Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: netlink notifier might race to release objects commit release path is invoked via call_rcu and it runs lockless to release the objects after rcu grace period. The netlink notifier handler might win race to remove objects that the transaction context is still referencing from the commit release path. Call rcu_barrier() to ensure pending rcu callbacks run to completion if the list of transactions to be destroyed is not empty.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.12, < 5.15.78 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1ffe7100411a8b9015115ce124cd6c9c9da6f8e3Patch
- https://git.kernel.org/stable/c/d4bc8271db21ea9f1c86a1ca4d64999f184d4aaePatch
- https://git.kernel.org/stable/c/e40b7c44d19e327ad8b49a491ef1fa8dcc4566e0Patch
FAQ
What is CVE-2022-49920?
CVE-2022-49920 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: netlink notifier might race to release objects commit release path is invoked via call_rcu and it runs lockl...
How severe is CVE-2022-49920?
CVE-2022-49920 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49920?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.