CVE-2026-64170

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error pointer deref after DMA setup failure\n\nThe driver falls back to PIO mode if DMA setup fails during probe.\n\nMake sure to the clear the DMA channel pointers on setup failure to\navoid dereferencing an error pointer (or attempting to release a channel\na second time) on later probe errors or driver unbind.\n\nThis issue was flagged by Sashiko when reviewing a devres allocation\nconversion patch."}], "id": "CVE-2026-64170", "lastModified": "2026-11-06T17:18:38.207", "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": 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["Patch"], "url": "https://git.kernel.org/stable/c/8f9b61d255b1e989b8913b06c8ebe0aba5e1b238"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9e673affb92c29d9ba879bf4ea81c5e840166b56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7e8f3efd50a165ba0189f6dc57f7e51a7d149db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d577c55d189e7ae150973058d13e299b6855633f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: spi: qup: fix error pointer deref after DMA setup failure", "id": "2502609", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502609"}, "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-825", "details": ["A flaw was found in the Linux kernel's Serial Peripheral Interface (SPI) Qualcomm Universal Peripheral (QUP) driver. When the Direct Memory Access (DMA) setup fails during the driver's initialization, the driver attempts to fall back to Programmed Input/Output (PIO) mode. However, it fails to properly clear the DMA channel pointers, which could lead to dereferencing an invalid memory address. This could result in system instability or a denial of service, making the system unresponsive to legitimate requests."], "name": "CVE-2026-64170", "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": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64170\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64170\nhttps://lore.kernel.org/linux-cve-announce/2026071936-CVE-2026-64170-0eeb@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,0bb3bd442f0bdad3932739a61dd6c580c9c1955e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,d577c55d189e7ae150973058d13e299b6855633f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,9e673affb92c29d9ba879bf4ea81c5e840166b56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,45760b72e84c1a1498f1a8a9047184c85299da20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,8f9b61d255b1e989b8913b06c8ebe0aba5e1b238)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,4bb4764f2c51f03f657a28029eb0595d8223aab5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,4f4051e9d644c371c50de4a042b85bba6727d5c3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[612762e82ae6058d69b4ce734598491bf030afe7,a7e8f3efd50a165ba0189f6dc57f7e51a7d149db)"}}], "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": "generic", "value": "4.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.142,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.92,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.34,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.11,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-07-21T19:15:02.984894+00:00", "updated": "2026-08-13T18:15:04.824157+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}