7.1 High

CVE-2026-23434 In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: serialize lock/unlock against other…

Description

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 products and versions

Product	Affected versions	Fixed in
Linux 7.0	earliest → < 7.0	7.0
Linux 6.19	earliest → < 6.19.10	6.19.10
Linux 6.18	earliest → < 6.18.20	6.18.20
Linux 6.12	earliest → < 6.12.78	6.12.78
Linux 6.6	earliest → < 6.6.130	6.6.130
Linux 6.1	earliest → < 6.1.167	6.1.167
Linux 5.15	earliest → < 5.15.203	5.15.203
Linux 5.10	earliest → < 5.10.253	5.10.253
Linux	5.7	No fix stated

Show the 3 other branches

Product	Affected versions	Fixed in
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated