In the Linux kernel, the following vulnerability has been resolved:
mm/damon/core: fix new damon_target objects leaks on damon_commit_targets()
Patch series "mm/damon/core: fix memory leaks and ignored inputs from
damon_commit_ctx()".
Due to two bugs in damon_commit_targets() and damon_commit_schemes(),
which are called from damon_commit_ctx(), some user inputs can be ignored,
and some mmeory objects can be leaked. Fix those.
Note that only DAMON sysfs interface users are affected. Other DAMON core
API user modules that more focused more on simple and dedicated production
usages, including DAMON_RECLAIM and DAMON_LRU_SORT are not using the buggy
function in the way, so not affected.
This patch (of 2):
When new DAMON targets are added via damon_commit_targets(), the newly
created targets are not deallocated when updating the internal data
(damon_commit_target()) is failed. Worse yet, even if the setup is
successfully done, the new target is not linked to the context. Hence,
the new targets are always leaked regardless of the internal data setup
failure. Fix the leaks.
Metrics
Affected Vendors & Products
References
History
Wed, 15 Jan 2025 13:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: fix new damon_target objects leaks on damon_commit_targets() Patch series "mm/damon/core: fix memory leaks and ignored inputs from damon_commit_ctx()". Due to two bugs in damon_commit_targets() and damon_commit_schemes(), which are called from damon_commit_ctx(), some user inputs can be ignored, and some mmeory objects can be leaked. Fix those. Note that only DAMON sysfs interface users are affected. Other DAMON core API user modules that more focused more on simple and dedicated production usages, including DAMON_RECLAIM and DAMON_LRU_SORT are not using the buggy function in the way, so not affected. This patch (of 2): When new DAMON targets are added via damon_commit_targets(), the newly created targets are not deallocated when updating the internal data (damon_commit_target()) is failed. Worse yet, even if the setup is successfully done, the new target is not linked to the context. Hence, the new targets are always leaked regardless of the internal data setup failure. Fix the leaks. | |
Title | mm/damon/core: fix new damon_target objects leaks on damon_commit_targets() | |
References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2025-01-15T13:05:39.110Z
Updated: 2025-01-15T13:05:39.110Z
Reserved: 2025-01-11T14:45:42.026Z
Link: CVE-2024-57886
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-01-15T13:15:13.010
Modified: 2025-01-15T13:15:13.010
Link: CVE-2024-57886
Redhat
No data.