mtd: rawnand: serialize lock/unlock against other NAND operations

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Summary

CVECVE-2026-23434
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 16:16:24 UTC
Updated2026-04-03 16:16:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: serialize lock/unlock against other NAND operations nand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area without holding the NAND device lock. On controllers that implement SET_FEATURES via multiple low-level PIO commands, these can race with concurrent UBI/UBIFS background erase/write operations that hold the device lock, resulting in cmd_pending conflicts on the NAND controller. Add nand_get_device()/nand_release_device() around the lock/unlock operations to serialize them against all other NAND controller access.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 ce5229e78078e437704157eb542f43a6f83b429b git Not specified
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 a80291e577b44593a724d6cd64c14337c78f194d git Not specified
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 git Not specified
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 5fd5c078af23cb353507aa522e09d557d7eaef04 git Not specified
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 f25446e2c28939753d3b62d34dfda49952b2557d git Not specified
CNA Linux Linux affected 92270086b7e5ada7ab381c06cc3da2e95ed17088 bab2bc6e850a697a23b9e5f0e21bb8c187615e95 git Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 semver Not specified
CNA Linux Linux unaffected 6.1.167 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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