{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38395", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.011Z", "datePublished": "2025-07-25T12:53:39.933Z", "dateUpdated": "2026-08-05T12:01:33.139Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:33.139Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: gpio: Fix the out-of-bounds access to drvdata::gpiods\n\ndrvdata::gpiods is supposed to hold an array of 'gpio_desc' pointers. But\nthe memory is allocated for only one pointer. This will lead to\nout-of-bounds access later in the code if 'config::ngpios' is > 1. So\nfix the code to allocate enough memory to hold 'config::ngpios' of GPIO\ndescriptors.\n\nWhile at it, also move the check for memory allocation failure to be below\nthe allocation to make it more readable." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is in a platform driver bound from device-tree/ACPI data on the local system; the out-of-bounds write occurs in local kernel context during probe with no network or physical interaction required for the corruption itself. Matches the AV:L convention used for analogous probe-time allocation-size bugs such as CVE-2025-39869 and CVE-2025-38446.\nAC:L - On any affected board the overflow is fully deterministic — it fires on every single boot with no race, no timing window, and no dependence on unpredictable state, since ngpios>=2 is a binding-documented configuration (maxItems: 8, and the binding's own example uses 2 GPIOs). No condition beyond the attacker's control must be won per attempt.\nPR:N - The out-of-bounds write executes during subsys_initcall driver probe at boot, before any user logs in or is authenticated, so zero privileges are required for the memory corruption to occur. This matches the PR:N assignment given to the directly analogous probe-time undersized-allocation heap overflow in CVE-2025-39869.\nUI:N - No victim action is needed; the corruption happens automatically when the gpio-regulator driver probes the device, and the subsequent out-of-bounds reads occur on routine in-kernel regulator voltage changes.\nS:U - The heap corruption and the wild-pointer dereferences are confined to kernel memory managed by the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Beyond the OOB write, gpio_regulator_set_voltage() and gpio_regulator_set_current_limit() read gpiods[0..nr_gpios-1] past the 8-byte allocation and treat adjacent slab contents as struct gpio_desc pointers, exposing kernel heap data; a heap overflow of this kind is leverageable for arbitrary read.\nI:H - Up to seven attacker/firmware-influenced pointer values are written past the end of the allocation into an adjacent slab object, and the out-of-bounds pointers are then passed to gpiod_set_value_cansleep(), yielding a controlled write primitive exploitable for control-flow hijacking.\nA:H - Slab corruption plus dereference of out-of-bounds heap data as gpio_desc pointers reliably produces a kernel oops or panic — the identical bug class in CVE-2025-39869 manifested as \"Oops - undefined instruction\" crashes during driver probe." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/regulator/gpio-regulator.c" ], "versions": [ { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "a3cd5ae7befbac849e0e0529c94ca04e8093cfd2", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "9fe71972869faed1f8f9b3beb9040f9c1b300c79", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "56738cbac3bbb1d39a71a07f57484dec1db8b239", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "a1e12fac214d4f49fcb186dbdf9c5592e7fa0a7a", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "24418bc77a66cb5be9f5a837431ba3674ed8b52f", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "e4d19e5d71b217940e33f2ef6c6962b7b68c5606", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "3830ab97cda9599872625cc0dc7b00160193634f", "status": "affected", "versionType": "git" }, { "version": "d6cd33ad71029a3f77ba1686caf55d4dea58d916", "lessThan": "c9764fd88bc744592b0604ccb6b6fc1a5f76b4e3", "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/regulator/gpio-regulator.c" ], "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.296", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.240", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.187", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.144", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.97", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.6", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "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": "5.1", "versionEndExcluding": "5.4.296" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.240" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.187" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1.144" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.6.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.12.37" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.15.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a3cd5ae7befbac849e0e0529c94ca04e8093cfd2" }, { "url": "https://git.kernel.org/stable/c/9fe71972869faed1f8f9b3beb9040f9c1b300c79" }, { "url": "https://git.kernel.org/stable/c/56738cbac3bbb1d39a71a07f57484dec1db8b239" }, { "url": "https://git.kernel.org/stable/c/a1e12fac214d4f49fcb186dbdf9c5592e7fa0a7a" }, { "url": "https://git.kernel.org/stable/c/24418bc77a66cb5be9f5a837431ba3674ed8b52f" }, { "url": "https://git.kernel.org/stable/c/e4d19e5d71b217940e33f2ef6c6962b7b68c5606" }, { "url": "https://git.kernel.org/stable/c/3830ab97cda9599872625cc0dc7b00160193634f" }, { "url": "https://git.kernel.org/stable/c/c9764fd88bc744592b0604ccb6b6fc1a5f76b4e3" } ], "title": "regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:37:28.806Z" } } ] } }