CVE-2026-78119

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espitafparse drivers/espi/espinpcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIVROUNDUPlen, 4 words into struct espitafpckt.src, a...

CVE-2026-78119 Out-of-bounds write in the Nuvoton NPCX eSPI Target-Attached-Flash receive path from an unvalidated host-supplied packet length

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espitafparse drivers/espi/espinpcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIVROUNDUPlen, 4 words into struct espitafpckt.src, a...

EUVD-2026-107486

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espitafparse drivers/espi/espinpcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIVROUNDUPlen, 4 words into struct espitafpckt.src, a...

CVE-2026-78119 Out-of-bounds write in the Nuvoton NPCX eSPI Target-Attached-Flash receive path from an unvalidated host-supplied packet length

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espitafparse drivers/espi/espinpcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIVROUNDUPlen, 4 words into struct espitafpckt.src, a...

CVE-2026-78119 Out-of-bounds write in the Nuvoton NPCX eSPI Target-Attached-Flash receive path from an unvalidated host-supplied packet length

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espitafparse drivers/espi/espinpcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIVROUNDUPlen, 4 words into struct espitafpckt.src, a...

CVE-2026-78119

The Nuvoton NPCX eSPI driver contains an out-of-bounds write vulnerability in the espi_taf_parse() function located in drivers/espi/espi_npcx.c. The driver fails to validate a 12-bit length field from the FLASHRXBUF FIFO header, leading to a copy operation that can exceed the 64-byte espi_taf_pck...

PT-2026-120778

The Nuvoton NPCX eSPI driver parses Target-Attached-Flash TAF requests in espi taf parse drivers/espi/espi npcx.c, taking the 12-bit length field directly out of the request header in the FLASHRXBUF FIFO. For write and RPMC OP1 requests it copied DIV ROUND UPlen, 4 words into struct espi taf...

Zephyr buffer error vulnerability

Versions of Zephyr 3.6.0 to 4.5.0 had a buffer error vulnerability. This vulnerability arises from the Nuvoton NPCX eSPI driver’s failure to validate the 12-bit length field when parsing TAF requests. As a result, out-of-bounds writes occur, and adjacent SRAM data is leaked into the SPI flash. Th...