CVE-2026-64254

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64254", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.773Z", "datePublished": "2026-07-24T15:31:22.293Z", "dateUpdated": "2026-08-17T04:52:06.227Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:52:06.227Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR\n\nWhen BAR_PEER_SPAD and BAR_CONFIG share one PCI BAR, the module teardown\npath ends up calling pci_iounmap() on the same iomem with some offset,\nwhich is unnecessary and triggers a kernel warning like the following:\n\n Trying to vunmap() nonexistent vm area (0000000069a5ffe8)\n WARNING: mm/vmalloc.c:3470 at vunmap+0x58/0x68, CPU#5: modprobe/2937\n [...]\n Call trace:\n vunmap+0x58/0x68 (P)\n iounmap+0x34/0x48\n pci_iounmap+0x2c/0x40\n ntb_epf_pci_remove+0x44/0x80 [ntb_hw_epf]\n pci_device_remove+0x48/0xf8\n device_remove+0x50/0x88\n device_release_driver_internal+0x1c8/0x228\n driver_detach+0x50/0xb0\n bus_remove_driver+0x74/0x100\n driver_unregister+0x34/0x68\n pci_unregister_driver+0x34/0xa0\n ntb_epf_pci_driver_exit+0x14/0xfe0 [ntb_hw_epf]\n [...]\n\nFix it by unmapping only when PEER_SPAD and CONFIG use difference bars."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/ntb/hw/epf/ntb_hw_epf.c"], "versions": [{"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "eb47b9bffd07a47b84910847cb5ea066ce184055", "status": "affected", "versionType": "git"}, {"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "06f6dd2ff2bd07eaf7178a807407ff27e85122b4", "status": "affected", "versionType": "git"}, {"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "a4be4a1308f02bff79a30eea2d04ead5b63685f2", "status": "affected", "versionType": "git"}, {"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "81371dbd23601f67f01372817fdbab42c5601e43", "status": "affected", "versionType": "git"}, {"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "9764a786ba98db58f0725913c369e721253aba33", "status": "affected", "versionType": "git"}, {"version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "lessThan": "d876153680e3d721d385e554def919bce3d18c74", "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/ntb/hw/epf/ntb_hw_epf.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.177", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.0", "versionEndExcluding": "6.1.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/eb47b9bffd07a47b84910847cb5ea066ce184055"}, {"url": "https://git.kernel.org/stable/c/06f6dd2ff2bd07eaf7178a807407ff27e85122b4"}, {"url": "https://git.kernel.org/stable/c/a4be4a1308f02bff79a30eea2d04ead5b63685f2"}, {"url": "https://git.kernel.org/stable/c/81371dbd23601f67f01372817fdbab42c5601e43"}, {"url": "https://git.kernel.org/stable/c/9764a786ba98db58f0725913c369e721253aba33"}, {"url": "https://git.kernel.org/stable/c/d876153680e3d721d385e554def919bce3d18c74"}], "title": "NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/ntb/hw/epf/ntb_hw_epf.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "eb47b9bffd07a47b84910847cb5ea066ce184055", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}, {"lessThan": "06f6dd2ff2bd07eaf7178a807407ff27e85122b4", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}, {"lessThan": "a4be4a1308f02bff79a30eea2d04ead5b63685f2", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}, {"lessThan": "81371dbd23601f67f01372817fdbab42c5601e43", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}, {"lessThan": "9764a786ba98db58f0725913c369e721253aba33", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}, {"lessThan": "d876153680e3d721d385e554def919bce3d18c74", "status": "affected", "version": "e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/ntb/hw/epf/ntb_hw_epf.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": "6.1.177", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.144", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.95", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.38", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E1C3142A-8469-4087-A10A-726FF6961047", "versionEndExcluding": "6.1.177", "versionStartIncluding": "6.