CVE-2026-53335
mm/damon/lru_sort: handle ctx allocation failure
Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/lru_sort: handle ctx allocation failure DAMON_LRU_SORT allocates the damon_ctx object for its kdamond in its init function. damon_lru_sort_enabled_store() wrongly assumes the allocation will always succeed once tried. If the damon_ctx allocation was failed, therefore, code execution reaches to damon_commit_ctx() while 'ctx' is NULL. As a result, it dereferences the NULL 'ctx' pointer. Avoid the NULL dereference by returning -ENOMEM if 'ctx' is NULL.
INFO
Published Date :
July 1, 2026, 1:32 p.m.
Last Modified :
July 1, 2026, 1:32 p.m.
Remotely Exploit :
No
Source :
Linux
Solution
- Apply the patch to the Linux kernel.
- Ensure context allocation failures are properly handled.
- Avoid dereferencing NULL pointers in damon_commit_ctx().
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