{ "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": "2026-05-23T16:06:24.518Z" }, "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 > /sys/bus/pci/devices//sriov_numvfs\n $ echo 1 > /sys/bus/pci/devices//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" } } } }