CVE-2026-68324
iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 10, 2026 |
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Affected Versions
Linux / Linux
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e < 3078d82e7fe9048a2b90a992e71af7cd7ef881fa 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e < 866a35735e56b9dc81cbc33899255134adf6d8b3 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e < d06fea9b85f038690f55e72fe0c45e113715a85a 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e < 0e28ca1c3204b51068579defc904a0dfba5e5c57 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e < 754f8efe45f87e3a9c6871b645b2f9d46d1b407b
Linux / Linux
5.14
References
git.kernel.org: https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa git.kernel.org: https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3 git.kernel.org: https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a git.kernel.org: https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57 git.kernel.org: https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b