CVE-2017-9527
HighSummary
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.
Risk Assessment
Organizations may experience application downtime and potential data loss due to attacks exploiting this vulnerability.
Recommendation
It is recommended to update mruby to the latest version to mitigate the risks associated with this vulnerability.
Other vulnerabilities in mruby
See all- CVE-2026-79590Medium
A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source file that triggers the parser to pass a NULL pointer to string handling functions, resulting in undefined behavior and application crash.
- CVE-2022-4996Medium
A flaw has been found in mruby 3.1.0. The function udiv in bigint.c is affected. Executing a manipulation can lead to floating point comparison with incorrect operator. The attack can be launched remotely, and the exploit has been published.
- CVE-2025-13120Medium
In mruby up to 3.4.0, the sort_cmp function in src/array.c contains a use-after-free vulnerability that can be exploited locally. The exploit has been publicly disclosed.
- CVE-2025-12875Medium
A weakness has been identified in mruby 3.4.0 affecting the ary_fill_exec function in mrbgems/mruby-array-ext/src/array.c. Manipulating the start/length arguments can lead to an out-of-bounds write. The attack requires local access, the exploit is publicly available, and the fix is commit 93619f06dd378db6766666b30c08978311c7ec94.
Original NVD description (English source)
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS