CVE-2026-72481

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If\ni2c_smbus_read_i2c_block_data_or_emulated() returns a value less than\nthe size of the buffer, uninitialized bytes are retained in the buffer\nand later the buffer is passed on to IIO buffers, potentially leaking\nmemory to userspace.\n\nFix this by adding checks whether the return value of the function is\nequal to the size of the buffer and subsequently if the value is\nlesser than zero to distinguish from a returned error code."}], "id": "CVE-2026-72481", "lastModified": "2026-11-06T17:19:44.800", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72481", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:55:37.682804Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:22.313", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/12848f4ded022963944c063e09a192549a4dad1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d57672119525c59ed73ea21accb001ccbcd6cfd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8cf346074533356d67a6a6a43a192328ad341f11"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f920550abacedc7fc3163dea65ac2a7d0b0765d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a9a00d727b7bbc5e913a919530a9dd468935bf95"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a9cf46054f81972f8c0f1dc2a79d2a141999dbce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b974566803bceb72f0b9b5f1d7270b79ba963766"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb27ebf81136e796c7b719303ef6fd7e1ae5d488"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: iio: magnetometer: ak8975: fix potential kernel stack memory leak", "id": "2516339", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516339"}, "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-908", "details": ["A flaw was found in the Linux kernel's `iio: magnetometer: ak8975` driver. This vulnerability occurs when the `i2c_smbus_read_i2c_block_data_or_emulated()` function returns fewer bytes than expected, leaving uninitialized data in a buffer. A local attacker with access to IIO (Industrial Input/Output) buffers could potentially exploit this to read sensitive information from the kernel stack memory, leading to information disclosure."], "name": "CVE-2026-72481", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72481\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72481\nhttps://lore.kernel.org/linux-cve-announce/2026081537-CVE-2026-72481-55c6@gregkh/T"], "threat_severity": "Moderate"}

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