243 lines
13 KiB
JSON
243 lines
13 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-2026-43476",
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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": "2026-05-01T14:12:56.011Z",
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"datePublished": "2026-05-13T15:08:26.152Z",
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"dateUpdated": "2026-08-05T12:28:11.813Z"
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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": "2026-08-05T12:28:11.813Z"
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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\niio: chemical: sps30_i2c: fix buffer size in sps30_i2c_read_meas()\n\nsizeof(num) evaluates to sizeof(size_t) (8 bytes on 64-bit) instead\nof the intended __be32 element size (4 bytes). Use sizeof(*meas) to\ncorrectly match the buffer element type."
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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 - An attacker reaches the vulnerable path by locally reading world-readable IIO sysfs channel attributes for the SPS30 I2C device, which invoke the driver read path. The bug is not exposed through a network protocol or adjacent wireless interface.\nAC:L - Triggering requires only a normal measurement read once an affected SPS30 I2C device is present; there is no race and the attacker controls repeated attempts. The 64-bit size_t condition is a common affected platform property, not an exploitation hurdle.\nPR:L - The raw IIO channel attributes are created read-only with mode 0444, so any basic local unprivileged user can trigger the vulnerable read. No CAP_SYS_ADMIN, CAP_NET_ADMIN, root-only ioctl, or user-namespace capability path is required.\nUI:N - No victim action is required after the attacker has local access. The attacker can directly read the exposed sysfs attribute.\nS:U - The memory corruption occurs in kernel driver context and affects the same kernel security authority. This is a standard local kernel compromise scenario, not a VM, IOMMU, or sandbox boundary crossing that changes scope.\nC:H - The old sizeof(num) calculation causes decoded I2C measurement data to be copied past the caller's 32-bit measurement buffer on the kernel stack. As an out-of-bounds stack write, this memory corruption is defensibly treated as capable of enabling kernel information disclosure.\nI:H - The bug is an out-of-bounds kernel stack write of up to 16 bytes on the PM10/read-buffer path, and repeated local triggering is possible. Kernel OOB writes are treated as high integrity impact because they can plausibly corrupt control data or other sensitive stack state.\nA:H - The stack corruption can crash or oops the kernel, especially with stack protector or corrupted adjacent state. Repeated unprivileged reads can therefore cause high availability impact."
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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/iio/chemical/sps30_i2c.c"
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],
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"versions": [
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{
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"version": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "9aff2e9c2927ecd9652872a43a0725f101128104",
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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": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "08881d82f94deaa51800360029908863e5c4c39d",
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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": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "dcdf1e92674efb6692f4ebe189e0aa9fde23a541",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "2a4d111a6a34afb8bb4f118009e7728ed2ec7e10",
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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": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "90e978ace598567e6e30de79805bddf37cf892ac",
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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": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "165f12b40901c6a7aca15796da239726ddcdc5ad",
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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": "8f3f130852785dac0759843835ca97c3bacc2b10",
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"lessThan": "216345f98cae7fcc84f49728c67478ac00321c87",
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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/iio/chemical/sps30_i2c.c"
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],
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"versions": [
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{
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"version": "5.14",
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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": "5.14",
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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": "5.15.203",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.167",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.130",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.78",
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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": "6.18.19",
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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": "6.19.9",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.14",
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"versionEndExcluding": "5.15.203"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/9aff2e9c2927ecd9652872a43a0725f101128104"
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{
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"url": "https://git.kernel.org/stable/c/08881d82f94deaa51800360029908863e5c4c39d"
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{
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"url": "https://git.kernel.org/stable/c/dcdf1e92674efb6692f4ebe189e0aa9fde23a541"
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},
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{
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"url": "https://git.kernel.org/stable/c/2a4d111a6a34afb8bb4f118009e7728ed2ec7e10"
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},
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{
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"url": "https://git.kernel.org/stable/c/90e978ace598567e6e30de79805bddf37cf892ac"
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"url": "https://git.kernel.org/stable/c/165f12b40901c6a7aca15796da239726ddcdc5ad"
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{
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"url": "https://git.kernel.org/stable/c/216345f98cae7fcc84f49728c67478ac00321c87"
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}
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],
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"title": "iio: chemical: sps30_i2c: fix buffer size in sps30_i2c_read_meas()",
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"x_generator": {
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