CVE-2026-46285

mtd: docg3: fix use-after-free in docg3_release()

State: Published
Severity: Not scored
Published: Jun 8, 2026
Updated: Jun 14, 2026
Reserved: May 13, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 8408655ec8344511667b61d8257dc59c80ee3391Affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before f5d2ed4ed47d3906e2495a3537a48b127f497a17Affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 2bf706fe7831b319f23a85b9728f961cfed40c3eAffected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d26f8c361f751c188b7ebaf8189aa0258968fd98Affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 16f6588a3b7a2a20d10ad9b766be74c60ba347ccAffected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d89044889ecd11b0c2f86663597246e9bdd25679Affected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d49628d63d4e6bbc8a1621afb88e5fc901611beeAffected c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before ca19808bc6fac7e29420d8508df569b346b3e339Affected
LinuxLinux	5.8Affected before 5.8Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.86 through 6.12.Not affected 6.18.27 through 6.18.Not affected 7.0.4 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 8408655ec8344511667b61d8257dc59c80ee3391Affected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before f5d2ed4ed47d3906e2495a3537a48b127f497a17Affected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 2bf706fe7831b319f23a85b9728f961cfed40c3eAffected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d26f8c361f751c188b7ebaf8189aa0258968fd98Affected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before 16f6588a3b7a2a20d10ad9b766be74c60ba347ccAffected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d89044889ecd11b0c2f86663597246e9bdd25679Affected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before d49628d63d4e6bbc8a1621afb88e5fc901611beeAffected
c8ae3f744ddca0da164bcacee42d1d4b6fe7027d to before ca19808bc6fac7e29420d8508df569b346b3e339Affected

LinuxLinux

5.8Affected
before 5.8Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.86 through 6.12.*Not affected
6.18.27 through 6.18.*Not affected
7.0.4 through 7.0.*Not affected
7.1 and laterNot affected

References

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