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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < 8408655ec8344511667b61d8257dc59c80ee3391affectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < f5d2ed4ed47d3906e2495a3537a48b127f497a17affectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < 2bf706fe7831b319f23a85b9728f961cfed40c3eaffectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < d26f8c361f751c188b7ebaf8189aa0258968fd98affectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < 16f6588a3b7a2a20d10ad9b766be74c60ba347ccaffectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < d89044889ecd11b0c2f86663597246e9bdd25679affectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < d49628d63d4e6bbc8a1621afb88e5fc901611beeaffectedc8ae3f744ddca0da164bcacee42d1d4b6fe7027d to < ca19808bc6fac7e29420d8508df569b346b3e339affected
Linux Linux
Default version status: affected
5.8affected0 to < 5.8unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