CVE-2026-68324

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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57
https://git.kernel.org/stable/c/104d89cf5b01cb66ff975d91ed42f61b3904df53
https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa
https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b
https://git.kernel.org/stable/c/80f3605991461679c298ea2045c350ee3cf36de3
https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3
https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-19 17:20

NVD link : CVE-2026-68324

Mitre link : CVE-2026-68324

CVE.ORG link : CVE-2026-68324

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-68324", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "80f3605991461679c298ea2045c350ee3cf36de3", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "104d89cf5b01cb66ff975d91ed42f61b3904df53", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "3078d82e7fe9048a2b90a992e71af7cd7ef881fa", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "866a35735e56b9dc81cbc33899255134adf6d8b3", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "d06fea9b85f038690f55e72fe0c45e113715a85a", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "0e28ca1c3204b51068579defc904a0dfba5e5c57", "versionType": "git"}, {"status": "affected", "version": "55ee5e67a59a1b6f388d7a1c7b24022145f47a3e", "lessThan": "754f8efe45f87e3a9c6871b645b2f9d46d1b407b", "versionType": "git"}], "programFiles": ["drivers/iommu/intel/perf.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"status": "unaffected", "version": "0", "lessThan": "5.14", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/iommu/intel/perf.c"], "defaultStatus": "affected"}]}], "published": "2026-08-10T13:20:22.550", "references": [{"url": "https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/104d89cf5b01cb66ff975d91ed42f61b3904df53", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/80f3605991461679c298ea2045c350ee3cf36de3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "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 &lstat[type].\n\nWhen type > 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."}], "lastModified": "2026-08-19T17:20:42.567", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}