[PATCH] mtd: jedec_probe: fix shift-out-of-bounds UB in JEDEC ID masking
Miquel Raynal
miquel.raynal at bootlin.com
Thu Jan 22 06:08:58 PST 2026
On Wed, 21 Jan 2026 20:32:50 -0500, Chenxi Hou wrote:
> UBSAN reports shift-out-of-bounds in jedec_read_mfr() and jedec_read_id():
>
> UBSAN: shift-out-of-bounds in drivers/mtd/chips/jedec_probe.c:1924:13
> shift exponent 32 is too large for 32-bit type 'int'
> UBSAN: shift-out-of-bounds in drivers/mtd/chips/jedec_probe.c:1940:12
> shift exponent 32 is too large for 32-bit type 'int'
>
> [...]
Applied to mtd/next, thanks!
[1/1] mtd: jedec_probe: fix shift-out-of-bounds UB in JEDEC ID masking
commit: 2b14660c1caf0b67adf99428a225f71ed653437d
Patche(s) should be available on mtd/linux.git and will be
part of the next PR (provided that no robot complains by then).
Kind regards,
Miquèl
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