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Change History

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure

Patch series "mm/damon/sysfs: fix memory leak and NULL dereference
issues", v4.

DAMON_SYSFS can leak memory under allocation failure, and do NULL pointer
dereference when a privileged user make wrong sequences of control.  Fix
those.


This patch (of 3):

When damon_sysfs_new_test_ctx() fails in damon_sysfs_commit_input(),
param_ctx is leaked because the early return skips the cleanup at the out
label.  Destroy param_ctx before returning.

https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc

https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867

https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71