Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before 8408655ec8344511667b61d8257dc59c80ee3391; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before f5d2ed4ed47d3906e2495a3537a48b127f497a17; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before 2bf706fe7831b319f23a85b9728f961cfed40c3e; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before d26f8c361f751c188b7ebaf8189aa0258968fd98; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before 16f6588a3b7a2a20d10ad9b766be74c60ba347cc; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before d89044889ecd11b0c2f86663597246e9bdd25679; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before d49628d63d4e6bbc8a1621afb88e5fc901611bee; affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d before ca19808bc6fac7e29420d8508df569b346b3e339 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
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
- https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679
- https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611bee
- https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339