CVE-2026-23434
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < 28ea836cc44cb8b89c1c174707ead0c1133c60e9 | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < fe4a73c3dd48308149d57a10c2761e1d36ced7ba | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < ce5229e78078e437704157eb542f43a6f83b429b | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < a80291e577b44593a724d6cd64c14337c78f194d | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < 5fd5c078af23cb353507aa522e09d557d7eaef04 | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < f25446e2c28939753d3b62d34dfda49952b2557d | affected |
| Linux | Linux | 92270086b7e5ada7ab381c06cc3da2e95ed17088 < bab2bc6e850a697a23b9e5f0e21bb8c187615e95 | affected |
| Linux | Linux | 5.7 | affected |
| Linux | Linux | 0 < 5.7 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.78 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.20 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.10 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9
- https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba
- https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b
- https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d
- https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2
- https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04
- https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d
- https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95
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