PT-2026-47357 · Linux · Linux

Published 2026-06-08 · Updated 2026-06-08 · CVE-2026-46285

Mitre

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.

Related Identifiers

CVE-2026-46285

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-46285 · Security Note
• https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17 · Note
• https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347cc · Note
• https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391 · Note
• https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98 · Note
• https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611bee · Note
• https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679 · Note
• https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339 · Note
• https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3e · Note