CVE-2026-46285
mtd: docg3: fix use-after-free in docg3_release()
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391
- https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17
- https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3e
- https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98
- https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347cc
References (8)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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