iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()
Summary
| CVE | CVE-2026-68324 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-10 13:20:22 UTC |
| Updated | 2026-08-19 17:20:42 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001680000 probability, percentile 0.065070000 (date 2026-08-19)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 80f3605991461679c298ea2045c350ee3cf36de3 git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 104d89cf5b01cb66ff975d91ed42f61b3904df53 git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 3078d82e7fe9048a2b90a992e71af7cd7ef881fa git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 866a35735e56b9dc81cbc33899255134adf6d8b3 git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e d06fea9b85f038690f55e72fe0c45e113715a85a git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 0e28ca1c3204b51068579defc904a0dfba5e5c57 git | Not specified |
| CNA | Linux | Linux | affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e 754f8efe45f87e3a9c6871b645b2f9d46d1b407b git | Not specified |
| CNA | Linux | Linux | affected 5.14 | Not specified |
| CNA | Linux | Linux | unaffected 5.14 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.216 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.183 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.148 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.101 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.42 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.6 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/104d89cf5b01cb66ff975d91ed42f61b3904df53 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/80f3605991461679c298ea2045c350ee3cf36de3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.