Action not permitted
Modal body text goes here.
Modal Title
Modal Body
EUVD-2026-320772
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 07:42
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T07:42:42.703090+00:00",
"id": "EUVD-2026-320772"
}
CVE-2024-57951 (GCVE-0-2024-57951)
Vulnerability from cvelistv5 – Published: 2025-02-12 13:27 – Updated: 2026-05-23 15:56
VLAI
EPSS
VEX
Title
hrtimers: Handle CPU state correctly on hotplug
Summary
In the Linux kernel, the following vulnerability has been resolved:
hrtimers: Handle CPU state correctly on hotplug
Consider a scenario where a CPU transitions from CPUHP_ONLINE to halfway
through a CPU hotunplug down to CPUHP_HRTIMERS_PREPARE, and then back to
CPUHP_ONLINE:
Since hrtimers_prepare_cpu() does not run, cpu_base.hres_active remains set
to 1 throughout. However, during a CPU unplug operation, the tick and the
clockevents are shut down at CPUHP_AP_TICK_DYING. On return to the online
state, for instance CFS incorrectly assumes that the hrtick is already
active, and the chance of the clockevent device to transition to oneshot
mode is also lost forever for the CPU, unless it goes back to a lower state
than CPUHP_HRTIMERS_PREPARE once.
This round-trip reveals another issue; cpu_base.online is not set to 1
after the transition, which appears as a WARN_ON_ONCE in enqueue_hrtimer().
Aside of that, the bulk of the per CPU state is not reset either, which
means there are dangling pointers in the worst case.
Address this by adding a corresponding startup() callback, which resets the
stale per CPU state and sets the online flag.
[ tglx: Make the new callback unconditionally available, remove the online
modification in the prepare() callback and clear the remaining
state in the starting callback instead of the prepare callback ]
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:51 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
11 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
54d0d83a53508d687fd4a225f8aa1f18559562d0 , < 95e4f62df23f4df1ce6ef897d44b8e23c260921a
(git)
Affected: 7f4c89400d2997939f6971c7981cc780a219e36b , < 14984139f1f2768883332965db566ef26db609e7 (git) Affected: 6fcbcc6c8e52650749692c7613cbe71bf601670d , < 15b453db41d36184cf0ccc21e7df624014ab6a1a (git) Affected: 75b5016ce325f1ef9c63e5398a1064cf8a7a7354 , < 3d41dbf82e10c44e53ea602398ab002baec27e75 (git) Affected: 53f408cad05bb987af860af22f4151e5a18e6ee8 , < a5cbbea145b400e40540c34816d16d36e0374fbc (git) Affected: 5c0930ccaad5a74d74e8b18b648c5eb21ed2fe94 , < 38492f6ee883c7b1d33338bf531a62cff69b4b28 (git) Affected: 5c0930ccaad5a74d74e8b18b648c5eb21ed2fe94 , < 2f8dea1692eef2b7ba6a256246ed82c365fdc686 (git) Affected: 9a2fc41acb69dd4e2a58d0c04346c3333c2341fc (git) Affected: 5.4.264 , < 5.4.290 (semver) Affected: 5.10.204 , < 5.10.234 (semver) Affected: 5.15.143 , < 5.15.177 (semver) Affected: 6.1.68 , < 6.1.127 (semver) Affected: 6.6.7 , < 6.6.74 (semver) Affected: 4.19.302 , < 4.20 (semver) |
|
| Linux | Linux |
Affected:
6.7
Unaffected: 0 , < 6.7 (semver) Unaffected: 5.4.290 , ≤ 5.4.* (semver) Unaffected: 5.10.234 , ≤ 5.10.* (semver) Unaffected: 5.15.177 , ≤ 5.15.* (semver) Unaffected: 6.1.127 , ≤ 6.1.* (semver) Unaffected: 6.6.74 , ≤ 6.6.* (semver) Unaffected: 6.12.11 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix) |
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 family |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-57951",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-10-01T19:51:21.225809Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-01T19:57:09.911Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2025-11-03T20:56:20.172Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "RUGGEDCOM RST2428P",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V3.2",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V3.2",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V3.2",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T12:01:42.685Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
}
],
"x_adpType": "supplier"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"include/linux/hrtimer.h",
"kernel/cpu.c",
"kernel/time/hrtimer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "95e4f62df23f4df1ce6ef897d44b8e23c260921a",
"status": "affected",
"version": "54d0d83a53508d687fd4a225f8aa1f18559562d0",
"versionType": "git"
},
{
"lessThan": "14984139f1f2768883332965db566ef26db609e7",
"status": "affected",
"version": "7f4c89400d2997939f6971c7981cc780a219e36b",
"versionType": "git"
},
{
"lessThan": "15b453db41d36184cf0ccc21e7df624014ab6a1a",
"status": "affected",
"version": "6fcbcc6c8e52650749692c7613cbe71bf601670d",
"versionType": "git"
},
