# CVE-2007-4573: Privilege escalation in n/a > Local attackers can gain privileges via out-of-bounds access in IA32 system call emulation on x86_64 Linux kernels. - **Severity:** High 7.2 (`AV:L/AC:L/Au:N/C:C/I:C/A:C`) - **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:** 24 Sep 2007 - **Updated:** 7 Aug 2024 - **Also known as:** GHSA-jqfp-qwq6-6w3h, RHSA-2007:0936, RHSA-2007:0937, RHSA-2007:0938 ## What is CVE-2007-4573? CVE-2007-4573 is a high-severity vulnerability in Linux kernel, published on 24 Sep 2007. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register. Weakness: CWE-264 ## Which versions are affected by CVE-2007-4573? It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `kernel` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-BOOT` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-debuginfo` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-doc` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-hugemem` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-hugemem-unsupported` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-smp` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-smp-unsupported` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-source` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel-unsupported` | Red Hat:enterprise_linux:3::as | All versions | 0:2.4.21-52.EL | | `kernel` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-BOOT` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-debuginfo` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-doc` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-hugemem` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-hugemem-unsupported` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-smp` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-smp-unsupported` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-source` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel-unsupported` | Red Hat:enterprise_linux:3::desktop | All versions | 0:2.4.21-52.EL | | `kernel` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-BOOT` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-debuginfo` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-doc` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-hugemem` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-hugemem-unsupported` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-smp` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-smp-unsupported` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-source` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel-unsupported` | Red Hat:enterprise_linux:3::es | All versions | 0:2.4.21-52.EL | | `kernel` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-BOOT` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-debuginfo` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-doc` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-hugemem` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-hugemem-unsupported` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-smp` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-smp-unsupported` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-source` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | | `kernel-unsupported` | Red Hat:enterprise_linux:3::ws | All versions | 0:2.4.21-52.EL | Products: Linux kernel. ## How do I fix CVE-2007-4573? Apply the vendor's patch. ## Is CVE-2007-4573 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-4573 exists. Public exploit code: - Linux Kernel 2.6.x - Ptrace Privilege Escalation (exploitdb) - Linux Kernel 2.4/2.6 (x86-64) - System Call Emulation Privilege Escalation (exploitdb) ## Other vulnerabilities in Linux kernel - [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild) - [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild) - [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild) - [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild) - [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2007-4573 and fix it if it is affected. What it is: CVE-2007-4573 is a high-severity vulnerability in Linux kernel, published on 24 Sep 2007. 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-2007-4573 exists. Affected product: Linux kernel. 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-2007-4573/ (Markdown: https://insights.sbomify.com/CVE-2007-4573/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2007-4573 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-4573 - OSV: https://osv.dev/vulnerability/CVE-2007-4573 --- From sbomify Insights: https://insights.sbomify.com/CVE-2007-4573/ Summaries are generated and may contain mistakes; the official description above is the record.