{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-50041","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-10-21T12:17:06.071Z","datePublished":"2024-10-21T19:39:40.435Z","dateUpdated":"2025-11-03T22:24:48.319Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T12:59:24.484Z"},"descriptions":[{"lang":"en","value":"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\tportvlan and/or mac filters).\n3. Observe the potential memory leak and inconsistent state in the\n\tmac_filter_hash.\n\nThis synchronization ensures the integrity of the mac_filter_hash and prevents\nthe described leak."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/i40e/i40e_main.c","drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"],"versions":[{"version":"ddec6cbbe22781d17965f1e6386e5a6363c058d2","lessThan":"9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3","status":"affected","versionType":"git"},{"version":"fed0d9f13266a22ce1fc9a97521ef9cdc6271a23","lessThan":"9a9747288ba0a9ad4f5c9877f18dd245770ad64e","status":"affected","versionType":"git"},{"version":"fed0d9f13266a22ce1fc9a97521ef9cdc6271a23","lessThan":"703c4d820b31bcadf465288d5746c53445f02a55","status":"affected","versionType":"git"},{"version":"fed0d9f13266a22ce1fc9a97521ef9cdc6271a23","lessThan":"8831abff1bd5b6bc8224f0c0671f46fbd702b5b2","status":"affected","versionType":"git"},{"version":"fed0d9f13266a22ce1fc9a97521ef9cdc6271a23","lessThan":"dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb","status":"affected","versionType":"git"},{"version":"8bfcbaa379694e05290fcff21f4bd40afcf88776","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/i40e/i40e_main.c","drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"5.15.168","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.113","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.57","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.11.4","lessThanOrEqual":"6.11.*","status":"unaffected","versionType":"semver"},{"version":"6.12","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.54","versionEndExcluding":"5.15.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.11.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3"},{"url":"https://git.kernel.org/stable/c/9a9747288ba0a9ad4f5c9877f18dd245770ad64e"},{"url":"https://git.kernel.org/stable/c/703c4d820b31bcadf465288d5746c53445f02a55"},{"url":"https://git.kernel.org/stable/c/8831abff1bd5b6bc8224f0c0671f46fbd702b5b2"},{"url":"https://git.kernel.org/stable/c/dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb"}],"title":"i40e: Fix macvlan leak by synchronizing access to mac_filter_hash","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-50041","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:24:46.896116Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-22T13:28:44.245Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T22:24:48.319Z"}}]}}