CVE-2026-99026

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://git.kernel.org/stable/c/961563117626f4681623077ec0cfd86f86da0d49 ↗
• https://git.kernel.org/stable/c/f34b1bcac4581a5bd3daf9eff90f175e736b54aa ↗
• https://git.kernel.org/stable/c/489114c9ecae44e523361a4b3e610ee5ebd9189c ↗