{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-49862", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.017Z", "datePublished": "2024-10-21T12:27:19.981Z", "dateUpdated": "2026-08-05T11:40:11.029Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:40:11.029Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowercap: intel_rapl: Fix off by one in get_rpi()\n\nThe rp->priv->rpi array is either rpi_msr or rpi_tpmi which have\nNR_RAPL_PRIMITIVES number of elements. Thus the > needs to be >=\nto prevent an off by one access." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - intel_rapl is an x86 power-capping driver exposed solely through the local powercap sysfs class (/sys/class/powercap/intel-rapl:*) and in-kernel perf/PMU callbacks; there is no network or remote-peer input path.\nAC:L - The code path is entered by a simple, deterministic sysfs read with no race, no timing window, and no memory-layout dependency the attacker must first arrange.\nPR:L - The constraint_N_* attributes reaching get_rpi() are created 0644 (S_IWUSR|S_IRUGO) in seed_constraint_attributes(), so any unprivileged local user can drive get_current_power_limit() → rapl_read_pl_data() → get_rpi(); only the write side needs root.\nUI:N - Reading a sysfs file is fully attacker-driven; no victim action, mount, or file open by another user is needed.\nS:U - Both the faulty bounds check and any resulting memory access stay entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The off-by-one yields an out-of-bounds read of a full struct rapl_primitive_info past rpi_msr/rpi_tpmi, whose unvalidated ->id then indexes rd->regs[] out of bounds and produces a register handle that is read and returned to userspace through world-readable sysfs — an unbounded disclosure chain, not a few-byte bounded read.\nI:N - The unprivileged-reachable path is read-only; rapl_read_data_raw() writes nothing to kernel memory, and the only OOB-influenced register write lives behind root-only sysfs store handlers.\nA:H - An out-of-range rpi->id feeding rd->regs[] can yield a garbage MMIO handle that tpmi_rapl_read_raw() dereferences with a bare readq() behind only a NULL check, producing an oops and kernel crash." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/powercap/intel_rapl_common.c" ], "versions": [ { "version": "98ff639a7289067247b3ef9dd5d1e922361e7365", "lessThan": "288cbc505e2046638c615c36357cb78bc9fee1e0", "status": "affected", "versionType": "git" }, { "version": "98ff639a7289067247b3ef9dd5d1e922361e7365", "lessThan": "851e7f7f14a15f4e47b7d0f70d5c4a2b95b824d6", "status": "affected", "versionType": "git" }, { "version": "98ff639a7289067247b3ef9dd5d1e922361e7365", "lessThan": "6a34f3b0d7f11fb6ed72da315fd2360abd9c0737", "status": "affected", "versionType": "git" }, { "version": "98ff639a7289067247b3ef9dd5d1e922361e7365", "lessThan": "95f6580352a7225e619551febb83595bcb77ab17", "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/powercap/intel_rapl_common.c" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "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": "6.5", "versionEndExcluding": "6.6.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.10.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.11.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/288cbc505e2046638c615c36357cb78bc9fee1e0" }, { "url": "https://git.kernel.org/stable/c/851e7f7f14a15f4e47b7d0f70d5c4a2b95b824d6" }, { "url": "https://git.kernel.org/stable/c/6a34f3b0d7f11fb6ed72da315fd2360abd9c0737" }, { "url": "https://git.kernel.org/stable/c/95f6580352a7225e619551febb83595bcb77ab17" } ], "title": "powercap: intel_rapl: Fix off by one in get_rpi()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-10-21T12:54:50.217091Z", "id": "CVE-2024-49862", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-21T12:55:35.960Z" } } ] } }