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vuln-cve/data/2026/98xxx/CVE-2026-98014.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-98014",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-25T10:19:56.069Z",
"datePublished": "2026-09-25T10:23:37.131Z",
"dateUpdated": "2026-10-19T09:12:19.664Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T09:12:19.664Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch, prevent mc_list repopulation during vport disable\n\nIn mlx5_esw_vport_disable(), move esw_apply_vport_rx_mode() ahead\nof esw_vport_change_handle_locked() so vport->allmulti_rule is\nNULL before the change handler observes it.\n\nDuring FW-fatal recovery the disable runs while dev->state ==\nINTERNAL_ERROR. The promisc query inside esw_update_vport_rx_mode()\nfails and returns early, leaving vport->allmulti_rule intact, so\nesw_update_vport_mc_promisc() runs and adds MLX5_ACTION_ADD entries\nto vport->mc_list whose flow rules are then installed in the FDB\nby esw_add_mc_addr(). esw_destroy_legacy_table() tears down the\nFDB with those refs still held, corrupting the sub-tree and\nleaving dangling flow_rule pointers in vport->mc_list.\n\nTwo-stage failure on `echo 1 > /sys/bus/pci/devices/<bdf>/reset`:\n\n refcount_t: underflow; use-after-free.\n tree_put_node+0xef/0x110 [mlx5_core]\n clean_tree+0x44/0xd0 [mlx5_core] (x5)\n mlx5_fs_core_cleanup+0x57/0x1c0 [mlx5_core]\n mlx5_unload+0x65/0xd0 [mlx5_core]\n ... mlx5_health_try_recover\n\n BUG: unable to handle page fault for address: 0000000003000055\n down_write+0x1c/0x60\n mlx5_del_flow_rules+0x33/0x1f0 [mlx5_core]\n esw_del_mc_addr+0x7b/0x170 [mlx5_core]\n esw_apply_vport_addr_list+0x56/0xf0 [mlx5_core]\n esw_vport_change_handle_locked+0x28b/0x310 [mlx5_core]\n mlx5_esw_vport_enable+0x270/0x4a0 [mlx5_core]\n ... mlx5_load ... mlx5_health_try_recover\n\nesw_apply_vport_rx_mode(false, false) clears vport->allmulti_rule\nvia its local state machine even when the FW del fails. With the\nrule NULL the !IS_ERR_OR_NULL(allmulti_rule) gate in the change\nhandler closes, no rules are installed during disable, and the\nreload starts with a clean mc_list."
}
],
"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/eswitch.c"
],
"versions": [
{
"version": "4df1f2d36bdc9a368650bf14b9097c555e95f71d",
"lessThan": "413e04adcc1fd263cf02b1b83b4a0dbdc66bcee9",
"status": "affected",
"versionType": "git"
},
{
"version": "63546395a0e6ac264f78f65218086ce6014b4494",
"lessThan": "2196f9d3358b00fcb28835a5fde14071f51ecb96",
"status": "affected",
"versionType": "git"
},
{
"version": "922f56e9a795d6f3dd72d3428ebdd7ee040fa855",
"lessThan": "5a2b87dfceccf9065157a14a599d395c2b6281b8",
"status": "affected",
"versionType": "git"
},
{
"version": "922f56e9a795d6f3dd72d3428ebdd7ee040fa855",
"lessThan": "69904608e25e8ba58111aadd9210892cf3876201",
"status": "affected",
"versionType": "git"
},
{
"version": "922f56e9a795d6f3dd72d3428ebdd7ee040fa855",
"lessThan": "72cfcb79026cffb6490f5044153a841d360b0cfc",
"status": "affected",
"versionType": "git"
},
{
"version": "922f56e9a795d6f3dd72d3428ebdd7ee040fa855",
"lessThan": "668e050429c7ca688cf4e7112f97f0cd269d446b",
"status": "affected",
"versionType": "git"
},
{
"version": "922f56e9a795d6f3dd72d3428ebdd7ee040fa855",
"lessThan": "c0c6f4ba8a37688f7b4d4044898d88f0450d44c2",
"status": "affected",
"versionType": "git"
},
{
"version": "18cead61e437f4c7898acca0a5f3df12f801d97f",
"status": "affected",
"versionType": "git"
},
{
"version": "6f5780536181d1d0d09a11a1bc92f22e143447e2",
"status": "affected",
"versionType": "git"
},
{
"version": "5.15.105",
"lessThan": "5.15.222",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.22",
"lessThan": "6.1.189",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.10.177",
"lessThan": "5.11",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.2.9",
"lessThan": "6.3",
"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/eswitch.c"
],
"versions": [
{
"version": "6.3",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.3",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.222",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.189",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.158",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.111",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.53",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.7",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"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": "5.15.105",
"versionEndExcluding": "5.15.222"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.22",
"versionEndExcluding": "6.1.189"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.6.158"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.12.111"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.18.53"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "7.2.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "7.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10.177"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2.9"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/413e04adcc1fd263cf02b1b83b4a0dbdc66bcee9"
},
{
"url": "https://git.kernel.org/stable/c/2196f9d3358b00fcb28835a5fde14071f51ecb96"
},
{
"url": "https://git.kernel.org/stable/c/5a2b87dfceccf9065157a14a599d395c2b6281b8"
},
{
"url": "https://git.kernel.org/stable/c/69904608e25e8ba58111aadd9210892cf3876201"
},
{
"url": "https://git.kernel.org/stable/c/72cfcb79026cffb6490f5044153a841d360b0cfc"
},
{
"url": "https://git.kernel.org/stable/c/668e050429c7ca688cf4e7112f97f0cd269d446b"
},
{
"url": "https://git.kernel.org/stable/c/c0c6f4ba8a37688f7b4d4044898d88f0450d44c2"
}
],
"title": "net/mlx5: E-Switch, prevent mc_list repopulation during vport disable",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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