{
"lessThan": "3d41dbf82e10c44e53ea602398ab002baec27e75",
"status": "affected",
"version": "75b5016ce325f1ef9c63e5398a1064cf8a7a7354",
"versionType": "git"
},
{
"lessThan": "a5cbbea145b400e40540c34816d16d36e0374fbc",
"status": "affected",
"version": "53f408cad05bb987af860af22f4151e5a18e6ee8",
"versionType": "git"
},
{
"lessThan": "38492f6ee883c7b1d33338bf531a62cff69b4b28",
"status": "affected",
"version": "5c0930ccaad5a74d74e8b18b648c5eb21ed2fe94",
"versionType": "git"
},
{
"lessThan": "2f8dea1692eef2b7ba6a256246ed82c365fdc686",
"status": "affected",
"version": "5c0930ccaad5a74d74e8b18b648c5eb21ed2fe94",
"versionType": "git"
},
{
"status": "affected",
"version": "9a2fc41acb69dd4e2a58d0c04346c3333c2341fc",
"versionType": "git"
},
{
"lessThan": "5.4.290",
"status": "affected",
"version": "5.4.264",
"versionType": "semver"
},
{
"lessThan": "5.10.234",
"status": "affected",
"version": "5.10.204",
"versionType": "semver"
},
{
"lessThan": "5.15.177",
"status": "affected",
"version": "5.15.143",
"versionType": "semver"
},
{
"lessThan": "6.1.127",
"status": "affected",
"version": "6.1.68",
"versionType": "semver"
},
{
"lessThan": "6.6.74",
"status": "affected",
"version": "6.6.7",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.302",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/linux/hrtimer.h",
"kernel/cpu.c",
"kernel/time/hrtimer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"lessThan": "6.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.290",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.234",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.177",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.127",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.74",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.290",
"versionStartIncluding": "5.4.264",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.234",
"versionStartIncluding": "5.10.204",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.177",
"versionStartIncluding": "5.15.143",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.127",
"versionStartIncluding": "6.1.68",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.74",
"versionStartIncluding": "6.6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.11",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.302",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhrtimers: Handle CPU state correctly on hotplug\n\nConsider a scenario where a CPU transitions from CPUHP_ONLINE to halfway\nthrough a CPU hotunplug down to CPUHP_HRTIMERS_PREPARE, and then back to\nCPUHP_ONLINE:\n\nSince hrtimers_prepare_cpu() does not run, cpu_base.hres_active remains set\nto 1 throughout. However, during a CPU unplug operation, the tick and the\nclockevents are shut down at CPUHP_AP_TICK_DYING. On return to the online\nstate, for instance CFS incorrectly assumes that the hrtick is already\nactive, and the chance of the clockevent device to transition to oneshot\nmode is also lost forever for the CPU, unless it goes back to a lower state\nthan CPUHP_HRTIMERS_PREPARE once.\n\nThis round-trip reveals another issue; cpu_base.online is not set to 1\nafter the transition, which appears as a WARN_ON_ONCE in enqueue_hrtimer().\n\nAside of that, the bulk of the per CPU state is not reset either, which\nmeans there are dangling pointers in the worst case.\n\nAddress this by adding a corresponding startup() callback, which resets the\nstale per CPU state and sets the online flag.\n\n[ tglx: Make the new callback unconditionally available, remove the online\n \tmodification in the prepare() callback and clear the remaining\n \tstate in the starting callback instead of the prepare callback ]"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T15:56:26.236Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/95e4f62df23f4df1ce6ef897d44b8e23c260921a"
},
{
"url": "https://git.kernel.org/stable/c/14984139f1f2768883332965db566ef26db609e7"
},
{
"url": "https://git.kernel.org/stable/c/15b453db41d36184cf0ccc21e7df624014ab6a1a"
},
{
"url": "https://git.kernel.org/stable/c/3d41dbf82e10c44e53ea602398ab002baec27e75"
},
{
"url": "https://git.kernel.org/stable/c/a5cbbea145b400e40540c34816d16d36e0374fbc"
},
{
"url": "https://git.kernel.org/stable/c/38492f6ee883c7b1d33338bf531a62cff69b4b28"
},
{
"url": "https://git.kernel.org/stable/c/2f8dea1692eef2b7ba6a256246ed82c365fdc686"
}
],
"title": "hrtimers: Handle CPU state correctly on hotplug",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-57951",
"datePublished": "2025-02-12T13:27:53.124Z",
"dateReserved": "2025-01-19T11:50:08.381Z",
"dateUpdated": "2026-05-23T15:56:26.236Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…
Loading…