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C8AD3BC8-C843-423C-B9DB-CB52F67F578E", "versionEndExcluding": "6.6.144", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4E206B86-E0E3-4394-A93F-39F2D50A8AA8", "versionEndExcluding": "6.12.95", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA591B28-5D62-449E-BDBE-3C9391BF070A", "versionEndExcluding": "6.18.38", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9526B150-E2B3-4C6F-8AE5-1AF92B75AD9E", "versionEndExcluding": "7.1.3", "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\nNTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR\n\nWhen BAR_PEER_SPAD and BAR_CONFIG share one PCI BAR, the module teardown\npath ends up calling pci_iounmap() on the same iomem with some offset,\nwhich is unnecessary and triggers a kernel warning like the following:\n\n Trying to vunmap() nonexistent vm area (0000000069a5ffe8)\n WARNING: mm/vmalloc.c:3470 at vunmap+0x58/0x68, CPU#5: modprobe/2937\n [...]\n Call trace:\n vunmap+0x58/0x68 (P)\n iounmap+0x34/0x48\n pci_iounmap+0x2c/0x40\n ntb_epf_pci_remove+0x44/0x80 [ntb_hw_epf]\n pci_device_remove+0x48/0xf8\n device_remove+0x50/0x88\n device_release_driver_internal+0x1c8/0x228\n driver_detach+0x50/0xb0\n bus_remove_driver+0x74/0x100\n driver_unregister+0x34/0x68\n pci_unregister_driver+0x34/0xa0\n ntb_epf_pci_driver_exit+0x14/0xfe0 [ntb_hw_epf]\n [...]\n\nFix it by unmapping only when PEER_SPAD and CONFIG use difference bars."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nNTB: epf: Evitar pci_iounmap() con desplazamiento cuando PEER_SPAD y CONFIG comparten BAR\n\nCuando BAR_PEER_SPAD y BAR_CONFIG comparten una BAR PCI, la ruta de desmontaje del m\u00f3dulo termina llamando a pci_iounmap() en el mismo iomem con alg\u00fan desplazamiento, lo cual es innecesario y dispara una advertencia del kernel como la siguiente:\n\n Intentando vunmap() un \u00e1rea de vm inexistente (0000000069a5ffe8)\n ADVERTENCIA: mm/vmalloc.c:3470 en vunmap+0x58/0x68, CPU#5: modprobe/2937\n [...]\n Traza de llamada:\n vunmap+0x58/0x68 (P)\n iounmap+0x34/0x48\n pci_iounmap+0x2c/0x40\n ntb_epf_pci_remove+0x44/0x80 [ntb_hw_epf]\n pci_device_remove+0x48/0xf8\n device_remove+0x50/0x88\n device_release_driver_internal+0x1c8/0x228\n driver_detach+0x50/0xb0\n bus_remove_driver+0x74/0x100\n driver_unregister+0x34/0x68\n pci_unregister_driver+0x34/0xa0\n ntb_epf_pci_driver_exit+0x14/0xfe0 [ntb_hw_epf]\n [...]\n\nSe soluciona desmapeando solo cuando PEER_SPAD y CONFIG usan barras diferentes."}], "id": "CVE-2026-64254", "lastModified": "2026-11-08T16:10:00.183", "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": "2026-07-24T16:16:55.130", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/06f6dd2ff2bd07eaf7178a807407ff27e85122b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/81371dbd23601f67f01372817fdbab42c5601e43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9764a786ba98db58f0725913c369e721253aba33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a4be4a1308f02bff79a30eea2d04ead5b63685f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d876153680e3d721d385e554def919bce3d18c74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb47b9bffd07a47b84910847cb5ea066ce184055"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR", "id": "2506776", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506776"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-64254", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "libkrun", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-07-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64254\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64254\nhttps://lore.kernel.org/linux-cve-announce/2026072420-CVE-2026-64254-0322@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,eb47b9bffd07a47b84910847cb5ea066ce184055)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,06f6dd2ff2bd07eaf7178a807407ff27e85122b4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,a4be4a1308f02bff79a30eea2d04ead5b63685f2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,81371dbd23601f67f01372817fdbab42c5601e43)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,9764a786ba98db58f0725913c369e721253aba33)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4,d876153680e3d721d385e554def919bce3d18c74)"}}], "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": "generic", "value": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.177,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.144,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.95,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.38,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.3,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-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": "2026-07-25T03:15:03.074701+00:00", "updated": "2026-08-13T11:00:12.631587+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}