CVE-2026-43445

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{"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ne1000/e1000e: Fix leak in DMA error cleanup\n\nIf an error is encountered while mapping TX buffers, the driver should\nunmap any buffers already mapped for that skb.\n\nBecause count is incremented after a successful mapping, it will always\nmatch the correct number of unmappings needed when dma_error is reached.\nDecrementing count before the while loop in dma_error causes an\noff-by-one error. If any mapping was successful before an unsuccessful\nmapping, exactly one DMA mapping would leak.\n\nIn these commits, a faulty while condition caused an infinite loop in\ndma_error:\nCommit 03b1320dfcee (\"e1000e: remove use of skb_dma_map from e1000e\ndriver\")\nCommit 602c0554d7b0 (\"e1000: remove use of skb_dma_map from e1000 driver\")\n\nCommit c1fa347f20f1 (\"e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of\nunsigned in *_tx_map()\") fixed the infinite loop, but introduced the\noff-by-one error.\n\nThis issue may still exist in the igbvf driver, but I did not address it\nin this patch."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ne1000/e1000e: Correcci\u00f3n de fuga en la limpieza de errores DMA\n\nSi se encuentra un error mientras se mapean b\u00faferes TX, el controlador deber\u00eda desmapear cualquier b\u00fafer ya mapeado para ese skb.\n\nDebido a que count se incrementa despu\u00e9s de un mapeo exitoso, siempre coincidir\u00e1 con el n\u00famero correcto de desmapeos necesarios cuando se alcanza dma_error. Decrementar count antes del bucle while en dma_error causa un error off-by-one. Si alg\u00fan mapeo fue exitoso antes de un mapeo no exitoso, exactamente un mapeo DMA se fugar\u00eda.\n\nEn estos commits, una condici\u00f3n while defectuosa caus\u00f3 un bucle infinito en dma_error:\nCommit 03b1320dfcee (\u2019e1000e: remove use of skb_dma_map from e1000e driver\u2019)\nCommit 602c0554d7b0 (\u2019e1000: remove use of skb_dma_map from e1000 driver\u2019)\n\nCommit c1fa347f20f1 (\u2019e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of unsigned in *_tx_map()\u2019) corrigi\u00f3 el bucle infinito, pero introdujo el error off-by-one.\n\nEste problema a\u00fan puede existir en el controlador igbvf, pero no lo abord\u00e9 en este parche."}], "id": "CVE-2026-43445", "lastModified": "2026-11-11T20:10:00.273", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43445", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:39:00.489379Z", "version": "2.0.3"}}]}, "published": "2026-05-08T15:16:56.983", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: e1000/e1000e: Fix leak in DMA error cleanup", "id": "2468157", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468157"}, "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-193", "details": ["A flaw was found in the Linux kernel's e1000 and e1000e network drivers. When an error occurs during the mapping of transmit (TX) buffers, an off-by-one error in the Direct Memory Access (DMA) cleanup process can lead to a memory leak. This issue results in the gradual exhaustion of system resources, which could eventually cause a Denial of Service (DoS) condition, making the system unresponsive."], "name": "CVE-2026-43445", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43445\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43445\nhttps://lore.kernel.org/linux-cve-announce/2026050855-CVE-2026-43445-4e53@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,7eaeb778bfaa3b2a804f89321c234d59c74569db)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,0606c24a745bafd1be5d66c48361638cd9cad74b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,519051c711dfd239ef6e4b28878efee400a035f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,0a1fc25deabab4efce64610e3c449485c4fa8f5f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,fa5ba9867a55e640df0dc79bf0199770fb043f03)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,30e87ade8d678c25a8546cf38c0b498fa5cb27d3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,10b5e65959e955a1c8894e0a5413944b5a70204a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1fa347f20f17f14a4a1575727fa24340e8a9117,e94eaef11142b01f77bf8ba4d0b59720b7858109)"}}], "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": "2.6.33"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.33)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.19,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.9,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-08T17:00:16.208081+00:00", "updated": "2026-05-21T18:00:13.921418+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}