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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 80f3605991461679c298ea2045c350ee3cf36de3; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 104d89cf5b01cb66ff975d91ed42f61b3904df53; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 3078d82e7fe9048a2b90a992e71af7cd7ef881fa; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 866a35735e56b9dc81cbc33899255134adf6d8b3; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < d06fea9b85f038690f55e72fe0c45e113715a85a; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 0e28ca1c3204b51068579defc904a0dfba5e5c57; >= 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e, < 754f8efe45f87e3a9c6871b645b2f9d46d1b407b |
| Linux | Linux | 5.14 |
References
- 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
Timeline
- Published
- Aug 10, 2026
- Last modified
- Aug 19, 2026
- NVD status
- Received