Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: team: free skb when broadcast has no txable port bc_transmit() sends the original skb through the last txable port. When no port is txable, it returns false without consuming the skb, but team_xmit() still returns NETDEV_TX_OK. AF_PACKET sends then retain the skb and its socket write-memory charge. A TX-enabled, link-down port keeps the broadcast transmit op installed. Carrier can stay up through a second link-up, TX-disabled port or be forced on by userspace. Free the original skb on the no-port path while leaving the existing drop accounting intact. Discovered by Sashiko during review of previous commit.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5fc889911a99043a97da1daa0d010ad72cbc3042 before 961563117626f4681623077ec0cfd86f86da0d49; affected 5fc889911a99043a97da1daa0d010ad72cbc3042 before f34b1bcac4581a5bd3daf9eff90f175e736b54aa; affected 5fc889911a99043a97da1daa0d010ad72cbc3042 before 489114c9ecae44e523361a4b3e610ee5ebd9189c |
| Linux / Linux | affected 3.6; unaffected 0 before 3.6; unaffected 6.18.57 through 6.18.*; unaffected 7.2.11 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.