mtd: intel-dg: Fix accessing regions before setting nregions

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Summary

CVECVE-2026-45896
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:03 UTC
Updated2026-05-27 14:48:31 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.042650000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ceb5ab3cb64637952657be23d347e1c79dd02212 721bd22bcf45a63ebd9bd0f478ef721b45cc5383 git Not specified
CNA Linux Linux affected ceb5ab3cb64637952657be23d347e1c79dd02212 d58fca8513414b15387460b14a7a0a30405b9c9e git Not specified
CNA Linux Linux affected ceb5ab3cb64637952657be23d347e1c79dd02212 779c59274d03cc5c07237a2c845dfb71cff77705 git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d58fca8513414b15387460b14a7a0a30405b9c9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/721bd22bcf45a63ebd9bd0f478ef721b45cc5383 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/779c59274d03cc5c07237a2c845dfb71cff77705 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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