{"vulnerability": "CVE-2024-50041", "sightings": [{"uuid": "42dbba8a-763e-48e1-9d59-9c7061a90a4d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2024-50041", "type": "seen", "source": "https://t.me/cvedetector/8566", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2024-50041 - i40e Linux Kernel Macvlan Concurrency Vulnerability\", \n  \"Content\": \"CVE ID : CVE-2024-50041 \nPublished : Oct. 21, 2024, 8:15 p.m. | 16\u00a0minutes ago \nDescription : In the Linux kernel, the following vulnerability has been resolved:  \n  \ni40e: Fix macvlan leak by synchronizing access to mac_filter_hash  \n  \nThis patch addresses a macvlan leak issue in the i40e driver caused by  \nconcurrent access to vsi->mac_filter_hash. The leak occurs when multiple  \nthreads attempt to modify the mac_filter_hash simultaneously, leading to  \ninconsistent state and potential memory leaks.  \n  \nTo fix this, we now wrap the calls to i40e_del_mac_filter() and zeroing  \nvf->default_lan_addr.addr with spin_lock/unlock_bh(&vsi->mac_filter_hash_lock),  \nensuring atomic operations and preventing concurrent access.  \n  \nAdditionally, we add lockdep_assert_held(&vsi->mac_filter_hash_lock) in  \ni40e_add_mac_filter() to help catch similar issues in the future.  \n  \nReproduction steps:  \n1. Spawn VFs and configure port vlan on them.  \n2. Trigger concurrent macvlan operations (e.g., adding and deleting  \n portvlan and/or mac filters).  \n3. Observe the potential memory leak and inconsistent state in the  \n mac_filter_hash.  \n  \nThis synchronization ensures the integrity of the mac_filter_hash and prevents  \nthe described leak. \nSeverity: 0.0 | NA \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"21 Oct 2024\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2024-10-21T22:43:55.000000Z"}]}