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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < 8408655ec8344511667b61d8257dc59c80ee3391; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < f5d2ed4ed47d3906e2495a3537a48b127f497a17; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < 2bf706fe7831b319f23a85b9728f961cfed40c3e; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < d26f8c361f751c188b7ebaf8189aa0258968fd98; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < 16f6588a3b7a2a20d10ad9b766be74c60ba347cc; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < d89044889ecd11b0c2f86663597246e9bdd25679; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < d49628d63d4e6bbc8a1621afb88e5fc901611bee; >= c8ae3f744ddca0da164bcacee42d1d4b6fe7027d, < ca19808bc6fac7e29420d8508df569b346b3e339 |
| Linux | Linux | 5.8 |
References
- https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347ccPatch
- https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3ePatch
- https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391Patch
- https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339Patch
- https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98Patch
- https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611beePatch
- https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679Patch
- https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17Patch
Timeline
- Published
- Jun 8, 2026
- Last modified
- Jul 23, 2026
- NVD status
- Analyzed