CVE-2026-43200

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43200", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.992Z", "datePublished": "2026-05-06T11:28:06.904Z", "dateUpdated": "2026-05-11T22:19:49.591Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:19:49.591Z"}, "descriptions": [{"lang": "en", "value": "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]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": 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{"version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "lessThan": "8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8", "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/pci/endpoint/pci-ep-cfs.c"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "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": "5.12", "versionEndExcluding": "5.15.202"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/58686bf62cb38b92e4b28408162a5703775b4d12"}, {"url": "https://git.kernel.org/stable/c/1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46"}, {"url": "https://git.kernel.org/stable/c/142b1bba3299264b76ed8ef53cd93b2b2af65d6c"}, {"url": "https://git.kernel.org/stable/c/339191811e6fc4559c4008c5af7a91b05086d596"}, {"url": "https://git.kernel.org/stable/c/733cbc3aa97e71cc70847e75c925b364cc9b04a6"}, {"url": "https://git.kernel.org/stable/c/aefc0e0bd20f54abe3b501b8798c0be656af272b"}, {"url": "https://git.kernel.org/stable/c/8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8"}], "title": "PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/pci/endpoint/pci-ep-cfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "58686bf62cb38b92e4b28408162a5703775b4d12", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "142b1bba3299264b76ed8ef53cd93b2b2af65d6c", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "339191811e6fc4559c4008c5af7a91b05086d596", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "733cbc3aa97e71cc70847e75c925b364cc9b04a6", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "aefc0e0bd20f54abe3b501b8798c0be656af272b", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}, {"lessThan": "8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8", "status": "affected", "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/pci/endpoint/pci-ep-cfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"lessThan": "5.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.202", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.165", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.128", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.75", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.16", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D50913C4-6689-4F0C-A587-7397F492A17C", "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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]"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nPCI: endpoint: Correcci\u00f3n de par\u00e1metros intercambiados en las funciones pci_{primary/secondary}_epc_epf_unlink()\n\nLas devoluciones de llamada de struct configfs_item_operations se definen de la siguiente manera:\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\nMientras que pci_primary_epc_epf_link() y pci_secondary_epc_epf_link() especifican los par\u00e1metros en el orden correcto, pci_primary_epc_epf_unlink() y pci_secondary_epc_epf_unlink() especifican los par\u00e1metros en el orden incorrecto, lo que lleva al siguiente fallo del kernel al usar el comando unlink en configfs:\n\n No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual 0000000300000857\n Informaci\u00f3n de aborto de memoria:\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: con copia a stable, se cambi\u00f3 el mensaje de commit seg\u00fan https://lore.kernel.org/linux-pci/aV9joi3jF1R6ca02@ryzen]"}], "id": "CVE-2026-43200", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-06T12:16:39.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/142b1bba3299264b76ed8ef53cd93b2b2af65d6c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/339191811e6fc4559c4008c5af7a91b05086d596"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/58686bf62cb38b92e4b28408162a5703775b4d12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/733cbc3aa97e71cc70847e75c925b364cc9b04a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aefc0e0bd20f54abe3b501b8798c0be656af272b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: PCI: endpoint: Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions", "id": "2467184", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467184"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-628", "details": ["A flaw was found in the Linux kernel's PCI endpoint functionality. Incorrect parameter handling in the pci_primary_epc_epf_unlink() and pci_secondary_epc_epf_unlink() functions allows a local user to trigger a kernel crash. This occurs when the unlink command is used in configfs, leading to a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-43200", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43200\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43200\nhttps://lore.kernel.org/linux-cve-announce/2026050645-CVE-2026-43200-5a5f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,58686bf62cb38b92e4b28408162a5703775b4d12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,1c96c1acef4b4a1108fc13f84a8ac0b0633bbb46)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,142b1bba3299264b76ed8ef53cd93b2b2af65d6c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,339191811e6fc4559c4008c5af7a91b05086d596)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,733cbc3aa97e71cc70847e75c925b364cc9b04a6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,aefc0e0bd20f54abe3b501b8798c0b656af272b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e85a2d7837622bd99c96f5bbc7f972da90c285a2,8754dd7639ab0fd68c3ab9d91c7bdecc3e5740a8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.202,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-06T14:00:06.620320+00:00", "updated": "2026-05-11T23:00:19.498967+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}