CVE-2026-46285

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < 8408655ec8344511667b61d8257dc59c80ee3391affected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < f5d2ed4ed47d3906e2495a3537a48b127f497a17affected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < 2bf706fe7831b319f23a85b9728f961cfed40c3eaffected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < d26f8c361f751c188b7ebaf8189aa0258968fd98affected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < 16f6588a3b7a2a20d10ad9b766be74c60ba347ccaffected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < d89044889ecd11b0c2f86663597246e9bdd25679affected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < d49628d63d4e6bbc8a1621afb88e5fc901611beeaffected
LinuxLinuxc8ae3f744ddca0da164bcacee42d1d4b6fe7027d < ca19808bc6fac7e29420d8508df569b346b3e339affected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.86 <= 6.12.*unaffected
LinuxLinux6.18.27 <= 6.18.*unaffected
LinuxLinux7.0.4 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References