HIGHCVE-2026-23434Published Modified CNA Linux
CVE-2026-23434: mtd: rawnand: serialize lock/unlock against other NAND operations
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.
Metrics
- CVSS v3.1
- 7.1
- Severity
- HIGH
- Fixed in
- 0
- Affected Products
- 2
Fix available
028ea836cc44cb8b89c1c174707ead0c1133c60e95.10.2535.15.2035fd5c078af23cb353507aa522e09d557d7eaef046.1.1676.6.1306.12.786.18.206.19.107.0a80291e577b44593a724d6cd64c14337c78f194dbab2bc6e850a697a23b9e5f0e21bb8c187615e95ce5229e78078e437704157eb542f43a6f83b429bf25446e2c28939753d3b62d34dfda49952b2557df71ce0ae5aefe39dd5b2f996c0e08550d2153ad2fe4a73c3dd48308149d57a10c2761e1d36ced7ba
Affected packages
- Linux / Linux< 28ea836cc44cb8b89c1c174707ead0c1133c60e9 (from 92270086b7e5ada7ab381c06cc3da2e95ed17088) · < fe4a73c3dd48308149d57a10c2761e1d36ced7ba (from 92270086b7e5ada7ab381c06cc3da2e95ed17088) · < ce5229e78078e437704157eb542f43a6f83b429b (from 92270086b7e5ada7ab381c06cc3da2e95ed17088) · < a80291e577b44593a724d6cd64c14337c78f194d (from 92270086b7e5ada7ab381c06cc3da2e95ed17088) · < f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 (from 92270086b7e5ada7ab381c06cc3da2e95ed17088) · < 5fd5c078af23cb353507aa522e09d557d7eaef04 (from 92270086b7e5ada7ab381c06cc3da2e95ed17088)
- Linux / Linux5.7Fixed in 0, 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H