372_9_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8 |
kpatch-patch-4_18_0-372_9_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8 |
kernel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-debug Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-doc Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-tools Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
python-perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.104.1.el7 |
bpftool Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-debug Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-doc Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-tools Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.95.1.el7 |
Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware and 2 more.
How do I fix CVE-2022-32250?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-32250 being exploited?
There is no known exploitation of CVE-2022-32250 in the wild and no public exploit code.
Public exploit code: 8 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-9879, CVE-2022-1966, DEBIAN-CVE-2022-32250, GHSA-rv6g-4442-j26r, RHSA-2022:5641, RHSA-2022:5648 and 7 more.