{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26664", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.148Z", "datePublished": "2024-04-02T06:22:13.341Z", "dateUpdated": "2026-08-05T11:26:38.879Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:26:38.879Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (coretemp) Fix out-of-bounds memory access\n\nFix a bug that pdata->cpu_map[] is set before out-of-bounds check.\nThe problem might be triggered on systems with more than 128 cores per\npackage." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - `create_core_data()` is only reachable through the coretemp CPU-hotplug callback (`coretemp_cpu_online()`), exercised at module load/boot and on local `/sys/devices/system/cpu/cpuN/online` writes. There is no network, adjacent-network, or removable-device path into this hwmon driver.\nAC:L - On an affected target (an Intel package with more than 128 cores, e.g. 144-core Sierra Forest sockets) the out-of-bounds write is fully deterministic — it fires on every boot and on every CPU-online cycle once the IDA index passes 127, with no race, no grooming, and no per-attempt uncertainty. Target-configuration/hardware dependence is not AC:H under CVSS 3.1.\nPR:L - The driver performs no capability or credential check anywhere on the `coretemp_cpu_online()` → `coretemp_add_core()` → `create_core_data()` path; the corruption occurs during ordinary CPU bring-up with no privilege held at all, and the runtime re-trigger is CPU hotplug. Scoring the more severe of the arguable options (boot/module-load-reachable by a low-privileged local presence) rather than requiring full root.\nUI:N - CPU onlining and coretemp initialization happen automatically as part of normal system startup and hotplug handling. No victim action of any kind is required.\nS:U - The out-of-bounds write corrupts fields inside the kernel's own `struct platform_data` allocation and the follow-on damage stays in kernel slab memory on the same host. No VM, IOMMU, or sandbox security boundary is crossed.\nC:H - Indices 135–138 overwrite `ida.xa.xa_head` two bytes at a time, leaving a near-valid kernel pointer that the next `ida_alloc_range()` dereferences via `xas_find_marked()`/`find_next_zero_bit()`, reading arbitrary kernel slab memory as an `xa_node`/`ida_bitmap`. The corrupted `pd->cpumask` also redirects `rdmsr_on_cpu()` targets for the sysfs temperature readers.\nI:H - This is an out-of-bounds write that clobbers a live kernel pointer, the xarray spinlock and flags, and the CPU mask inside `struct platform_data`. The resulting type confusion lets `__set_bit()` in `ida_alloc_range()` write into misinterpreted kernel memory, and corrupted `core_data[]`/cpumask state can drive bogus `kfree()` and stale-sysfs teardown in `coretemp_remove_core()`.\nA:H - Once `xa_head` is corrupted, the next IDA operation walks a garbage or non-canonical pointer, producing an immediate oops or GP fault; corrupting the xarray spinlock can also wedge the hotplug path. Any of these is a kernel crash or hang." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hwmon/coretemp.c" ], "versions": [ { "version": "4f9dcadc55c21b39b072bb0882362c7edc4340bc", "lessThan": "93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a", "status": "affected", "versionType": "git" }, { "version": "c00cdfc9bd767ee743ad3a4054de17aeb0afcbca", "lessThan": "1eb74c00c9c3b13cb65e508c5d5a2f11afb96b8b", "status": "affected", "versionType": "git" }, { "version": "d9f0159da05df869071164edf0c6d7302efc5eca", "lessThan": "f0da068c75c20ffc5ba28243ff577531dc2af1fd", "status": "affected", "versionType": "git" }, { "version": "30cf0dee372baf9b515f2d9c7218f905fddf3cdb", "lessThan": "a16afec8e83c56b14a4a73d2e3fb8eec3a8a057e", "status": "affected", "versionType": "git" }, { "version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": "9bce69419271eb8b2b3ab467387cb59c99d80deb", "status": "affected", "versionType": "git" }, { "version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": "853a6503c586a71abf27e60a7f8c4fb28092976d", "status": "affected", "versionType": "git" }, { "version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": "3a7753bda55985dc26fae17795cb10d825453ad1", "status": "affected", "versionType": "git" }, { "version": "7108b80a542b9d65e44b36d64a700a83658c0b73", "lessThan": "4e440abc894585a34c2904a32cd54af1742311b3", "status": "affected", "versionType": "git" }, { "version": "d1de8e1ae924d9dc31548676e4a665b52ebee27e", "status": "affected", "versionType": "git" }, { "version": "4.19.264", "lessThan": "4.19.307", "status": "affected", "versionType": "semver" }, { "version": "5.4.221", "lessThan": "5.4.269", "status": "affected", "versionType": "semver" }, { "version": "5.10.152", "lessThan": "5.10.210", "status": "affected", "versionType": "semver" }, { "version": "5.15.76", "lessThan": "5.15.149", "status": "affected", "versionType": "semver" }, { "version": "6.0.6", "lessThan": "6.1", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hwmon/coretemp.c" ], "versions": [ { "version": "6.1", "status": "affected" }, { "version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.307", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.269", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.78", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.17", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.5", "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": "4.19.264", "versionEndExcluding": "4.19.307" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.221", "versionEndExcluding": "5.4.269" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.152", "versionEndExcluding": "5.10.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.76", "versionEndExcluding": "5.15.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.1.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.7.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.6" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a" }, { "url": "https://git.kernel.org/stable/c/1eb74c00c9c3b13cb65e508c5d5a2f11afb96b8b" }, { "url": "https://git.kernel.org/stable/c/f0da068c75c20ffc5ba28243ff577531dc2af1fd" }, { "url": "https://git.kernel.org/stable/c/a16afec8e83c56b14a4a73d2e3fb8eec3a8a057e" }, { "url": "https://git.kernel.org/stable/c/9bce69419271eb8b2b3ab467387cb59c99d80deb" }, { "url": "https://git.kernel.org/stable/c/853a6503c586a71abf27e60a7f8c4fb28092976d" }, { "url": "https://git.kernel.org/stable/c/3a7753bda55985dc26fae17795cb10d825453ad1" }, { "url": "https://git.kernel.org/stable/c/4e440abc894585a34c2904a32cd54af1742311b3" } ], "title": "hwmon: (coretemp) Fix out-of-bounds memory access", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:12.458Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a", "tags": [ "x_transferred" ] }, { "url": 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