CVE-2026-46285
Description
AI Translation Available
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.
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
https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611bee
https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679
https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17