CVE-2026-31595

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31595", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.121Z", "datePublished": "2026-04-24T14:42:21.355Z", "dateUpdated": "2026-06-14T17:42:36.054Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:42:36.054Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-vntb: Stop cmd_handler work in epf_ntb_epc_cleanup\n\nDisable the delayed work before clearing BAR mappings and doorbells to\navoid running the handler after resources have been torn down.\n\n Unable to handle kernel paging request at virtual address ffff800083f46004\n [...]\n Internal error: Oops: 0000000096000007 [#1] SMP\n [...]\n Call trace:\n epf_ntb_cmd_handler+0x54/0x200 [pci_epf_vntb] (P)\n process_one_work+0x154/0x3b0\n worker_thread+0x2c8/0x400\n kthread+0x148/0x210\n ret_from_fork+0x10/0x20"}], "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": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "b2eb405bbced3a6e772545e1b74dbde37cee1f8f", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "ceb73484e7204f661f770069ecdf35f6e941879c", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "6773cc24c004930903a57761132c1e7728907f8f", "status": "affected", "versionType": "git"}, {"version": "e35f56bb03304abc92c928b641af41ca372966bb", "lessThan": "9921cce25bfe4021f6e55ca995351eb967165297", "status": 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"5.15.153"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b2eb405bbced3a6e772545e1b74dbde37cee1f8f"}, {"url": "https://git.kernel.org/stable/c/ceb73484e7204f661f770069ecdf35f6e941879c"}, {"url": "https://git.kernel.org/stable/c/6773cc24c004930903a57761132c1e7728907f8f"}, {"url": "https://git.kernel.org/stable/c/9921cce25bfe4021f6e55ca995351eb967165297"}, {"url": "https://git.kernel.org/stable/c/5999067140c67530a6cb6f41a8471596e60452cb"}, {"url": "https://git.kernel.org/stable/c/fbb6c353fa2fb5f5f990eda034a1074b0356127e"}, {"url": "https://git.kernel.org/stable/c/d799984233a50abd2667a7d17a9a710a3f10ebe2"}], "title": "PCI: endpoint: pci-epf-vntb: Stop cmd_handler work in epf_ntb_epc_cleanup", "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": "b2eb405bbced3a6e772545e1b74dbde37cee1f8f", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "ceb73484e7204f661f770069ecdf35f6e941879c", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "6773cc24c004930903a57761132c1e7728907f8f", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "9921cce25bfe4021f6e55ca995351eb967165297", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "5999067140c67530a6cb6f41a8471596e60452cb", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "fbb6c353fa2fb5f5f990eda034a1074b0356127e", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"lessThan": "d799984233a50abd2667a7d17a9a710a3f10ebe2", "status": "affected", "version": "e35f56bb03304abc92c928b641af41ca372966bb", "versionType": "git"}, {"status": "affected", "version": "e2b6ef72b7aea9d7d480d2df499bcd1c93247abb", "versionType": "git"}, {"lessThan": "5.16", "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": "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": "6.12.83", "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": "7F0AE5B5-23AC-4DCC-B37A-51CA1DAE7BA8", "versionEndExcluding": "6.12.83", "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: Stop cmd_handler work in epf_ntb_epc_cleanup\n\nDisable the delayed work before clearing BAR mappings and doorbells to\navoid running the handler after resources have been torn down.\n\n Unable to handle kernel paging request at virtual address ffff800083f46004\n [...]\n Internal error: Oops: 0000000096000007 [#1] SMP\n [...]\n Call trace:\n epf_ntb_cmd_handler+0x54/0x200 [pci_epf_vntb] (P)\n process_one_work+0x154/0x3b0\n worker_thread+0x2c8/0x400\n kthread+0x148/0x210\n ret_from_fork+0x10/0x20"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nPCI: endpoint: pci-epf-vntb: Detener el trabajo de cmd_handler en epf_ntb_epc_cleanup\n\nDeshabilitar el trabajo retrasado antes de limpiar las asignaciones BAR y los doorbells para evitar ejecutar el gestor despu\u00e9s de que los recursos hayan sido desmantelados.\n\n Incapaz de manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual ffff800083f46004\n [...]\n Error interno: Oops: 0000000096000007 [#1] SMP\n [...]\n Traza de llamada:\n epf_ntb_cmd_handler+0x54/0x200 [pci_epf_vntb] (P)\n process_one_work+0x154/0x3b0\n worker_thread+0x2c8/0x400\n kthread+0x148/0x210\n ret_from_fork+0x10/0x20"}], "id": "CVE-2026-31595", "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": "2026-04-24T15:16:37.237", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5999067140c67530a6cb6f41a8471596e60452cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6773cc24c004930903a57761132c1e7728907f8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9921cce25bfe4021f6e55ca995351eb967165297"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b2eb405bbced3a6e772545e1b74dbde37cee1f8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ceb73484e7204f661f770069ecdf35f6e941879c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d799984233a50abd2667a7d17a9a710a3f10ebe2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fbb6c353fa2fb5f5f990eda034a1074b0356127e"}], "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: Stop cmd_handler work in epf_ntb_epc_cleanup", "id": "2461455", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461455"}, "csaw": false, "cwe": "CWE-366", "details": ["A flaw was found in the Linux kernel's `pci-epf-vntb` module. This vulnerability occurs due to improper handling of the `cmd_handler` work during the `epf_ntb_epc_cleanup` process. If the delayed work is not disabled before clearing BAR mappings and doorbells, the handler can attempt to access resources that have already been torn down. This can lead to a kernel paging request error and an internal system error, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-31595", "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-2026-31595\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31595\nhttps://lore.kernel.org/linux-cve-announce/2026042416-CVE-2026-31595-b754@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,ceb73484e7204f661f770069ecdf35f6e941879c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,6773cc24c004930903a57761132c1e7728907f8f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,9921cce25bfe4021f6e55ca995351eb967165297)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,5999067140c67530a6cb6f41a8471596e60452cb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,fbb6c353fa2fb5f5f990eda034a1074b0356127e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e35f56bb03304abc92c928b641af41ca372966bb,d799984233a50abd2667a7d17a9a710a3f10ebe2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "e2b6ef72b7aea9d7d480d2df49bcd1c93247abb"}}], "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": "[6.6.136,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.83,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.24,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.14,6.19.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.1,*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-04-27T19:00:15.650858+00:00", "updated": "2026-04-29T17:30:16.151202+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}