{"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": "2026-07-24T15:31:22.293Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T15:31:22.293Z"}, "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-rc1", "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-rc1"}]}]}], "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"}}}}

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