{"id":"CVE-2026-43200","summary":"PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions\n\nstruct configfs_item_operations callbacks are defined like the following:\n\n  int (*allow_link)(struct config_item *src, struct config_item *target);\n  void (*drop_link)(struct config_item *src, struct config_item *target);\n\nWhile pci_primary_epc_epf_link() and pci_secondary_epc_epf_link() specify\nthe parameters in the correct order, pci_primary_epc_epf_unlink() and\npci_secondary_epc_epf_unlink() specify the parameters in the wrong order,\nleading to the below kernel crash when using the unlink command in\nconfigfs:\n\n  Unable to handle kernel paging request at virtual address 0000000300000857\n  Mem abort info:\n  ...\n  pc : string+0x54/0x14c\n  lr : vsnprintf+0x280/0x6e8\n  ...\n  string+0x54/0x14c\n  vsnprintf+0x280/0x6e8\n  vprintk_default+0x38/0x4c\n  vprintk+0xc4/0xe0\n  pci_epf_unbind+0xdc/0x108\n  configfs_unlink+0xe0/0x208+0x44/0x74\n  vfs_unlink+0x120/0x29c\n  __arm64_sys_unlinkat+0x3c/0x90\n  invoke_syscall+0x48/0x134\n  do_el0_svc+0x1c/0x30prop.0+0xd0/0xf0\n\n[mani: cced stable, changed commit message as per https://lore.kernel.org/linux-pci/aV9joi3jF1R6ca02@ryzen]","modified":"2026-06-18T03:55:59.515085880Z","published":"2026-05-06T11:28:06.904Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43200.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/142b1bba3299264b76ed8ef53cd93b2b2af65d6c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46"},{"type":"WEB","url":"https://git.kernel.org/stable/c/339191811e6fc4559c4008c5af7a91b05086d596"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58686bf62cb38b92e4b28408162a5703775b4d12"},{"type":"WEB","url":"https://git.kernel.org/stable/c/733cbc3aa97e71cc70847e75c925b364cc9b04a6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aefc0e0bd20f54abe3b501b8798c0be656af272b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43200.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43200"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e85a2d7837622bd99c96f5bbc7f972da90c285a2"},{"fixed":"58686bf62cb38b92e4b28408162a5703775b4d12"},{"fixed":"1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46"},{"fixed":"142b1bba3299264b76ed8ef53cd93b2b2af65d6c"},{"fixed":"339191811e6fc4559c4008c5af7a91b05086d596"},{"fixed":"733cbc3aa97e71cc70847e75c925b364cc9b04a6"},{"fixed":"aefc0e0bd20f54abe3b501b8798c0be656af272b"},{"fixed":"8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43200.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.12.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43200.json"}}],"schema_version":"1.7.5"}