CVE-2024-49860

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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 \u2014 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 \u2014 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 \u2014 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 \u2014 the output is correctly bounded to the sysfs page \u2014 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 \u2014 a full panic on the panic_on_oops configurations common in embedded, automotive, and production deployments."}]}], 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"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", 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Solo los objetos de b\u00fafer son valores de retorno v\u00e1lidos de _STR. Si se devuelve algo diferente, description_show() acceder\u00e1 a memoria no v\u00e1lida."}], "id": "CVE-2024-49860", "lastModified": "2026-08-04T11:20:52.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.5, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-49860", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-21T12:55:46.676497Z", "version": "2.0.3"}}]}, "published": "2024-10-21T13:15:06.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0cdfb9178a3bba843c95c2117c82c15f1a64b9ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2364b6af90c6b6d8a4783e0d3481ca80af699554"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4b081991c4363e072e1748efed0bbec8a77daba5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4bb1e7d027413835b086aed35bc3f0713bc0f72b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5c8d007c14aefc3f2ddf71e4c40713733dc827be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92fd5209fc014405f63a7db79802ca4b01dc0c05"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f0921ecd4ddc14646bb5511f49db4d7d3b0829f0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f51e5a88f2e7224858b261546cf6b3037dfb1323"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f51f711d36e61fbb87c67b524fd200e05172668d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-843"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: ACPI: sysfs: validate return type of _STR method", "id": "2320200", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320200"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "verified"}, "cwe": "CWE-843", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nACPI: sysfs: validate return type of _STR method\nOnly buffer objects are valid return values of _STR.\nIf something else is returned description_show() will access invalid\nmemory."], "name": "CVE-2024-49860", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-49860\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-49860\nhttps://lore.kernel.org/linux-cve-announce/2024102124-CVE-2024-49860-2a48@gregkh/T"], "threat_severity": "Moderate"}

{}