Vulnerability 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 <[email protected]> CHECK: Alignment should match open parenthesis + kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL, (void *)to_free);
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.14, < 5.14.15 |
References
- https://git.kernel.org/stable/c/bbdd158b40b66a9403391a517f24ef6613573446Patch
- https://git.kernel.org/stable/c/f62314b1ced25c58b86e044fc951cd6a1ea234cfPatch
- https://git.kernel.org/stable/c/bbdd158b40b66a9403391a517f24ef6613573446Patch
- https://git.kernel.org/stable/c/f62314b1ced25c58b86e044fc951cd6a1ea234cfPatch
FAQ
What is CVE-2021-47467?
CVE-2021-47467 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ku...
How severe is CVE-2021-47467?
CVE-2021-47467 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47467?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.