{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64430", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.787Z", "datePublished": "2026-07-25T08:51:06.612Z", "dateUpdated": "2026-07-25T08:51:06.612Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:51:06.612Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: epf: Avoid calling pci_irq_vector() from hardirq context\n\nntb_epf_vec_isr() calls pci_irq_vector() in hardirq context to derive\nthe vector number. pci_irq_vector() calls msi_get_virq() that takes a\nmutex and can therefore trigger \"scheduling while atomic\" splats:\n\n BUG: scheduling while atomic: kworker/u33:0/55/0x00010001\n ...\n Call trace:\n ...\n schedule+0x38/0x110\n schedule_preempt_disabled+0x28/0x50\n __mutex_lock.constprop.0+0x848/0x908\n __mutex_lock_slowpath+0x18/0x30\n mutex_lock+0x4c/0x60\n msi_domain_get_virq+0xe8/0x138\n pci_irq_vector+0x2c/0x60\n ntb_epf_vec_isr+0x28/0x120 [ntb_hw_epf]\n __handle_irq_event_percpu+0x70/0x3a8\n handle_irq_event+0x48/0x100\n handle_edge_irq+0x100/0x1c8\n ...\n\nCache the Linux IRQ number for vector 0 when vectors are allocated and\nuse it as a base in the ISR. Running the ISR in a threaded IRQ handler\nwould also avoid the problem, but that would be unnecessary here."}], "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": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "33bba331a4a5fee8b6026fe72eca13cceeec1b7b", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "aff271b12a1eb8c8b3da19223ae1a6abe1e8168b", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "1dba8444ac0100133d72374634f6d7451fff1ccc", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "174a97f21bf9c54fa37ec0f321692e862ea130a3", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "f71e8d9875069fa73e335f63f02ec6e52e3aaa51", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "6350df503897d57c5634f71b0767d48c3b837583", "status": "affected", "versionType": "git"}, {"version": "812ce2f8d14ea791edd88c36ebcc9017bf4c88cb", "lessThan": "4dcddc1c794d1c65eda68f1f8dd04a0fecc0870f", "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": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "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": "5.12", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/33bba331a4a5fee8b6026fe72eca13cceeec1b7b"}, {"url": "https://git.kernel.org/stable/c/aff271b12a1eb8c8b3da19223ae1a6abe1e8168b"}, {"url": "https://git.kernel.org/stable/c/1dba8444ac0100133d72374634f6d7451fff1ccc"}, {"url": "https://git.kernel.org/stable/c/174a97f21bf9c54fa37ec0f321692e862ea130a3"}, {"url": "https://git.kernel.org/stable/c/f71e8d9875069fa73e335f63f02ec6e52e3aaa51"}, {"url": "https://git.kernel.org/stable/c/6350df503897d57c5634f71b0767d48c3b837583"}, {"url": "https://git.kernel.org/stable/c/4dcddc1c794d1c65eda68f1f8dd04a0fecc0870f"}], "title": "NTB: epf: Avoid calling pci_irq_vector() from hardirq context", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,33bba331a4a5fee8b6026fe72eca13cceeec1b7b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,aff271b12a1eb8c8b3da19223ae1a6abe1e8168b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,1dba8444ac0100133d72374634f6d7451fff1ccc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,174a97f21bf9c54fa37ec0f321692e862ea130a3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,f71e8d9875069fa73e335f63f02ec6e52e3aaa51)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,6350df503897d57c5634f71b0767d48c3b837583)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[812ce2f8d14ea791edd88c36ebcc9017bf4c88cb,4dcddc1c794d1c65eda68f1f8dd04a0fecc0870f)"}}], "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": "5.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-07-25T19:45:03.151798+00:00", "updated": "2026-07-25T19:45:03.151835+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}