net: team: free skb when broadcast has no txable port
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.
CVE-2026-99026
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-99026
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5fc889911a99043a97da1daa0d010ad72cbc3042",
"lessThan": "961563117626f4681623077ec0cfd86f86da0d49",
"versionType": "git"
},
{
"status": "affected",
"version": "5fc889911a99043a97da1daa0d010ad72cbc3042",
"lessThan": "f34b1bcac4581a5bd3daf9eff90f175e736b54aa",
"versionType": "git"
},
{
"status": "affected",
"version": "5fc889911a99043a97da1daa0d010ad72cbc3042",
"lessThan": "489114c9ecae44e523361a4b3e610ee5ebd9189c",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/team/team_mode_broadcast.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/team/team_mode_broadcast.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-99026
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #52860 · Revision 1
- Added to Heist Feed
- Publisher date