diff options
| author | Konstantin Belousov <kib@FreeBSD.org> | 2023-12-26 00:57:00 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2023-12-26 01:28:22 +0000 |
| commit | a869643e184a73382ef7939b465fd42785e096d1 (patch) | |
| tree | b782cc5ce5248ef25575e2924248f966b5f0a959 | |
| parent | 7153d5e4bc67732f8258d50ffffa42a09a19b427 (diff) | |
iommu_gas_match_one(): check for underflow
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
| -rw-r--r-- | sys/dev/iommu/iommu_gas.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/iommu/iommu_gas.c b/sys/dev/iommu/iommu_gas.c index 4e0bfb116116..cc541e748f48 100644 --- a/sys/dev/iommu/iommu_gas.c +++ b/sys/dev/iommu/iommu_gas.c @@ -329,6 +329,8 @@ iommu_gas_match_one(struct iommu_gas_match_args *a, iommu_gaddr_t beg, start = roundup2(beg, a->common->alignment); if (start < beg) return (false); + if (end < IOMMU_PAGE_SIZE + 1) + return (false); end = MIN(end - IOMMU_PAGE_SIZE - 1, ubound); offset = a->offset; size = a->size; |