Riskcovery

CVE-2026-99026

net: team: free skb when broadcast has no txable port

State
Published
Severity
Not scored
Published
Oct 23, 2026
Updated
Oct 23, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 5fc889911a99043a97da1daa0d010ad72cbc3042 to before 961563117626f4681623077ec0cfd86f86da0d49Affected
  • 5fc889911a99043a97da1daa0d010ad72cbc3042 to before f34b1bcac4581a5bd3daf9eff90f175e736b54aaAffected
  • 5fc889911a99043a97da1daa0d010ad72cbc3042 to before 489114c9ecae44e523361a4b3e610ee5ebd9189cAffected
LinuxLinux
  • 3.6Affected
  • before 3.6Not affected
  • 6.18.57 through 6.18.*Not affected
  • 7.2.11 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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