From: Eric Auger <eric.auger@redhat.com>
To: eric.auger.pro@gmail.com, eric.auger@redhat.com,
qemu-devel@nongnu.org, qemu-arm@nongnu.org,
peter.maydell@linaro.org, berrange@redhat.com,
skolothumtho@nvidia.com, nicolinc@nvidia.com, nathanc@nvidia.com
Subject: [PATCH v2 0/5] SMMUV3: STE lookup fixes
Date: Wed, 1 Jul 2026 11:11:37 +0200 [thread overview]
Message-ID: <20260701091209.2860306-1-eric.auger@redhat.com> (raw)
The current code fails to sanitize SMMU_S_STRTAB_BASE_CFG
LOG2SIZE and SPLIT which are used in the STE lookup. This
could potentially lead to wrong shifts/masks in
smmu_find_ste() and does not fully comply with the spec.
Also the series fixes different issues related to strtab base
address alignment computations: off-by-one mask, unchecked span,
missing L2ptr base address alignment. Those issues
were not visible because the guest kernel does what it should
but better comply with the spec.
Best Regards
Eric
Eric Auger (5):
hw/arm/smmuv3: Fix off-by-one bug in alignment strtab mask
hw/arm/smmuv3: Sanitize SMMU_S_STRTAB_BASE_CFG.SPLIT
hw/arm/smmuv3: Sanitize SMMU_S_STRTAB_BASE_CFG.LOG2SIZE
hw/arm/smmuv3: Check L1STD.SPAN
hw/arm/smmuv3: Enforce alignment of L2Ptr according to the span
hw/arm/smmuv3.c | 39 +++++++++++++++++++++++++++++++++------
1 file changed, 33 insertions(+), 6 deletions(-)
--
2.53.0
next reply other threads:[~2026-07-01 9:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 9:11 Eric Auger [this message]
2026-07-01 9:11 ` [PATCH v2 1/5] hw/arm/smmuv3: Fix off-by-one bug in alignment strtab mask Eric Auger
2026-07-03 9:09 ` Shameer Kolothum Thodi
2026-07-03 9:20 ` Philippe Mathieu-Daudé
2026-07-01 9:11 ` [PATCH v2 2/5] hw/arm/smmuv3: Sanitize SMMU_S_STRTAB_BASE_CFG.SPLIT Eric Auger
2026-07-01 9:11 ` [PATCH v2 3/5] hw/arm/smmuv3: Sanitize SMMU_S_STRTAB_BASE_CFG.LOG2SIZE Eric Auger
2026-07-03 9:22 ` Shameer Kolothum Thodi
2026-07-03 12:54 ` Peter Maydell
2026-07-01 9:11 ` [PATCH v2 4/5] hw/arm/smmuv3: Check L1STD.SPAN Eric Auger
2026-07-03 9:35 ` Shameer Kolothum Thodi
2026-07-01 9:11 ` [PATCH v2 5/5] hw/arm/smmuv3: Enforce alignment of L2Ptr according to the span Eric Auger
2026-07-03 9:37 ` Shameer Kolothum Thodi
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