CVE-2022-1158 Use after free in kernel
High 7.8
Published
Updated
Check this codebase for CVE-2022-1158 and fix it if it is affected.
What it is: CVE-2022-1158 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 5 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-2022-1158 in the wild and no public exploit code.
Affected product: Fedoraproject Fedora. 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-2022-1158/ (Markdown: https://insights.sbomify.com/CVE-2022-1158/index.md)
Unprivileged local users can corrupt kernel memory via KVM page table flaws, causing denial of service or potential 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-2022-1158?
CVE-2022-1158 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 5 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 KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.
Weakness: CWE-416
Which versions are affected by CVE-2022-1158?
It affects 3 products.
Linux distribution packages (40)
bpftool Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
bpftool-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-abi-stablelists Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-core Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug-core Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug-devel Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug-modules Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debug-modules-extra Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debuginfo-common-aarch64 Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debuginfo-common-ppc64le Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debuginfo-common-s390x Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-devel Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-doc Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-modules Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-modules-extra Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-tools Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-tools-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-tools-libs Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump-core Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump-devel Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump-modules Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kernel-zfcpdump-modules-extra Red Hat:rhel_eus:8.4::baseos | All versions | 0:4.18.0-305.71.1.el8_4 |
kpatch-patch-4_18_0-305_49_1 Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-3.el8_4 |
kpatch-patch-4_18_0-305_49_1-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-3.el8_4 |
kpatch-patch-4_18_0-305_49_1-debugsource Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-3.el8_4 |
kpatch-patch-4_18_0-305_57_1 Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_57_1-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_57_1-debugsource Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_62_1 Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_62_1-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_62_1-debugsource Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-2.el8_4 |
kpatch-patch-4_18_0-305_65_1 Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-1.el8_4 |
kpatch-patch-4_18_0-305_65_1-debuginfo Red Hat:rhel_eus:8.4::baseos | All versions | 0:1-1.el8_4 |
Products include Fedoraproject Fedora, Linux kernel, Redhat Enterprise Linux.
How do I fix CVE-2022-1158?
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-2022-1158 being exploited?
There is no known exploitation of CVE-2022-1158 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as AZL-10540, DEBIAN-CVE-2022-1158, RHSA-2022:8673, RHSA-2022:8685, RHSA-2022:8686, SUSE-SU-2022:1571-1 and 2 more.