CVE-2026-31594

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31594", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.121Z", "datePublished": "2026-04-24T14:42:20.556Z", "dateUpdated": "2026-06-14T17:42:35.028Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:42:35.028Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to perform later. This leads to an oops when .allow_link fails\nor when .drop_link is performed. The following is an example oops of the\nformer case:\n\n Unable to handle kernel paging request at virtual address dead000000000108\n [...]\n [dead000000000108] address between user and kernel address ranges\n Internal error: Oops: 0000000096000044 [#1] SMP\n [...]\n Call trace:\n pci_epc_remove_epf+0x78/0xe0 (P)\n pci_primary_epc_epf_link+0x88/0xa8\n configfs_symlink+0x1f4/0x5a0\n vfs_symlink+0x134/0x1d8\n do_symlinkat+0x88/0x138\n __arm64_sys_symlinkat+0x74/0xe0\n [...]\n\nRemove the helper, and drop pci_epc_put(). EPC device refcounting is\ntied to the configfs EPC group lifetime, and pci_epc_put() in the\n.drop_link path is sufficient."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/endpoint/functions/pci-epf-vntb.c"], "versions": [{"version": "e2b6ef72b7aea9d7d480d2df499bcd1c93247abb", "lessThan": "305a0674bc552bfcc3231e23fb91cf4f62aec168", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "b261027a1a235d8925e332363f23135a0eff2b35", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "73bf218de28d039126dc64281d2b47dd3c46a0a3", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "478e776101592eb63298714e96823ef78a3295ec", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "a7a3cab4d33fd8a8aed864c447d0d7c99e85404e", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "0da63230d3ec1ec5fcc443a2314233e95bfece54", "status": "affected", "versionType": "git"}, {"version": "5.15.153", "lessThan": "5.15.209", "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/endpoint/functions/pci-epf-vntb.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.84", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.1", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.15.153", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.136"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.84"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.0.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/305a0674bc552bfcc3231e23fb91cf4f62aec168"}, {"url": "https://git.kernel.org/stable/c/b261027a1a235d8925e332363f23135a0eff2b35"}, {"url": "https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2"}, {"url": "https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3"}, {"url": "https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a"}, {"url": "https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec"}, {"url": "https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e"}, {"url": "https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54"}], "title": "PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/pci/endpoint/functions/pci-epf-vntb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "305a0674bc552bfcc3231e23fb91cf4f62aec168", "status": "affected", "version": "e2b6ef72b7aea9d7d480d2df499bcd1c93247abb", "versionType": "git"}, {"lessThan": "b261027a1a235d8925e332363f23135a0eff2b35", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "73bf218de28d039126dc64281d2b47dd3c46a0a3", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "478e776101592eb63298714e96823ef78a3295ec", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "a7a3cab4d33fd8a8aed864c447d0d7c99e85404e", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "0da63230d3ec1ec5fcc443a2314233e95bfece54", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "5.15.209", "status": "affected", "version": "5.15.153", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/pci/endpoint/functions/pci-epf-vntb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.209", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.175", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.136", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.84", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.24", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.14", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "32F2F3AC-7267-4B2D-B7B6-883A16558607", "versionEndExcluding": "6.6.136", "versionStartIncluding": "6.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4ECA0DE-AFF5-4688-B219-4CA2336CA5B7", "versionEndExcluding": "6.12.84", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8126B8B8-6D0B-4443-86C1-672AEE893555", "versionEndExcluding": "6.18.24", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB", "versionEndExcluding": "6.19.14", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9B5888AB-7403-4335-89E4-21CC0B48366A", "versionEndExcluding": "7.0.1", "versionStartIncluding": "7.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to perform later. This leads to an oops when .allow_link fails\nor when .drop_link is performed. The following is an example oops of the\nformer case:\n\n Unable to handle kernel paging request at virtual address dead000000000108\n [...]\n [dead000000000108] address between user and kernel address ranges\n Internal error: Oops: 0000000096000044 [#1] SMP\n [...]\n Call trace:\n pci_epc_remove_epf+0x78/0xe0 (P)\n pci_primary_epc_epf_link+0x88/0xa8\n configfs_symlink+0x1f4/0x5a0\n vfs_symlink+0x134/0x1d8\n do_symlinkat+0x88/0x138\n __arm64_sys_symlinkat+0x74/0xe0\n [...]\n\nRemove the helper, and drop pci_epc_put(). EPC device refcounting is\ntied to the configfs EPC group lifetime, and pci_epc_put() in the\n.drop_link path is sufficient."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nPCI: endpoint: pci-epf-vntb: Eliminar la desasignaci\u00f3n duplicada de recursos\n\nepf_ntb_epc_destroy() duplica la desasignaci\u00f3n que se supone que el llamador debe realizar m\u00e1s tarde. Esto provoca un \u2019oops\u2019 cuando .allow_link falla o cuando se realiza .drop_link. El siguiente es un ejemplo de \u2019oops\u2019 del primer caso:\n\n No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual dead000000000108\n [...]\n [dead000000000108] direcci\u00f3n entre los rangos de direcciones de usuario y kernel\n Error interno: Oops: 0000000096000044 [#1] SMP\n [...]\n Traza de llamadas:\n pci_epc_remove_epf+0x78/0xe0 (P)\n pci_primary_epc_epf_link+0x88/0xa8\n configfs_symlink+0x1f4/0x5a0\n vfs_symlink+0x134/0x1d8\n do_symlinkat+0x88/0x138\n __arm64_sys_symlinkat+0x74/0xe0\n [...]\n\nEliminar la funci\u00f3n auxiliar y eliminar pci_epc_put(). El conteo de referencias del dispositivo EPC est\u00e1 ligado a la vida \u00fatil del grupo EPC de configfs, y pci_epc_put() en la ruta .drop_link es suficiente."}], "id": "CVE-2026-31594", "lastModified": "2026-11-11T23:10:00.263", "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": "2026-04-24T15:16:37.087", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0da63230d3ec1ec5fcc443a2314233e95bfece54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/305a0674bc552bfcc3231e23fb91cf4f62aec168"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/478e776101592eb63298714e96823ef78a3295ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/73bf218de28d039126dc64281d2b47dd3c46a0a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7a3cab4d33fd8a8aed864c447d0d7c99e85404e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b261027a1a235d8925e332363f23135a0eff2b35"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: PCI: endpoint: pci-epf-vntb: Remove duplicate resource teardown", "id": "2461523", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461523"}, "csaw": false, "details": ["A flaw was found in the Linux kernel's PCI endpoint framework (pci-epf-vntb). This vulnerability arises from a duplicate resource teardown within the `epf_ntb_epc_destroy()` function. A local user could potentially trigger this flaw, leading to a kernel crash and a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-31594", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31594\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31594\nhttps://lore.kernel.org/linux-cve-announce/2026042416-CVE-2026-31594-29aa@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,e238ab12556b00f3b4d8b870b32ba1e4f4d4ebc2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,73bf218de28d039126dc64281d2b47dd3c46a0a3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,cec9ead73ab154a7953f6ab8dd5127e0d6bbf95a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,478e776101592eb63298714e96823ef78a3295ec)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,a7a3cab4d33fd8a8aed864c447d0d7c99e85404e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,0da63230d3ec1ec5fcc443a2314233e95bfece54)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "e2b6ef72b7aea9d7d480d2df499bcd1c93247abb"}}], "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": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.136,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.84,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.24,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.14,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.1,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*]"}}], "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": "2026-04-27T19:00:15.651624+00:00", "updated": "2026-04-30T04:15:26.374614+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}