{"id":"CVE-2026-99026","title":"net: team: free skb when broadcast has no txable port","summary":"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 witho…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 961563117626f4681623077ec0cfd86f86da0d49","Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < f34b1bcac4581a5bd3daf9eff90f175e736b54aa","Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 489114c9ecae44e523361a4b3e610ee5ebd9189c","Linux 3.6"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T12:21:13.509Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99026","references":[{"url":"https://git.kernel.org/stable/c/961563117626f4681623077ec0cfd86f86da0d49"},{"url":"https://git.kernel.org/stable/c/f34b1bcac4581a5bd3daf9eff90f175e736b54aa"},{"url":"https://git.kernel.org/stable/c/489114c9ecae44e523361a4b3e610ee5ebd9189c"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T13:24:55.534Z","slug":"CVE-2026-99026","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 961563117626f4681623077ec0cfd86f86da0d49`\n- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < f34b1bcac4581a5bd3daf9eff90f175e736b54aa`\n- `Linux >= 5fc889911a99043a97da1daa0d010ad72cbc3042 < 489114c9ecae44e523361a4b3e610ee5ebd9189c`\n- `Linux 3.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}