# CVE-2018-3665: Information disclosure in Intel Core-based microprocessors > Local attackers can infer sensitive data from other processes via speculative execution side channels on Intel Core-based microprocessors. - **Severity:** Medium 5.6 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N`) - **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:** Yes - **Published:** 21 Jun 2018 - **Updated:** 17 Sep 2024 - **Also known as:** ALPINE-CVE-2018-3665, DEBIAN-CVE-2018-3665, DSA-4232-1, GHSA-723g-x9c7-6562, RHSA-2018:1852, RHSA-2018:1944, SUSE-SU-2018:1821-1, SUSE-SU-2018:1849-1, SUSE-SU-2018:1940-1, SUSE-SU-2018:1942-1, SUSE-SU-2018:1943-1, SUSE-SU-2018:1944-1, SUSE-SU-2018:1945-1, SUSE-SU-2018:1946-1, SUSE-SU-2018:1947-1, SUSE-SU-2018:1948-1, SUSE-SU-2018:1949-1, SUSE-SU-2018:2048-1, SUSE-SU-2018:2086-1, SUSE-SU-2018:2087-1, SUSE-SU-2018:2088-1, SUSE-SU-2018:2090-1, SUSE-SU-2018:2091-1, SUSE-SU-2018:2093-1, SUSE-SU-2018:2094-1, SUSE-SU-2018:2095-1, SUSE-SU-2018:2096-1, SUSE-SU-2018:2097-1, SUSE-SU-2018:2098-1, SUSE-SU-2018:2099-1, SUSE-SU-2018:2100-1, SUSE-SU-2018:2101-1, SUSE-SU-2018:2102-1, SUSE-SU-2018:2103-1, SUSE-SU-2018:2104-1, SUSE-SU-2018:2105-1, SUSE-SU-2018:2106-1, SUSE-SU-2018:2107-1, SUSE-SU-2018:2108-1, SUSE-SU-2018:2109-1, SUSE-SU-2018:2110-1, SUSE-SU-2018:2111-1, SUSE-SU-2018:2112-1, SUSE-SU-2018:2113-1, SUSE-SU-2018:2114-1, SUSE-SU-2018:2115-1, SUSE-SU-2018:2248-1, SUSE-SU-2018:2250-1, SUSE-SU-2018:2254-1, SUSE-SU-2018:2255-1, SUSE-SU-2018:2262-1, SUSE-SU-2018:2263-1, SUSE-SU-2018:2264-1, SUSE-SU-2018:2266-1, SUSE-SU-2018:2267-1, SUSE-SU-2018:2268-1, SUSE-SU-2018:2269-1, SUSE-SU-2018:2270-1, SUSE-SU-2018:2271-1, UBUNTU-CVE-2018-3665 ## What is CVE-2018-3665? CVE-2018-3665 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 21 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel. Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) ## Which versions are affected by CVE-2018-3665? It affects 14 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `kernel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-abi-whitelists` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debuginfo-common-x86_64` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-doc` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-headers` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-libs` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-libs-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `perf` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `perf-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `python-perf` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `python-perf-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.3.3.el7 | | `kernel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-abi-whitelists` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debuginfo-common-x86_64` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-doc` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-headers` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-libs` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-tools-libs-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `perf` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `perf-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `python-perf` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `python-perf-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.3.3.el7 | | `kernel` | Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-abi-whitelists` | Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-bootwrapper` | Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.3.3.el7 | | `kernel-debug` | Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.3.3.el7 | Products: Canonical Ubuntu Linux, Citrix Xenserver, Debian Debian Linux, Freebsd Freebsd, Intel Core I3, Intel Core I5, Intel Core I7, Intel Core M, Intel Core M3, Intel Core M5, Intel Core M7, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Workstation. ## How do I fix CVE-2018-3665? Apply the vendor's patch. ## Is CVE-2018-3665 being exploited? There is no known exploitation of CVE-2018-3665 in the wild and no public exploit code. ## Other vulnerabilities in Canonical Ubuntu Linux - [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild) - [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild) - [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild) - [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild) - [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2018-3665 and fix it if it is affected. What it is: CVE-2018-3665 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 21 Jun 2018. 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-2018-3665 in the wild and no public exploit code. 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-2018-3665/ (Markdown: https://insights.sbomify.com/CVE-2018-3665/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-3665 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-3665 - OSV: https://osv.dev/vulnerability/CVE-2018-3665 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-3665/ Summaries are generated and may contain mistakes; the official description above is the record.