{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31502", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.104Z", "datePublished": "2026-04-22T13:54:22.481Z", "dateUpdated": "2026-04-22T13:54:22.481Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-22T13:54:22.481Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nteam: fix header_ops type confusion with non-Ethernet ports\n\nSimilar to commit 950803f72547 (\"bonding: fix type confusion in\nbond_setup_by_slave()\") team has the same class of header_ops type\nconfusion.\n\nFor non-Ethernet ports, team_setup_by_port() copies port_dev->header_ops\ndirectly. When the team device later calls dev_hard_header() or\ndev_parse_header(), these callbacks can run with the team net_device\ninstead of the real lower device, so netdev_priv(dev) is interpreted as\nthe wrong private type and can crash.\n\nThe syzbot report shows a crash in bond_header_create(), but the root\ncause is in team: the topology is gre -> bond -> team, and team calls\nthe inherited header_ops with its own net_device instead of the lower\ndevice, so bond_header_create() receives a team device and interprets\nnetdev_priv() as bonding private data, causing a type confusion crash.\n\nFix this by introducing team header_ops wrappers for create/parse,\nselecting a team port under RCU, and calling the lower device callbacks\nwith port->dev, so each callback always sees the correct net_device\ncontext.\n\nAlso pass the selected lower device to the lower parse callback, so\nrecursion is bounded in stacked non-Ethernet topologies and parse\ncallbacks always run with the correct device context."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/team/team_core.c"], "versions": [{"version": "1d76efe1577b4323609b1bcbfafa8b731eda071a", "lessThan": "6d3161fa3eee64d46b766fb0db33ec7f300ef52d", "status": "affected", "versionType": "git"}, {"version": "1d76efe1577b4323609b1bcbfafa8b731eda071a", "lessThan": "0a7468ed49a6b65d34abcc6eb60e15f7f6d34da0", "status": "affected", "versionType": "git"}, {"version": "1d76efe1577b4323609b1bcbfafa8b731eda071a", "lessThan": "20491d384d973a63fbdaf7a71e38d69b0659ea55", "status": "affected", "versionType": "git"}, {"version": "1d76efe1577b4323609b1bcbfafa8b731eda071a", "lessThan": "425000dbf17373a4ab8be9428f5dc055ef870a56", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/team/team_core.c"], "versions": [{"version": "3.7", "status": "affected"}, {"version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.80", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.12.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6d3161fa3eee64d46b766fb0db33ec7f300ef52d"}, {"url": "https://git.kernel.org/stable/c/0a7468ed49a6b65d34abcc6eb60e15f7f6d34da0"}, {"url": "https://git.kernel.org/stable/c/20491d384d973a63fbdaf7a71e38d69b0659ea55"}, {"url": "https://git.kernel.org/stable/c/425000dbf17373a4ab8be9428f5dc055ef870a56"}], "title": "team: fix header_ops type confusion with non-Ethernet ports", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nteam: fix header_ops type confusion with non-Ethernet ports\n\nSimilar to commit 950803f72547 (\"bonding: fix type confusion in\nbond_setup_by_slave()\") team has the same class of header_ops type\nconfusion.\n\nFor non-Ethernet ports, team_setup_by_port() copies port_dev->header_ops\ndirectly. When the team device later calls dev_hard_header() or\ndev_parse_header(), these callbacks can run with the team net_device\ninstead of the real lower device, so netdev_priv(dev) is interpreted as\nthe wrong private type and can crash.\n\nThe syzbot report shows a crash in bond_header_create(), but the root\ncause is in team: the topology is gre -> bond -> team, and team calls\nthe inherited header_ops with its own net_device instead of the lower\ndevice, so bond_header_create() receives a team device and interprets\nnetdev_priv() as bonding private data, causing a type confusion crash.\n\nFix this by introducing team header_ops wrappers for create/parse,\nselecting a team port under RCU, and calling the lower device callbacks\nwith port->dev, so each callback always sees the correct net_device\ncontext.\n\nAlso pass the selected lower device to the lower parse callback, so\nrecursion is bounded in stacked non-Ethernet topologies and parse\ncallbacks always run with the correct device context."}], "id": "CVE-2026-31502", "lastModified": "2026-04-22T14:16:48.713", "metrics": {}, "published": "2026-04-22T14:16:48.713", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a7468ed49a6b65d34abcc6eb60e15f7f6d34da0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/20491d384d973a63fbdaf7a71e38d69b0659ea55"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/425000dbf17373a4ab8be9428f5dc055ef870a56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d3161fa3eee64d46b766fb0db33ec7f300ef52d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}