fix: multiple memcpy calls in the fat32 driver (ff in ff.c#7
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orbisai0security wants to merge 1 commit into
Open
fix: multiple memcpy calls in the fat32 driver (ff in ff.c#7orbisai0security wants to merge 1 commit into
orbisai0security wants to merge 1 commit into
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Automated security fix generated by Orbis Security AI
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Summary
Fix critical severity security issue in
reference/drivers/fat32/source/ff.c.Vulnerability
V-001reference/drivers/fat32/source/ff.c:2024Description: Multiple memcpy calls in the FAT32 driver (ff.c) copy data from filesystem structures into fixed-size buffers without independently verifying that the source length fits within the destination buffer. At line 2024, 11 bytes are copied for a Short File Name (SFN) without checking destination size. At lines 2160/2171, SZDIRE-sized directory blocks are copied into dirb without validating the offset. At lines 4052/4056, sector-sized chunks are copied into rbuff using attacker-controlled sector offsets derived from fs->winsect and fp->sect. A crafted FAT32 image can manipulate these fields to cause out-of-bounds writes.
Changes
reference/drivers/fat32/source/ff.cVerification
Automated security fix by OrbisAI Security