Description

In the Linux kernel, the following vulnerability has been resolved: mtd: intel-dg: Fix accessing regions before setting nregions The regions array is counted by nregions, but it's set only after accessing it: [] UBSAN: array-index-out-of-bounds in drivers/mtd/devices/mtd_intel_dg.c:750:15 [] index 0 is out of range for type '<unknown> [*]' Fix it by also fixing an undesired behavior: the loop silently ignores ENOMEM and continues setting the other entries.

References 3

• git.kernel.org https://git.kernel.org/stable/c/721bd22bcf45a63ebd9bd0f478ef721b45cc5383
• git.kernel.org https://git.kernel.org/stable/c/779c59274d03cc5c07237a2c845dfb71cff77705
• git.kernel.org https://git.kernel.org/stable/c/d58fca8513414b15387460b14a7a0a30405b9c9e

Remediation