# CVE-2023-35001: Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability > A local attacker with CAP_NET_ADMIN can trigger out-of-bounds read/write in nftables, potentially leading to code execution or privilege escalation. - **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`) - **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:** 5 Jul 2023 - **Updated:** 14 Oct 2026 - **Also known as:** DEBIAN-CVE-2023-35001, GHSA-mw8f-fcpv-j495, RHSA-2023:5414, RHSA-2023:7243, UBUNTU-CVE-2023-35001 ## What is CVE-2023-35001? CVE-2023-35001 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace Weakness: CWE-787 (Out-of-bounds Write) ## Which versions are affected by CVE-2023-35001? It affects 8 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `bpftool` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-abi-whitelists` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-debug` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-debug-debuginfo` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-debug-devel` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-debuginfo` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-debuginfo-common-x86_64` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-devel` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-doc` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-tools` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-tools-debuginfo` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-tools-libs` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `kernel-tools-libs-devel` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `perf` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `perf-debuginfo` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `python-perf` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `python-perf-debuginfo` | Red Hat:rhel_aus:7.6::server | All versions | 0:3.10.0-957.106.1.el7 | | `bpftool` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `bpftool-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-abi-whitelists` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-debug` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-debug-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-debug-devel` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-debuginfo-common-x86_64` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-devel` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-doc` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-tools` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-tools-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-tools-libs` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `kernel-tools-libs-devel` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `perf` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `perf-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `python-perf` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | | `python-perf-debuginfo` | Red Hat:rhel_aus:7.7::server | All versions | 0:3.10.0-1062.80.1.el7 | Products: Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp H300s, Netapp H410c, Netapp H410s, Netapp H500s, Netapp H700s. ## How do I fix CVE-2023-35001? Apply the vendor's patch. ## Is CVE-2023-35001 being exploited? There is no known exploitation of CVE-2023-35001 in the wild and no public exploit code. Public exploit code: - Pwn2Own Vancouver 2023 Ubuntu LPE exploit (github_poc): https://github.com/synacktiv/CVE-2023-35001 - nftables oob read/write exploit (CVE-2023-35001) (github_poc): https://github.com/syedhafiz1234/nftables-oob-read-write-exploit-CVE-2023-35001- - Exploit CVE-2023-35001 (github_poc): https://github.com/mrbrelax/Exploit_CVE-2023-35001 ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2023-35001 and fix it if it is affected. What it is: CVE-2023-35001 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 Jul 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-2023-35001 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-2023-35001/ (Markdown: https://insights.sbomify.com/CVE-2023-35001/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2023-35001 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-35001 - OSV: https://osv.dev/vulnerability/CVE-2023-35001 --- From sbomify Insights: https://insights.sbomify.com/CVE-2023-35001/ Summaries are generated and may contain mistakes; the official description above is the record.