180 lines
9.7 KiB
JSON
180 lines
9.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-68352",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-16T14:48:05.300Z",
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"datePublished": "2025-12-24T10:32:43.366Z",
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"dateUpdated": "2026-08-05T12:11:00.772Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:11:00.772Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/spi/spi-ch341.c"
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],
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"versions": [
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{
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"version": "8846739f52afa07e63395c80227dc544f54bd7b1",
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"lessThan": "cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8846739f52afa07e63395c80227dc544f54bd7b1",
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"lessThan": "ea1e43966cd03098fcd5f0d72e6c2901d45fa08d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8846739f52afa07e63395c80227dc544f54bd7b1",
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"lessThan": "81841da1f30f66a850cc8796d99ba330aad9d696",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8846739f52afa07e63395c80227dc544f54bd7b1",
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"lessThan": "545d1287e40a55242f6ab68bcc1ba3b74088b1bc",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/spi/spi-ch341.c"
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],
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"versions": [
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{
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"version": "6.11",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.11",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.63",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.17.13",
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"lessThanOrEqual": "6.17.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.2",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11",
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"versionEndExcluding": "6.12.63"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11",
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"versionEndExcluding": "6.17.13"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11",
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"versionEndExcluding": "6.18.2"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.11",
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"versionEndExcluding": "6.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cad6c0fd6f3c0e76a1f75df4bce3b08a13f08974"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea1e43966cd03098fcd5f0d72e6c2901d45fa08d"
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},
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{
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"url": "https://git.kernel.org/stable/c/81841da1f30f66a850cc8796d99ba330aad9d696"
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},
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{
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"url": "https://git.kernel.org/stable/c/545d1287e40a55242f6ab68bcc1ba3b74088b1bc"
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}
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],
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"title": "spi: ch341: fix out-of-bounds memory access in ch341_transfer_one",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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} |