{"id":"CVE-2025-39875","summary":"igb: Fix NULL pointer dereference in ethtool loopback test","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nigb: Fix NULL pointer dereference in ethtool loopback test\n\nThe igb driver currently causes a NULL pointer dereference when executing\nthe ethtool loopback test. This occurs because there is no associated\nq_vector for the test ring when it is set up, as interrupts are typically\nnot added to the test rings.\n\nSince commit 5ef44b3cb43b removed the napi_id assignment in\n__xdp_rxq_info_reg(), there is no longer a need to pass a napi_id to it.\nTherefore, simply use 0 as the last parameter.","modified":"2026-03-20T12:43:05.445023Z","published":"2025-09-23T06:00:47.198Z","related":["SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39875.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/473be7d39efd3be383e9c0c8e44b53508b4ffeb5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/75871a525a596ff4d16c4aebc0018f8d0923c9b1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39875.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39875"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2c6196013f84651772388a86dfd4bb033d0c0d45"},{"fixed":"473be7d39efd3be383e9c0c8e44b53508b4ffeb5"},{"fixed":"75871a525a596ff4d16c4aebc0018f8d0923c9b1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39875.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}