{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-49860", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.017Z", "datePublished": "2024-10-21T12:27:18.640Z", "dateUpdated": "2026-08-05T11:40:08.879Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:40:08.879Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: sysfs: validate return type of _STR method\n\nOnly buffer objects are valid return values of _STR.\n\nIf something else is returned description_show() will access invalid\nmemory." } ], "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 vulnerable code is reached by reading the world-readable sysfs attribute /sys/bus/acpi/devices//description, which requires a local account (or a container/sandbox with /sys mounted). There is no network or physical-access requirement for the reading attacker.\nAC:L - On an affected platform a single read(2) of the sysfs file deterministically hits the type-confused dereference — no race, no memory-layout grooming, and no ASLR bypass is needed, and the read can be repeated at will since str_obj is cached at boot.\nPR:L - The description attribute is created via DEVICE_ATTR_RO (mode 0444) under a world-traversable /sys/bus/acpi/devices/ tree, so any unprivileged local user can read it; no capability, user namespace, or root access is required.\nUI:N - Exploitation consists solely of the attacker opening and reading a sysfs file; no victim action, mount, or configuration change is involved.\nS:U - The invalid access and its consequences are entirely within the kernel's own security authority — there is no hypervisor, IOMMU, or other security-boundary crossing.\nC:H - The type confusion feeds a firmware-supplied pointer and length into utf16s_to_utf8s(), whose output is copied straight to userspace — yielding an out-of-bounds heap read past the ACPI object (STRING case), disclosure of raw kernel pointers from the elements array (PACKAGE case), or a fully controlled arbitrary-address read (PROCESSOR/pblk_address on 64-bit, INTEGER on 32-bit), up to 4095 bytes per read and repeatable.\nI:L - No write primitive exists — the output is correctly bounded to the sysfs page — but the confusion makes the kernel dereference a firmware-controlled address that is semantically an I/O address, so reads landing on direct-mapped MMIO can alter device state through read-side-effect registers, a limited and non-targeted modification.\nA:H - The confused pointer is a NULL/low address in the POWER case and an arbitrary or out-of-bounds address in the others, so an unprivileged read reliably produces a kernel oops — a full panic on the panic_on_oops configurations common in embedded, automotive, and production deployments." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/acpi/device_sysfs.c" ], "versions": [ { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "92fd5209fc014405f63a7db79802ca4b01dc0c05", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "2364b6af90c6b6d8a4783e0d3481ca80af699554", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "4b081991c4363e072e1748efed0bbec8a77daba5", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "0cdfb9178a3bba843c95c2117c82c15f1a64b9ce", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "5c8d007c14aefc3f2ddf71e4c40713733dc827be", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "f0921ecd4ddc14646bb5511f49db4d7d3b0829f0", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "f51e5a88f2e7224858b261546cf6b3037dfb1323", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "f51f711d36e61fbb87c67b524fd200e05172668d", "status": "affected", "versionType": "git" }, { "version": "d1efe3c324ead77d3f6cd85093b50f6bd2e17aba", "lessThan": "4bb1e7d027413835b086aed35bc3f0713bc0f72b", "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/acpi/device_sysfs.c" ], "versions": [ { "version": "3.7", "status": "affected" }, { "version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.227", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.168", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.113", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.54", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.13", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.2", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "3.7", "versionEndExcluding": "4.19.323" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.4.285" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.227" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.168" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.113" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.6.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.10.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.11.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/92fd5209fc014405f63a7db79802ca4b01dc0c05" }, { "url": "https://git.kernel.org/stable/c/2364b6af90c6b6d8a4783e0d3481ca80af699554" }, { "url": "https://git.kernel.org/stable/c/4b081991c4363e072e1748efed0bbec8a77daba5" }, { "url": "https://git.kernel.org/stable/c/0cdfb9178a3bba843c95c2117c82c15f1a64b9ce" }, { "url": "https://git.kernel.org/stable/c/5c8d007c14aefc3f2ddf71e4c40713733dc827be" }, { "url": "https://git.kernel.org/stable/c/f0921ecd4ddc14646bb5511f49db4d7d3b0829f0" }, { "url": "https://git.kernel.org/stable/c/f51e5a88f2e7224858b261546cf6b3037dfb1323" }, { "url": "https://git.kernel.org/stable/c/f51f711d36e61fbb87c67b524fd200e05172668d" }, { "url": "https://git.kernel.org/stable/c/4bb1e7d027413835b086aed35bc3f0713bc0f72b" } ], "title": "ACPI: sysfs: validate return type of _STR method", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-49860", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-21T12:55:46.676497Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T13:04:10.485Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:22:30.053Z" } } ] } }