Parted Heap Overflow in FAT32 Image Processing (DoS)
CVE-2026-89085 Published on October 16, 2026
Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image
A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.
Vulnerability Analysis
CVE-2026-89085 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and a high impact on availability.
Timeline
Reported to Red Hat.
Made public. 133 days later.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-89085 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-89085
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