{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43476", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.011Z", "datePublished": "2026-05-13T15:08:26.152Z", "dateUpdated": "2026-08-05T12:28:11.813Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:28:11.813Z" }, "descriptions": [ { "lang": "en", "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." } ], "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 - 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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/iio/chemical/sps30_i2c.c" ], "versions": [ { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "9aff2e9c2927ecd9652872a43a0725f101128104", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "08881d82f94deaa51800360029908863e5c4c39d", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "dcdf1e92674efb6692f4ebe189e0aa9fde23a541", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "2a4d111a6a34afb8bb4f118009e7728ed2ec7e10", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "90e978ace598567e6e30de79805bddf37cf892ac", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "165f12b40901c6a7aca15796da239726ddcdc5ad", "status": "affected", "versionType": "git" }, { "version": "8f3f130852785dac0759843835ca97c3bacc2b10", "lessThan": "216345f98cae7fcc84f49728c67478ac00321c87", "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/iio/chemical/sps30_i2c.c" ], "versions": [ { "version": "5.14", "status": "affected" }, { "version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.9", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "5.14", "versionEndExcluding": "5.15.203" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.1.167" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.130" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.19.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9aff2e9c2927ecd9652872a43a0725f101128104" }, { "url": "https://git.kernel.org/stable/c/08881d82f94deaa51800360029908863e5c4c39d" }, { "url": "https://git.kernel.org/stable/c/dcdf1e92674efb6692f4ebe189e0aa9fde23a541" }, { "url": "https://git.kernel.org/stable/c/2a4d111a6a34afb8bb4f118009e7728ed2ec7e10" }, { "url": "https://git.kernel.org/stable/c/90e978ace598567e6e30de79805bddf37cf892ac" }, { "url": "https://git.kernel.org/stable/c/165f12b40901c6a7aca15796da239726ddcdc5ad" }, { "url": "https://git.kernel.org/stable/c/216345f98cae7fcc84f49728c67478ac00321c87" } ], "title": "iio: chemical: sps30_i2c: fix buffer size in sps30_i2c_read_meas()", "x_generator": { "engine": "bippy-1.2.0" } } } }