209 lines
10 KiB
JSON
209 lines
10 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-72345",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-08-09T03:40:39.920Z",
|
|
"datePublished": "2026-08-15T05:55:50.427Z",
|
|
"dateUpdated": "2026-10-16T18:55:19.426Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-15T10:08:36.251Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: LAG, Fix off-by-one in single-FDB error rollback\n\nOn failure at index i, the reverse cleanup loop in\nmlx5_lag_create_single_fdb() starts from i, so the failed index\nitself is rolled back. That can operate on uninitialized state or\ndouble-tear-down a rule the add_one path already self-rolled-back.\n\nStart the rollback from i - 1 so only successfully-installed entries\nare undone."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The bug is only reachable when mlx5 shared-FDB LAG setup runs via local admin paths (bond netdev notifier or devlink esw_multiport), not from remote packet handling on the mlx5 data path.\nAC:L - An attacker with CAP_NET_ADMIN can trigger bonding/MPESW setup and retry until mlx5_eswitch_offloads_single_fdb_add_one fails, reliably exercising the faulty rollback loop without uncontrollable timing or layout dependencies.\nPR:L - Exploitation requires configuring bonding or devlink eswitch parameters, which needs CAP_NET_ADMIN; per kernel CNA guidance this is Low because that capability is obtainable inside unprivileged user namespaces.\nUI:N - No end-user interaction is required beyond the attacker (or their privileged account) performing the LAG/shared-FDB configuration that reaches mlx5_lag_create_single_fdb().\nS:U - Impact is confined to kernel mlx5 eswitch/LAG state on the host; it does not cross a VM, container, or IOMMU security boundary into another authority.\nC:H - The off-by-one rollback can tear down uninitialized or already-cleared eswitch flow/FDB state, causing memory corruption that can be leveraged for kernel information disclosure beyond a simple crash.\nI:H - Double teardown of master egress bounce rules and slave root FDB entries can corrupt mlx5 steering structures and heap metadata, enabling arbitrary kernel writes or control-flow hijacking.\nA:H - Incorrect rollback of failed single-FDB installs can panic the kernel or leave eswitch offload state inconsistent, causing oops, hang, or denial of service on affected Mellanox hosts."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/net/ethernet/mellanox/mlx5/core/lag/shared_fdb.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "ddbb5ddc43ad000a984149db5af1133433938404",
|
|
"lessThan": "0be672071d6e8c4d3be6a8f796d8e47198763770",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ddbb5ddc43ad000a984149db5af1133433938404",
|
|
"lessThan": "40cc06bf71476932e5d139fa326dcd0372766e16",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ddbb5ddc43ad000a984149db5af1133433938404",
|
|
"lessThan": "0f0e4ae6975c773f7854fc48932a267f6c79088f",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "8330e9f0214c0f0b73c57b3f3f619b64c8035029",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6.12.113",
|
|
"lessThan": "6.13",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/net/ethernet/mellanox/mlx5/core/lag/shared_fdb.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.14",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.14",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.57",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1.5",
|
|
"lessThanOrEqual": "7.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2",
|
|
"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": "6.14",
|
|
"versionEndExcluding": "6.18.57"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.14",
|
|
"versionEndExcluding": "7.1.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.14",
|
|
"versionEndExcluding": "7.2"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.12.113"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/0be672071d6e8c4d3be6a8f796d8e47198763770"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/40cc06bf71476932e5d139fa326dcd0372766e16"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/0f0e4ae6975c773f7854fc48932a267f6c79088f"
|
|
}
|
|
],
|
|
"title": "net/mlx5: LAG, Fix off-by-one in single-FDB error rollback",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-72345",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T18:47:31.454617Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T18:55:19.426Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |