{"id":"CVE-2026-99026","summary":"net: team: free skb when broadcast has no txable port","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: team: free skb when broadcast has no txable port\n\nbc_transmit() sends the original skb through the last txable port.\nWhen no port is txable, it returns false without consuming the skb, but\nteam_xmit() still returns NETDEV_TX_OK. AF_PACKET sends then retain the\nskb and its socket write-memory charge.\n\nA TX-enabled, link-down port keeps the broadcast transmit op installed.\nCarrier can stay up through a second link-up, TX-disabled port or be\nforced on by userspace. Free the original skb on the no-port path while\nleaving the existing drop accounting intact.\n\nDiscovered by Sashiko during review of previous commit.","modified":"2026-11-12T01:49:50.662032659Z","published":"2026-10-23T12:21:13.509Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99026.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/489114c9ecae44e523361a4b3e610ee5ebd9189c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/961563117626f4681623077ec0cfd86f86da0d49"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aec1d35d76ad883bae83c24707010115f38d02ac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f34b1bcac4581a5bd3daf9eff90f175e736b54aa"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99026.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99026"},{"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":"5fc889911a99043a97da1daa0d010ad72cbc3042"},{"fixed":"aec1d35d76ad883bae83c24707010115f38d02ac"},{"fixed":"961563117626f4681623077ec0cfd86f86da0d49"},{"fixed":"f34b1bcac4581a5bd3daf9eff90f175e736b54aa"},{"fixed":"489114c9ecae44e523361a4b3e610ee5ebd9189c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-99026.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6.0"},{"fixed":"6.12.117"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.57"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-99026.json"}}],"schema_version":"1.9.2"}