CVE-2026-46285

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: docg3: fix use-after-free in docg3_release() In docg3_release(), the docg3 pointer is obtained from cascade->floors[0]->priv before the loop that calls doc_release_device() on each floor. doc_release_device() frees the docg3 struct via kfree(docg3) at line 1881. After the loop, docg3->cascade->bch dereferences the already-freed pointer. Fix this by accessing cascade->bch directly, which is equivalent since docg3->cascade points back to the same cascade struct, and is already available as a local variable. This also removes the now-unused docg3 local variable.

References

• https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347cc
• https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3e
• https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391
• https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339
• https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98