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Vulnerability CVE-2021-47467
Published: 2024-05-22
| Description: |
In the Linux kernel, the following vulnerability has been resolved:
kunit: fix reference count leak in kfree_at_end
The reference counting issue happens in the normal path of
kfree_at_end(). When kunit_alloc_and_get_resource() is invoked, the
function forgets to handle the returned resource object, whose refcount
increased inside, causing a refcount leak.
Fix this issue by calling kunit_alloc_resource() instead of
kunit_alloc_and_get_resource().
Fixed the following when applying:
Shuah Khan <skhan@linuxfoundation.org>
CHECK: Alignment should match open parenthesis
+ kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL,
(void *)to_free); |
References: |
https://git.kernel.org/stable/c/bbdd158b40b66a9403391a517f24ef6613573446
https://git.kernel.org/stable/c/f62314b1ced25c58b86e044fc951cd6a1ea234cf
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