143 lines
7.3 KiB
JSON
143 lines
7.3 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-98616",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-09-25T10:25:14.360Z",
|
|
"datePublished": "2026-10-18T15:19:36.165Z",
|
|
"dateUpdated": "2026-10-19T09:22:44.159Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-19T09:22:44.159Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: reset num_napi when the napi vectors are freed\n\nfbn->num_napi is the count of live napi vectors, each of which owns an\nIRQ. The PM path had freed them without clearing the count.\nfbnic_pm_suspend() tears the datapath down via ndo_stop() and frees the\nIRQs, but leaves netif_running() true so resume knows to re-open. Resume\nrebuilds the datapath in __fbnic_pm_resume() and fbnic_reset_queues() sets\nnum_napi and __fbnic_open() re-allocates the vectors.\n\nWhen the datapath is torn down but never rebuilt, num_napi is left\npointing at freed vectors under 2 different scenarios:\n - a PCIe error recovery that fails (fbnic_err_slot_reset() ->\n __fbnic_pm_resume() returns an error -> PCI_ERS_RESULT_DISCONNECT), so\n .resume never runs; or\n - an __fbnic_open() that fails partway on resume and unwinds, freeing\n the vectors after fbnic_reset_queues() has already set num_napi.\n\nThe netdev is then running with num_napi > 0 but napi[] freed, and the\neventual remove/unbind close re-enters fbnic_down() -> fbnic_dbg_down()\nand dereferences the freed vectors:\n BUG: kernel NULL pointer dereference, address: 0000000000000210\n RIP: fbnic_dbg_down+0x28\n\nClear num_napi when the vectors are freed: in the suspend teardown (a\ngood resume re-establishes it before __fbnic_open()) and on the resume\nopen failure. A redundant ndo_stop() then walks an empty napi[]. The\nnormal ndo_stop() down/up cycle is untouched and keeps num_napi for the\nnext ndo_open()."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/net/ethernet/meta/fbnic/fbnic_pci.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "bc6107771bb4be3009168cfda24d22131c026fe8",
|
|
"lessThan": "c5b5aee41b9f5ed0743344be1c7b544555fa3cb9",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "bc6107771bb4be3009168cfda24d22131c026fe8",
|
|
"lessThan": "4f4b767ffea7653a00904383908536e754f8ef5b",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "bc6107771bb4be3009168cfda24d22131c026fe8",
|
|
"lessThan": "4bcc4a92c603fe7f062cea22e20da2e0ad6b12c3",
|
|
"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/ethernet/meta/fbnic/fbnic_pci.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.11",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.11",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.55",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2.9",
|
|
"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": "6.11",
|
|
"versionEndExcluding": "6.18.55"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "7.2.9"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.11",
|
|
"versionEndExcluding": "7.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c5b5aee41b9f5ed0743344be1c7b544555fa3cb9"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4f4b767ffea7653a00904383908536e754f8ef5b"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4bcc4a92c603fe7f062cea22e20da2e0ad6b12c3"
|
|
}
|
|
],
|
|
"title": "eth: fbnic: reset num_napi when the napi vectors are freed",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |