{"api_version":"1","generated_at":"2026-07-23T12:52:33+00:00","cve":"CVE-2026-45880","urls":{"html":"https://cve.report/CVE-2026-45880","api":"https://cve.report/api/cve/CVE-2026-45880.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45880","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45880"},"summary":{"title":"PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails\n\nWhen vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap()\ndoesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired\nafter gen_pool_alloc_owner(), and memunmap_pages() will hang forever when\ntrying to remove the PCI device.\n\nFix it by adding the missed percpu_ref_put().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:01","updated_at":"2026-06-25 21:12:11"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3","name":"https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e","name":"https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f","name":"https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40","name":"https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38","name":"https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45880","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45880","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 baa42b756d183a59572f3890981a3d32b8d05d40 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 51b7181cfbedf289ce794b6d97a1c596c309ec38 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 e19cce88ec4c4877f4ff2469099b9cf23cc3e93e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 a1f4dc72efc3204db95d052058d785cad7ce755f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/pci/p2pdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"baa42b756d183a59572f3890981a3d32b8d05d40","status":"affected","version":"7e9c7ef83d785236f5a8c3761dd053fae9b92fb8","versionType":"git"},{"lessThan":"51b7181cfbedf289ce794b6d97a1c596c309ec38","status":"affected","version":"7e9c7ef83d785236f5a8c3761dd053fae9b92fb8","versionType":"git"},{"lessThan":"e19cce88ec4c4877f4ff2469099b9cf23cc3e93e","status":"affected","version":"7e9c7ef83d785236f5a8c3761dd053fae9b92fb8","versionType":"git"},{"lessThan":"a1f4dc72efc3204db95d052058d785cad7ce755f","status":"affected","version":"7e9c7ef83d785236f5a8c3761dd053fae9b92fb8","versionType":"git"},{"lessThan":"6220694c52a5a04102b48109e4f24e958b559bd3","status":"affected","version":"7e9c7ef83d785236f5a8c3761dd053fae9b92fb8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/pci/p2pdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","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":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.14","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.4","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails\n\nWhen vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap()\ndoesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired\nafter gen_pool_alloc_owner(), and memunmap_pages() will hang forever when\ntrying to remove the PCI device.\n\nFix it by adding the missed percpu_ref_put()."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:16:52.117Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40"},{"url":"https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38"},{"url":"https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e"},{"url":"https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f"},{"url":"https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3"}],"title":"PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-45880","datePublished":"2026-05-27T12:16:52.117Z","dateReserved":"2026-05-13T15:03:33.082Z","dateUpdated":"2026-05-27T12:16:52.117Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:01","lastModifiedDate":"2026-06-25 21:12:11","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.128","matchCriteriaId":"851E9353-6C09-4CC9-877E-E09DB164A3C2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.75","matchCriteriaId":"BCE16369-98ED-41CF-8995-DFDC10B288D2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.14","matchCriteriaId":"BF463CB7-1F58-4607-B847-77ED23E4B9B7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.4","matchCriteriaId":"672A3E79-EC03-479D-8503-361DFBDC8092"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45880","Ordinal":"1","Title":"PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fail","CVE":"CVE-2026-45880","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45880","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails\n\nWhen vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap()\ndoesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired\nafter gen_pool_alloc_owner(), and memunmap_pages() will hang forever when\ntrying to remove the PCI device.\n\nFix it by adding the missed percpu_ref_put().","Type":"Description","Title":"PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fail"}]}}}