CVE-2025-68352

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-68352", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.300Z", "datePublished": "2025-12-24T10:32:43.366Z", "dateUpdated": "2026-08-05T12:11:00.772Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:11:00.772Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: ch341: fix out-of-bounds memory access in ch341_transfer_one\n\nDiscovered by Atuin - Automated Vulnerability Discovery Engine.\n\nThe 'len' variable is calculated as 'min(32, trans->len + 1)',\nwhich includes the 1-byte command header.\n\nWhen copying data from 'trans->tx_buf' to 'ch341->tx_buf + 1', using 'len'\nas the length is incorrect because:\n\n1. It causes an out-of-bounds read from 'trans->tx_buf' (which has size\n 'trans->len', i.e., 'len - 1' in this context).\n2. It can cause an out-of-bounds write to 'ch341->tx_buf' if 'len' is\n CH341_PACKET_LENGTH (32). Writing 32 bytes to ch341->tx_buf + 1\n overflows the buffer.\n\nFix this by copying 'len - 1' bytes."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable function is reached through local write or SPI_IOC_MESSAGE operations on a provisioned spidev device. A malicious USB peripheral alone cannot trigger the faulty copy.\nAC:L - A transfer of at least 32 attacker-controlled bytes deterministically produces the one-byte overflow without a race. The attacker controls the overflowing byte and can repeat requests or perform heap grooming.\nPR:L - Binding spidev normally requires administrator provisioning, but the transfer path has no capability check. Once device-node access is granted, an ordinary unprivileged local user can trigger the bug.\nUI:N - The attacker directly opens the device and submits the transfer; no action by another user is required.\nS:U - The vulnerable SPI driver and the affected kernel memory share the same kernel security authority. This is a conventional local kernel privilege-escalation condition rather than a VM or IOMMU boundary escape.\nC:H - The out-of-bounds access can corrupt an adjacent slab object, potentially enabling control-flow hijacking and arbitrary kernel-memory disclosure. Under the required higher-severity treatment of exploitable memory corruption, confidentiality impact is high.\nI:H - For transfers of at least 32 bytes, the attacker controls the byte written beyond ch341->tx_buf. Corruption of adjacent allocator metadata or kernel objects can plausibly yield arbitrary writes or kernel code execution.\nA:H - The adjacent-object corruption can damage allocator metadata or devres list pointers, causing a kernel oops or panic. The triggering transfer can be submitted repeatedly."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi-ch341.c"], "versions": [{"version": "8846739f52afa07e63395c80227dc544f54bd7b1", "lessThan": "cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974", "status": "affected", "versionType": "git"}, {"version": "8846739f52afa07e63395c80227dc544f54bd7b1", "lessThan": "ea1e43966cd03098fcd5f0d72e6c2901d45fa08d", "status": "affected", "versionType": "git"}, {"version": "8846739f52afa07e63395c80227dc544f54bd7b1", "lessThan": "81841da1f30f66a850cc8796d99ba330aad9d696", "status": "affected", "versionType": "git"}, {"version": "8846739f52afa07e63395c80227dc544f54bd7b1", "lessThan": "545d1287e40a55242f6ab68bcc1ba3b74088b1bc", "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/spi/spi-ch341.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.63", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.13", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.2", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "6.11", "versionEndExcluding": "6.12.63"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.17.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974"}, {"url": "https://git.kernel.org/stable/c/ea1e43966cd03098fcd5f0d72e6c2901d45fa08d"}, {"url": "https://git.kernel.org/stable/c/81841da1f30f66a850cc8796d99ba330aad9d696"}, {"url": "https://git.kernel.org/stable/c/545d1287e40a55242f6ab68bcc1ba3b74088b1bc"}], "title": "spi: ch341: fix out-of-bounds memory access in ch341_transfer_one", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/spi/spi-ch341.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974", "status": "affected", "version": "8846739f52afa07e63395c80227dc544f54bd7b1", "versionType": "git"}, {"lessThan": "ea1e43966cd03098fcd5f0d72e6c2901d45fa08d", "status": "affected", "version": "8846739f52afa07e63395c80227dc544f54bd7b1", "versionType": "git"}, {"lessThan": "81841da1f30f66a850cc8796d99ba330aad9d696", "status": "affected", "version": "8846739f52afa07e63395c80227dc544f54bd7b1", "versionType": "git"}, {"lessThan": "545d1287e40a55242f6ab68bcc1ba3b74088b1bc", "status": "affected", "version": "8846739f52afa07e63395c80227dc544f54bd7b1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/spi/spi-ch341.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.63", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.13", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.19", "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\nspi: ch341: fix out-of-bounds memory access in ch341_transfer_one\n\nDiscovered by Atuin - Automated Vulnerability Discovery Engine.\n\nThe 'len' variable is calculated as 'min(32, trans->len + 1)',\nwhich includes the 1-byte command header.\n\nWhen copying data from 'trans->tx_buf' to 'ch341->tx_buf + 1', using 'len'\nas the length is incorrect because:\n\n1. It causes an out-of-bounds read from 'trans->tx_buf' (which has size\n 'trans->len', i.e., 'len - 1' in this context).\n2. It can cause an out-of-bounds write to 'ch341->tx_buf' if 'len' is\n CH341_PACKET_LENGTH (32). Writing 32 bytes to ch341->tx_buf + 1\n overflows the buffer.\n\nFix this by copying 'len - 1' bytes."}, {"lang": "es", "value": "En el kernel de Linux, se ha corregido la siguiente vulnerabilidad:\\n\\nspi: ch341: fix out-of-bounds memory access in ch341_transfer_one\\n\\nDescubierta por Atuin - Automated Vulnerability Discovery Engine.\\n\\nLa variable 'len' se calcula como 'min(32, trans -> len + 1)', lo que incluye el encabezado de comando de 1?byte.\\n\\nAl copiar datos de 'trans -> tx_buf' a 'ch341 -> tx_buf + 1', usar 'len' como longitud es incorrecto porque:\\n\\n1. Provoca una lectura fuera de los l\u00edmites de 'trans -> tx_buf' (que tiene tama\u00f1o 'trans -> len', es decir, 'len - 1' en este contexto).\\n2. Puede provocar una escritura fuera de los l\u00edmites de 'ch341 -> tx_buf' si 'len' es CH341_PACKET_LENGTH (32). Escribir 32?bytes en ch341 -> tx_buf + 1 desborda el b\u00fafer.\\n\\nCorrija esto copiando 'len - 1' bytes."}], "id": "CVE-2025-68352", "lastModified": "2026-10-19T21:10:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2025-12-24T11:15:58.550", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/545d1287e40a55242f6ab68bcc1ba3b74088b1bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/81841da1f30f66a850cc8796d99ba330aad9d696"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ea1e43966cd03098fcd5f0d72e6c2901d45fa08d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: spi: ch341: fix out-of-bounds memory access in ch341_transfer_one", "id": "2424888", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2424888"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2025-68352", "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": "2025-12-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68352\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68352\nhttps://lore.kernel.org/linux-cve-announce/2025122454-CVE-2025-68352-a3fe@gregkh/T"]}

{}