CVE-2026-68324 (GCVE-0-2026-68324)
Vulnerability from cvelistv5
Published
2026-08-10 12:03
Modified
2026-08-19 16:33
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()
dmar_latency_disable() intends to zero out only the single
latency_statistic entry for the given type, but the memset size was
computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire
array starting from &lstat[type].
When type > 0, this writes beyond the end of the allocated array,
corrupting adjacent memory.
Fix by using sizeof(*lstat) to clear only the target entry.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e Version: 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e |
||
{
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{
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"version": "0",
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{
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"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
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{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
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},
{
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"status": "unaffected",
"version": "6.18.42",
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{
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"status": "unaffected",
"version": "7.1.6",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/intel: Fix out-of-bounds memset in dmar_latency_disable()\n\ndmar_latency_disable() intends to zero out only the single\nlatency_statistic entry for the given type, but the memset size was\ncomputed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire\narray starting from \u0026lstat[type].\n\nWhen type \u003e 0, this writes beyond the end of the allocated array,\ncorrupting adjacent memory.\n\nFix by using sizeof(*lstat) to clear only the target entry."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:33:15.575Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/80f3605991461679c298ea2045c350ee3cf36de3"
},
{
"url": "https://git.kernel.org/stable/c/104d89cf5b01cb66ff975d91ed42f61b3904df53"
},
{
"url": "https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa"
},
{
"url": "https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3"
},
{
"url": "https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a"
},
{
"url": "https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57"
},
{
"url": "https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b"
}
],
"title": "iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-68324",
"datePublished": "2026-08-10T12:03:00.073Z",
"dateReserved": "2026-07-30T09:28:09.382Z",
"dateUpdated": "2026-08-19T16:33:15.575Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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