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vuln-cve/data/2026/43xxx/CVE-2026-43147.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-43147",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-05-01T14:12:55.989Z",
"datePublished": "2026-05-06T11:27:30.235Z",
"dateUpdated": "2026-11-06T15:32:33.682Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-23T16:06:24.518Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV\"\n\nThis reverts commit 05703271c3cd (\"PCI/IOV: Add PCI rescan-remove locking\nwhen enabling/disabling SR-IOV\"), which causes a deadlock by recursively\ntaking pci_rescan_remove_lock when sriov_del_vfs() is called as part of\npci_stop_and_remove_bus_device(). For example with the following sequence\nof commands:\n\n $ echo <NUM> > /sys/bus/pci/devices/<pf>/sriov_numvfs\n $ echo 1 > /sys/bus/pci/devices/<pf>/remove\n\nA trimmed trace of the deadlock on a mlx5 device is as below:\n\n zsh/5715 is trying to acquire lock:\n 000002597926ef50 (pci_rescan_remove_lock){+.+.}-{3:3}, at: sriov_disable+0x34/0x140\n\n but task is already holding lock:\n 000002597926ef50 (pci_rescan_remove_lock){+.+.}-{3:3}, at: pci_stop_and_remove_bus_device_locked+0x24/0x80\n ...\n Call Trace:\n [<00000259778c4f90>] dump_stack_lvl+0xc0/0x110\n [<00000259779c844e>] print_deadlock_bug+0x31e/0x330\n [<00000259779c1908>] __lock_acquire+0x16c8/0x32f0\n [<00000259779bffac>] lock_acquire+0x14c/0x350\n [<00000259789643a6>] __mutex_lock_common+0xe6/0x1520\n [<000002597896413c>] mutex_lock_nested+0x3c/0x50\n [<00000259784a07e4>] sriov_disable+0x34/0x140\n [<00000258f7d6dd80>] mlx5_sriov_disable+0x50/0x80 [mlx5_core]\n [<00000258f7d5745e>] remove_one+0x5e/0xf0 [mlx5_core]\n [<00000259784857fc>] pci_device_remove+0x3c/0xa0\n [<000002597851012e>] device_release_driver_internal+0x18e/0x280\n [<000002597847ae22>] pci_stop_bus_device+0x82/0xa0\n [<000002597847afce>] pci_stop_and_remove_bus_device_locked+0x5e/0x80\n [<00000259784972c2>] remove_store+0x72/0x90\n [<0000025977e6661a>] kernfs_fop_write_iter+0x15a/0x200\n [<0000025977d7241c>] vfs_write+0x24c/0x300\n [<0000025977d72696>] ksys_write+0x86/0x110\n [<000002597895b61c>] __do_syscall+0x14c/0x400\n [<000002597896e0ee>] system_call+0x6e/0x90\n\nThis alone is not a complete fix as it restores the issue the cited commit\ntried to solve. A new fix will be provided as a follow on."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/pci/iov.c"
],
"versions": [
{
"version": "1e8a80290f964bdbad225221c8a1594c7e01c8fd",
"lessThan": "f61cdd7e9b67bb8961b0a81bf294b78343e5db05",
"status": "affected",
"versionType": "git"
},
{
"version": "a645ca21de09e3137cbb224fa6c23cca873a1d01",
"lessThan": "0de341b2365bad430aade0853fe09c2cbe468f59",
"status": "affected",
"versionType": "git"
},
{
"version": "a24219172456f035d886857e265ca24c85b167c8",
"lessThan": "83651d37474c762920e345a3a0828f975ca4d732",
"status": "affected",
"versionType": "git"
},
{
"version": "36039348bca77828bf06eae41b8f76e38cd15847",
"lessThan": "639265296fe6ee21b6f00e00ee2bab65f3b07252",
"status": "affected",
"versionType": "git"
},
{
"version": "53154cd40ccf285f1d1c24367824082061d155bd",
"lessThan": "d47f27e145f8bd13f3c230da5e3af29225b4a2f7",
"status": "affected",
"versionType": "git"
},
{
"version": "05703271c3cdcc0f2a8cf6ebdc45892b8ca83520",
"lessThan": "40f67686a5002c0c322fac918406bbc8d9c2ec2f",
"status": "affected",
"versionType": "git"
},
{
"version": "05703271c3cdcc0f2a8cf6ebdc45892b8ca83520",
"lessThan": "58677783c89681871077f50a7042b0c6380c4fd8",
"status": "affected",
"versionType": "git"
},
{
"version": "05703271c3cdcc0f2a8cf6ebdc45892b8ca83520",
"lessThan": "2fa119c0e5e528453ebae9e70740e8d2d8c0ed5a",
"status": "affected",
"versionType": "git"
},
{
"version": "5c1cd7d405e94dc6cb320cc0cc092b74895b6ddf",
"status": "affected",
"versionType": "git"
},
{
"version": "ee40e5db052d7c6f406fdb95ad639c894c74674c",
"status": "affected",
"versionType": "git"
},
{
"version": "5.10.246",
"lessThan": "5.10.252",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.15.195",
"lessThan": "5.15.202",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.157",
"lessThan": "6.1.165",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.6.113",
"lessThan": "6.6.128",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.12.54",
"lessThan": "6.12.75",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.4.301",
"lessThan": "5.5",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.17.4",
"lessThan": "6.18",
"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/pci/iov.c"
],
"versions": [
{
"version": "6.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.18",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.252",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.202",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.165",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.128",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.75",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.16",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19.6",
"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": "5.10.246",
"versionEndExcluding": "5.10.252"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.15.195",
"versionEndExcluding": "5.15.202"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.157",
"versionEndExcluding": "6.1.165"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.113",
"versionEndExcluding": "6.6.128"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12.54",
"versionEndExcluding": "6.12.75"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18",
"versionEndExcluding": "6.18.16"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18",
"versionEndExcluding": "6.19.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18",
"versionEndExcluding": "7.0"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.4.301"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.17.4"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/f61cdd7e9b67bb8961b0a81bf294b78343e5db05"
},
{
"url": "https://git.kernel.org/stable/c/0de341b2365bad430aade0853fe09c2cbe468f59"
},
{
"url": "https://git.kernel.org/stable/c/83651d37474c762920e345a3a0828f975ca4d732"
},
{
"url": "https://git.kernel.org/stable/c/639265296fe6ee21b6f00e00ee2bab65f3b07252"
},
{
"url": "https://git.kernel.org/stable/c/d47f27e145f8bd13f3c230da5e3af29225b4a2f7"
},
{
"url": "https://git.kernel.org/stable/c/40f67686a5002c0c322fac918406bbc8d9c2ec2f"
},
{
"url": "https://git.kernel.org/stable/c/58677783c89681871077f50a7042b0c6380c4fd8"
},
{
"url": "https://git.kernel.org/stable/c/2fa119c0e5e528453ebae9e70740e8d2d8c0ed5a"
}
],
"title": "Revert \"PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV\"",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-43147",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T15:29:37.623465Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T15:32:33.682Z"
}
}
]
}
}
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