CVE-2022-0729 in vim
Summary
by MITRE • 02/23/2022
Use of Out-of-range Pointer Offset in GitHub repository vim/vim prior to 8.2.4440.
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Analysis
by VulDB Data Team • 03/30/2026
The vulnerability identified as CVE-2022-0729 represents a critical use of out-of-range pointer offset flaw within the vim text editor repository. This issue affects versions prior to 8.2.4440 and stems from improper validation of pointer arithmetic operations that can lead to memory corruption. The vulnerability manifests when the editor processes certain input sequences that trigger malformed pointer calculations during text manipulation operations. Such pointer miscalculations can result in accessing memory locations beyond the intended buffer boundaries, creating potential exploitation vectors for remote code execution or denial of service conditions.
The technical root cause of this vulnerability aligns with CWE-786, which specifically addresses the use of out-of-range pointer offsets in software systems. When vim processes text input containing crafted sequences, the pointer arithmetic calculations become invalid, causing the application to access memory regions that are not properly allocated or accessible. This flaw typically occurs during operations involving text editing, search functions, or buffer management where the software assumes certain memory layouts or buffer sizes that may not hold true under malicious input conditions. The vulnerability exploits the fundamental principle that pointer operations must remain within valid memory boundaries to prevent unauthorized memory access patterns.
The operational impact of CVE-2022-0729 extends significantly across various deployment scenarios where vim serves as a primary text editing tool. Attackers can potentially leverage this vulnerability through crafted input files, network-based attacks against vim-based applications, or by exploiting the editor's functionality in automated systems. The exploitation chain typically involves sending malicious input sequences that cause the editor to perform invalid pointer arithmetic, which can then be leveraged to execute arbitrary code with the privileges of the user running vim. This vulnerability affects not only direct vim usage but also applications that depend on vim's libraries or functionality, creating a broader attack surface. Organizations using vim in production environments, development workflows, or automated systems face elevated risk from this vulnerability, particularly those with limited security monitoring or patch management processes.
Mitigation strategies for CVE-2022-0729 primarily focus on immediate version upgrades to vim 8.2.4440 or later, which contain the necessary patches to address the out-of-range pointer offset issue. System administrators should prioritize patching affected systems and implementing automated vulnerability management processes to prevent similar issues from arising. Additional protective measures include implementing input validation controls, restricting vim execution in privileged contexts, and deploying memory protection mechanisms such as address space layout randomization and stack canaries. Security monitoring should include detection of unusual pointer behavior or memory access patterns that might indicate exploitation attempts. Organizations should also consider implementing sandboxing techniques for vim usage, particularly in environments where untrusted input processing occurs, and establish regular security assessments to identify potential vulnerabilities in text processing components. The ATT&CK framework categorizes this vulnerability under privilege escalation and code execution techniques, making it a significant concern for enterprise security teams implementing comprehensive threat detection strategies.