CVE-2022-2588 Use after free in linux
Medium 5.3
Published
Updated
Check this codebase for CVE-2022-2588 and fix it if it is affected.
What it is: CVE-2022-2588 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 8 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-2588 exists.
Affected product: Canonical Ubuntu 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-2022-2588/ (Markdown: https://insights.sbomify.com/CVE-2022-2588/index.md)
A use-after-free flaw in the Linux kernel cls_route filter allows local attackers to execute arbitrary code 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-2022-2588?
CVE-2022-2588 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 8 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
Which versions are affected by CVE-2022-2588?
It affects 2 products.
Linux distribution packages (40)
kpatch-patch-3_10_0-1160_62_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-3.el7 |
kpatch-patch-3_10_0-1160_62_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-3.el7 |
kpatch-patch-3_10_0-1160_66_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_66_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-2.el7 |
kpatch-patch-3_10_0-1160_71_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kpatch-patch-3_10_0-1160_71_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kpatch-patch-3_10_0-1160_76_1 Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kpatch-patch-3_10_0-1160_76_1-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1-1.el7 |
kpatch-patch-4_18_0-372_13_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_13_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_13_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_16_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_16_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_16_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-2.el8_6 |
kpatch-patch-4_18_0-372_19_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_19_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_19_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_26_1 Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_26_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-1.el8_6 |
kpatch-patch-4_18_0-372_26_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 | 0:1-3.el8 |
kpatch-patch-4_18_0-372_9_1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1-3.el8 |
kpatch-patch-4_18_0-372_9_1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:1-3.el8 |
kernel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-debug Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-doc Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-tools Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
python-perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.106.1.el7 |
Products include Canonical Ubuntu Linux, Linux kernel.
How do I fix CVE-2022-2588?
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-2022-2588 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-2588 exists.
Public exploit code: 9 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as AZL-33261, DEBIAN-CVE-2022-2588, RHSA-2022:6875, RHSA-2022:6978, RHSA-2022:7137, RHSA-2022:7146 and 8 more.