CVE-2026-80614

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80614", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.773Z", "datePublished": "2026-08-28T06:48:35.720Z", "dateUpdated": "2026-10-21T12:46:34.944Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:46:34.944Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: emac: Fix NULL pointer dereference in emac_probe\n\nMove devm_request_irq() after devm_platform_ioremap_resource() so that\ndev->emacp is mapped before the interrupt handler can fire. An early\ninterrupt hitting emac_irq() would dereference the NULL dev->emacp and\ncrash.\n\nAlso remove redundant error message. devm_platform_ioremap_resource()\nalready returns an error message with dev_err_probe()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - IBM EMAC error IRQs are raised by the on-chip Ethernet controller from wire-side events; a remote attacker on the attached network can send Ethernet traffic during emac_probe to assert interrupts that invoke emac_irq() before dev->emacp is ioremap'd.\nAC:L - Once devm_request_irq() registers emac_irq(), any EMAC interrupt fires immediately; an attacker can sustain Ethernet flooding throughout boot/probe, and firmware often leaves the controller active with pending IRQs that hit the narrow pre-ioremap window reliably.\nPR:N - Triggering EMAC hardware interrupts requires only the ability to send Ethernet frames on the connected network segment during driver probe, not local shell access, capabilities, or authenticated sessions.\nUI:N - Exploitation occurs during automatic platform-driver probe at kernel boot or module initialization; no discretionary user action is required beyond the device powering on with its Ethernet port connected.\nS:U - A NULL pointer dereference in the EMAC hard-IRQ handler causes a local kernel oops or panic only; it does not cross VM, container, or IOMMU security boundaries.\nC:N - The bug dereferences a NULL dev->emacp when reading ISR registers via in_be32(), causing an immediate kernel fault with no attacker-controlled memory disclosure or out-of-bounds read.\nI:N - Impact is limited to a NULL pointer fault in hardirq context; there is no heap corruption, arbitrary write, or control-flow hijack primitive beyond the crash itself.\nA:H - A NULL pointer dereference in emac_irq() hard interrupt context causes a kernel oops or panic, rendering the entire system unavailable on affected PowerPC embedded platforms."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/ibm/emac/core.c"], "versions": [{"version": "dcc34ef7c83473222027f475014a2bf8ab798372", "lessThan": "90bb7164878b5e57d447f02c71c238f4f246016a", "status": "affected", "versionType": "git"}, {"version": "dcc34ef7c83473222027f475014a2bf8ab798372", "lessThan": "a103cdb0681e7185d1b0a12ce6a7c5416c208ccd", "status": "affected", "versionType": "git"}, {"version": "dcc34ef7c83473222027f475014a2bf8ab798372", "lessThan": "44068b6863fbda78fc810921ddf61642c377b3ca", "status": "affected", "versionType": "git"}, {"version": "dcc34ef7c83473222027f475014a2bf8ab798372", "lessThan": "f623d38fe6c4e8c40b23f42cc6fe6963fa49997b", "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/net/ethernet/ibm/emac/core.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "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": "6.12", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/90bb7164878b5e57d447f02c71c238f4f246016a"}, {"url": "https://git.kernel.org/stable/c/a103cdb0681e7185d1b0a12ce6a7c5416c208ccd"}, {"url": "https://git.kernel.org/stable/c/44068b6863fbda78fc810921ddf61642c377b3ca"}, {"url": "https://git.kernel.org/stable/c/f623d38fe6c4e8c40b23f42cc6fe6963fa49997b"}], "title": "net: emac: Fix NULL pointer dereference in emac_probe", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/ibm/emac/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "90bb7164878b5e57d447f02c71c238f4f246016a", "status": "affected", "version": "dcc34ef7c83473222027f475014a2bf8ab798372", "versionType": "git"}, {"lessThan": "a103cdb0681e7185d1b0a12ce6a7c5416c208ccd", "status": "affected", "version": "dcc34ef7c83473222027f475014a2bf8ab798372", "versionType": "git"}, {"lessThan": "44068b6863fbda78fc810921ddf61642c377b3ca", "status": "affected", "version": "dcc34ef7c83473222027f475014a2bf8ab798372", "versionType": "git"}, {"lessThan": "f623d38fe6c4e8c40b23f42cc6fe6963fa49997b", "status": "affected", "version": "dcc34ef7c83473222027f475014a2bf8ab798372", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/ibm/emac/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: emac: Fix NULL pointer dereference in emac_probe\n\nMove devm_request_irq() after devm_platform_ioremap_resource() so that\ndev->emacp is mapped before the interrupt handler can fire. An early\ninterrupt hitting emac_irq() would dereference the NULL dev->emacp and\ncrash.\n\nAlso remove redundant error message. devm_platform_ioremap_resource()\nalready returns an error message with dev_err_probe()."}], "id": "CVE-2026-80614", "lastModified": "2026-10-21T13:19:55.420", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-28T08:16:45.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44068b6863fbda78fc810921ddf61642c377b3ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/90bb7164878b5e57d447f02c71c238f4f246016a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a103cdb0681e7185d1b0a12ce6a7c5416c208ccd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f623d38fe6c4e8c40b23f42cc6fe6963fa49997b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: emac: Fix NULL pointer dereference in emac_probe", "id": "2525412", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525412"}, "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"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: emac: Fix NULL pointer dereference in emac_probe\nMove devm_request_irq() after devm_platform_ioremap_resource() so that\ndev->emacp is mapped before the interrupt handler can fire. An early\ninterrupt hitting emac_irq() would dereference the NULL dev->emacp and\ncrash.\nAlso remove redundant error message. devm_platform_ioremap_resource()\nalready returns an error message with dev_err_probe().", "A flaw was found in the Linux kernel's emac network driver. An early interrupt in the `emac_irq()` handler can occur before the `dev->emacp` pointer is properly initialized. This can lead to a NULL pointer dereference, causing the system to crash and resulting in a Denial of Service (DoS)."], "name": "CVE-2026-80614", "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": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80614\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80614\nhttps://lore.kernel.org/linux-cve-announce/2026082834-CVE-2026-80614-7614@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[dcc34ef7c83473222027f475014a2bf8ab798372,a103cdb0681e7185d1b0a12ce6a7c5416c208ccd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[dcc34ef7c83473222027f475014a2bf8ab798372,44068b6863fbda78fc810921ddf61642c377b3ca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[dcc34ef7c83473222027f475014a2bf8ab798372,f623d38fe6c4e8c40b23f42cc6fe6963fa49997b)"}}], "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": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2,*]"}}], "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": "2026-08-28T10:00:06.043481+00:00", "updated": "2026-08-29T11:00:10.626742+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}