CVE-2026-23434

In 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.

The following products are affected by CVE-2026-23434 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23434.

URL	Resource
https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04
https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d
https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95
https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b
https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d
https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2
https://lore.kernel.org/linux-cve-announce/2026040311-CVE-2026-23434-f0f0@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-23434
https://www.cve.org/CVERecord?id=CVE-2026-23434