Date: Tue, 2 Jan 2024 00:42:37 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: f7d120eca071 - stable/13 - iommu_gas_match_one(): check for underflow Message-ID: <202401020042.4020gbXN003850@gitrepo.freebsd.org>
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The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=f7d120eca071bb5b259f3ccce511ea059205b594 commit f7d120eca071bb5b259f3ccce511ea059205b594 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2023-12-26 00:57:00 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2024-01-02 00:42:12 +0000 iommu_gas_match_one(): check for underflow (cherry picked from commit a869643e184a73382ef7939b465fd42785e096d1) --- sys/dev/iommu/iommu_gas.c | 2 ++ 1 file changed, 2 insertions(+) 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;
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