{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-26730", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.164Z", "datePublished": "2024-04-03T17:00:18.186Z", "dateUpdated": "2026-08-19T16:27:42.828Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:27:42.828Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (nct6775) Fix access to temperature configuration registers\n\nThe number of temperature configuration registers does\nnot always match the total number of temperature registers.\nThis can result in access errors reported if KASAN is enabled.\n\nBUG: KASAN: global-out-of-bounds in nct6775_probe+0x5654/0x6fe9 nct6775_core" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "baseScore": 7.3, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in the nct6775 Super-I/O hardware monitoring driver and is reached only through local driver probe on the LPC/ISA or I2C bus; there is no network, adjacent-network, or physical-access component since the monitoring chip is soldered to the board.\nAC:L - On any system with an NCT6796D-S/NCT6798D/NCT6799D-R Super-I/O chip the mismatched array bound is hit deterministically on every probe, with no race, no memory-layout dependency, and no rare kernel config involved (CONFIG_SENSORS_NCT6775 is shipped as a module by mainstream distributions).\nPR:L - The vulnerable loop is in the probe path, which executes automatically during boot or module load rather than in response to any unprivileged request; a local low-privileged context is the most that can be attributed, and PR:H is not chosen since no attacker action or elevated capability is actually needed for the defect to manifest.\nUI:N - The out-of-bounds access occurs automatically during device probe with no victim action required — no file must be opened, no filesystem mounted, and no sysfs attribute touched.\nS:U - The out-of-bounds read and the resulting bad register accesses are entirely contained within the kernel's own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - This is a genuine out-of-bounds read of kernel memory past the end of NCT6779_REG_TEMP_CONFIG, and the disclosed adjacent .rodata contents propagate into persistent driver state (data->reg_temp_config[]) where they drive further hardware register reads, so the read is treated as a High confidentiality impact per out-of-bounds-read guidance.\nI:L - The out-of-bounds values are consumed as hardware register addresses and written back via nct6775_write_value(), so the driver modifies unintended Super-I/O monitoring registers; this is real but bounded state modification, not an arbitrary kernel write or control-flow hijack primitive.\nA:H - The defect produces a KASAN global-out-of-bounds report that panics the system under panic_on_warn, and the resulting bit-clearing writes to unintended monitoring registers can misconfigure temperature sensing and fan-control state on the hwmon chip, risking thermal instability on embedded and industrial x86 platforms." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hwmon/nct6775-core.c" ], "versions": [ { "version": "4283b0e29d58c6b11e2e45a5afcab401da4e7994", "lessThan": "745aa03c513f1ba12cb98495467676f7acf3fffd", "status": "affected", "versionType": "git" }, { "version": "b7f1f7b2523a6a4382f12fe953380b847b80e09d", "lessThan": "f006c45a3ea424f8f6c8e4b9283bc245ce2a4d0f", "status": "affected", "versionType": "git" }, { "version": "b7f1f7b2523a6a4382f12fe953380b847b80e09d", "lessThan": "c196387820c9214c5ceaff56d77303c82514b8b1", "status": "affected", "versionType": "git" }, { "version": "b7f1f7b2523a6a4382f12fe953380b847b80e09d", "lessThan": "d56e460e19ea8382f813eb489730248ec8d7eb73", "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/hwmon/nct6775-core.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "6.6", "versionEndExcluding": "6.6.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.7.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/745aa03c513f1ba12cb98495467676f7acf3fffd" }, { "url": "https://git.kernel.org/stable/c/f006c45a3ea424f8f6c8e4b9283bc245ce2a4d0f" }, { "url": "https://git.kernel.org/stable/c/c196387820c9214c5ceaff56d77303c82514b8b1" }, { "url": "https://git.kernel.org/stable/c/d56e460e19ea8382f813eb489730248ec8d7eb73" } ], "title": "hwmon: (nct6775) Fix access to temperature configuration registers", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:12.970Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/f006c45a3ea424f8f6c8e4b9283bc245ce2a4d0f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c196387820c9214c5ceaff56d77303c82514b8b1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d56e460e19ea8382f813eb489730248ec8d7eb73", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26730", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:52:03.714243Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:21.224Z" } } ] } }