CVE-2024-26664 (GCVE-0-2024-26664)
Vulnerability from cvelistv5 – Published: 2024-04-02 06:22 – Updated: 2026-08-05 11:26
VLAI
EPSS
VEX
Title
hwmon: (coretemp) Fix out-of-bounds memory access
Summary
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (coretemp) Fix out-of-bounds memory access
Fix a bug that pdata->cpu_map[] is set before out-of-bounds check.
The problem might be triggered on systems with more than 128 cores per
package.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:53 UTC
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
4f9dcadc55c21b39b072bb0882362c7edc4340bc , < 93f0f4e846fcb682c3ec436e3b2e30e5a3a8ee6a
(git)
Affected: c00cdfc9bd767ee743ad3a4054de17aeb0afcbca , < 1eb74c00c9c3b13cb65e508c5d5a2f11afb96b8b (git) Affected: d9f0159da05df869071164edf0c6d7302efc5eca , < f0da068c75c20ffc5ba28243ff577531dc2af1fd (git) Affected: 30cf0dee372baf9b515f2d9c7218f905fddf3cdb , < a16afec8e83c56b14a4a73d2e3fb8eec3a8a057e (git) Affected: 7108b80a542b9d65e44b36d64a700a83658c0b73 , < 9bce69419271eb8b2b3ab467387cb59c99d80deb (git) Affected: 7108b80a542b9d65e44b36d64a700a83658c0b73 , < 853a6503c586a71abf27e60a7f8c4fb28092976d (git) Affected: 7108b80a542b9d65e44b36d64a700a83658c0b73 , < 3a7753bda55985dc26fae17795cb10d825453ad1 (git) Affected: 7108b80a542b9d65e44b36d64a700a83658c0b73 , < 4e440abc894585a34c2904a32cd54af1742311b3 (git) Affected: d1de8e1ae924d9dc31548676e4a665b52ebee27e (git) Affected: 4.19.264 , < 4.19.307 (semver) Affected: 5.4.221 , < 5.4.269 (semver) Affected: 5.10.152 , < 5.10.210 (semver) Affected: 5.15.76 , < 5.15.149 (semver) Affected: 6.0.6 , < 6.1 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.1
Unaffected: 0 , < 6.1 (semver) Unaffected: 4.19.307 , ≤ 4.19.* (semver) Unaffected: 5.4.269 , ≤ 5.4.* (semver) Unaffected: 5.10.210 , ≤ 5.10.* (semver) Unaffected: 5.15.149 , ≤ 5.15.* (semver) Unaffected: 6.1.78 , ≤ 6.1.* (semver) Unaffected: 6.6.17 , ≤ 6.6.* (semver) Unaffected: 6.7.5 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix) |
guessed |
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1"
},
{
"lessThan": "6.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.307",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.269",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.210",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.149",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.78",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"version": "6.7.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.307",
"versionStartIncluding": "4.19.264",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.269",
"versionStartIncluding": "5.4.221",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.210",
"versionStartIncluding": "5.10.152",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.149",
"versionStartIncluding": "5.15.76",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.78",
"versionStartIncluding": "6.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.17",
"versionStartIncluding": "6.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.7.5",
"versionStartIncluding": "6.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.8",
"versionStartIncluding": "6.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.0.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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-\u003ecpu_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": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"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 \u2014 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()` \u2192 `coretemp_add_core()` \u2192 `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\u0027s 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\u2013138 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-\u003ecpumask` 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."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:26:38.879Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-26664",
"datePublished": "2024-04-02T06:22:13.341Z",
"dateReserved": "2024-02-19T14:20:24.148Z",
"dateUpdated": "2026-08-05T11:26:38.879Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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