CVE-2026-64168

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{}

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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 check the dma.enabled flag before trying to release the DMA\nchannels also on late probe errors to avoid dereferencing an error\npointer (or attempting to release a channel a second time).\n\nThis issue was flagged by Sashiko when reviewing a devres allocation\nconversion patch."}], "id": "CVE-2026-64168", "lastModified": "2026-08-13T15:31:42.170", "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"}]}, "published": "2026-07-19T16:17:58.937", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cdea166c1a07c200caf9d0b722224fca43b23ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3d67fffb74267772d461c02c67f1eff893ad547d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/450c319dd04d0eeff4184889768f7ada826a2e35"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a8f233fb0c7be29b97cd249f64120bf35ce72805"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6f1acf4e57ccf708cdc0cb70f5bb5b65162963b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/be409d2bbe9ca7da7b05cc7dde7499bc481f0766"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/be74e276111f3c23b8e040c8c5e308f67a573add"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c33b4496e95d04722055446c0a31213639438536"}], "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: sprd: fix error pointer deref after DMA setup failure", "id": "2502512", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502512"}, "csaw": false, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nspi: sprd: fix error pointer deref after DMA setup failure\nThe driver falls back to PIO mode if DMA setup fails during probe.\nMake sure to check the dma.enabled flag before trying to release the DMA\nchannels also on late probe errors to avoid dereferencing an error\npointer (or attempting to release a channel a second time).\nThis issue was flagged by Sashiko when reviewing a devres allocation\nconversion patch.", "A flaw was found in the Linux kernel's spi-sprd driver. This vulnerability occurs when the driver attempts to release Direct Memory Access (DMA) channels after a DMA setup failure during the probe phase. Without properly checking if DMA is enabled, the driver may try to dereference an invalid pointer or release an already released channel, which can lead to system instability or a denial of service."], "name": "CVE-2026-64168", "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": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64168\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64168\nhttps://lore.kernel.org/linux-cve-announce/2026071935-CVE-2026-64168-2d86@gregkh/T"], "threat_severity": "Moderate"}

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