128 lines
7.0 KiB
JSON
128 lines
7.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98619",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.360Z",
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"datePublished": "2026-10-18T15:19:39.448Z",
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"dateUpdated": "2026-10-19T09:22:47.182Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:22:47.182Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethtool: keep rtnl_lock for the ioctl self test\n\nAn offline self test that brings the interface down and back up with\nnetif_close() / netif_open() requires rtnl_lock for both. Since the\nethtool IOCTL path became rtnl-optional for ops-locked drivers, the\nETHTOOL_TEST ioctl runs holding only the netdev instance lock, so on an\nops-locked driver the self test now tears the device down without\nrtnl_lock.\n\nWith lockdep this reproduces deterministically on every offline self\ntest on such a driver; note the sole lock held is the instance lock, not\nrtnl:\n\n WARNING: suspicious RCU usage\n net/core/netpoll.c:207 suspicious rcu_dereference_protected() usage!\n 1 lock held by ethtool/107:\n #0: (&dev->lock){+.+.}, at: dev_ethtool\n Call Trace:\n netpoll_poll_disable\n __dev_close_many\n netif_close_many\n netif_close\n fbnic_self_test\n dev_ethtool_locked\n dev_ethtool\n dev_ioctl\n sock_ioctl\n __x64_sys_ioctl\n\nWithout lockdep the same condition trips ASSERT_RTNL() in\n__dev_close_many() / __dev_open(); that check only samples the global\nrtnl state, so it can be masked by a concurrent rtnl holder, but the\ndevice is still being reconfigured without the lock it requires.\n\nThe ethtool self_test is a legacy ioctl-only command, so an ETHTOOL_TEST\ncase is only needed on the ioctl path. Add an opt-in bit for drivers whose\nself test needs rtnl_lock and set it on the ops-locked drivers whose\noffline self test tears the interface down and up:\n\n - fbnic (ops-locked via queue_mgmt_ops): fbnic_self_test() offline path\n uses netif_close() / netif_open().\n - bnxt (ops-locked via queue_mgmt_ops): bnxt_self_test() offline path\n goes through bnxt_close_nic() / bnxt_half_open_nic() /\n bnxt_half_close_nic() / bnxt_open_nic(), which close and reopen the\n device."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c",
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"drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c",
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"include/linux/ethtool.h",
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"net/ethtool/common.h"
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],
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"versions": [
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{
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"version": "f994752b11273ded7ec6b49ae5c1d319eef21743",
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"lessThan": "4ca1503491f1f25a954c13ac5775bf6775c5abc8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f994752b11273ded7ec6b49ae5c1d319eef21743",
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"lessThan": "1b82958f3f035df5ccaab5430a2302f08a5d5351",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c",
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"drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c",
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"include/linux/ethtool.h",
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"net/ethtool/common.h"
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],
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"versions": [
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{
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"version": "7.2",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.2",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.9",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.2",
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"versionEndExcluding": "7.2.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.2",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/4ca1503491f1f25a954c13ac5775bf6775c5abc8"
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},
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{
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"url": "https://git.kernel.org/stable/c/1b82958f3f035df5ccaab5430a2302f08a5d5351"
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}
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],
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"title": "net: ethtool: keep rtnl_lock for the ioctl self test",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |