- OP-TEE - lists.trustedfirmware.org

[PATCH v6 0/6] arm_ffa, KVM: Fix FF-A emad offset calculations

by Mostafa Saleh

Hi all, This series fixes the Endpoint Memory Access Descriptor (EMAD) offset calculations and adds the necessary bounds checks for both the core FF-A driver and the pKVM hypervisor. Prior to FF-A version 1.1, the memory region header didn't specify an explicit offset for the EMADs, leading to the assumption that they immediately follow the header. However, from v1.1 onwards, the specification dictates using the ep_mem_offset` field to determine the start of the memory access array. The patches in this series address this by: 1. Updating the core `arm_ffa` firmware driver to correctly calculate the descriptor offset using `ep_mem_offset` rather than defaulting to `sizeof(struct ffa_mem_region)`. It also introduces bounds checking against `max_fragsize`. 2. Enhancing the pKVM hypervisor validation logic to no longer strictly enforce that the descriptor strictly follows the header, aligning it with the driver behavior and the FF-A specification, while also ensuring the offset falls within the mailbox buffer bounds. While addressing these bugs, Sashiko uncovered other issues that were fixed in the same series. All the patches aside from the first one in optee are urgent fixes as they either impact the hypervisor security or kernel stability. Changelog ######### v5->v6: - Add fixes tag - Small clean up make variable declaration reverse christmas tree. v4->v5: - Collect Sudeep Rbs - Add extra patch to check base address alignment. - Remove WARN_ONs in KVM code - Use ffa_emad_size_get() instead of hardcoded size in KVM code. v3 -> v4: - Address review comments and fix Sashiko bugs v2 -> v3: - Fixed typo in nvhe/ffa.c (missing sizeof) v1 -> v2: - For pKVM, removed the strict placement enforcement for `ep_mem_offset` as it is not compliant with the spec, and avoids making assumptions about the driver's memory layout. Link to: ######## v5: https://lore.kernel.org/all/20260526151934.3783707-1-smostafa@google.com/ v4: https://lore.kernel.org/all/20260520204948.2440882-1-smostafa@google.com/ v3: https://lore.kernel.org/all/20260512124442.1899107-1-sebastianene@google.co… v2: https://lore.kernel.org/all/20260430160241.1934777-1-sebastianene@google.co… v1: https://lore.kernel.org/all/ae9KN9nkOgDYJcGP@google.com/T/#t Mostafa Saleh (4): optee: ffa: Add NULL check in optee_ffa_lend_protmem firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() KVM: arm64: Fix bounds checking in do_ffa_mem_reclaim() KVM: arm64: Ensure FFA ranges are page aligned Sebastian Ene (2): firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation KVM: arm64: Validate the offset to the mem access descriptor arch/arm64/kvm/hyp/nvhe/ffa.c | 38 ++++++++++++++++++++++--------- drivers/firmware/arm_ffa/driver.c | 21 ++++++++++------- drivers/tee/optee/ffa_abi.c | 3 +++ include/linux/arm_ffa.h | 2 +- 4 files changed, 44 insertions(+), 20 deletions(-) -- 2.54.0.746.g67dd491aae-goog

2 hours, 53 minutes

2
7
0 0

[PATCH v7 00/15] firmware: qcom: Add OP-TEE PAS service support

by Sumit Garg

From: Sumit Garg <sumit.garg(a)oss.qualcomm.com> Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to Qualcomm TEE (QTEE) can't support these non-standard SCM calls. And even for newer architectures using S-EL2 with Hafnium support, QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Currently OP-TEE support is being added to provide the backend PAS service implementation which can be found as part of this PR [1]. This implementation has been tested on Kodiak/RB3Gen2 board with lemans EVK board being the next target. In addition to that WIN/IPQ targets planning to use OP-TEE will use this service too. Surely the backwards compatibility is maintained and tested for SCM backend. Note that kernel PAS service support while running in EL2 is at parity among OP-TEE vs QTEE. Especially the media (venus/iris) support depends on proper IOMMU support being worked out on the PAS client end. Patch summary: - Patch #1: adds Kodiak EL2 overlay since boot stack with TF-A/OP-TEE only allow UEFI and Linux to boot in EL2. - Patch #2: adds generic PAS service. - Patch #3: migrates SCM backend to generic PAS service. - Patch #4: adds TEE/OP-TEE backend for generic PAS service. - Patch #5-#13: migrates all client drivers to generic PAS service. - Patch #14: drops legacy PAS SCM exported APIs. The patch-set is based on qcom tree tip [2] and can be found in git tree here [3]. Merge strategy: It is expected due to APIs dependency, the entire patch-set to go via the Qcom tree. All other subsystem maintainers, it will be great if I can get acks for the corresponding subsystem patches. [1] https://github.com/OP-TEE/optee_os/pull/7721 (already merged) [2] https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git/log/?h=for-n… [3] https://git.kernel.org/pub/scm/linux/kernel/git/sumit.garg/linux.git/log/?h… --- Changes in v7: - Rebased to qcom tree (for-next branch) tip. - Merged patch #5 and #7 due to build dependency. - Disabled modem for kodiak EL2 as it isn't tested yet. - Fix an issue found out by sashiko-bot for patch #4. Changes in v6: - Rebased to v7.1-rc4 tag. - Patch #14: fixed ret error print. - Add Kconfig descriptions for PAS symbols such that they are visible in menuconfig to update. Changes in v5: - Incorporated misc. comments from Mukesh. - Split up patch #11 into 2 to add an independent commit for passing proper PAS ID to set_remote_state API. - Picked up tags. Changes in v4: - Incorporate misc. comments on patch #4. - Picked up an ack for patch #10. - Clarify in cover letter about state of media support. Changes in v3: - Incorporated some style and misc. comments for patch #2, #3 and #4. - Add QCOM_PAS Kconfig dependency for various subsystems. - Switch from pseudo TA to proper TA invoke commands. Changes in v2: - Fixed kernel doc warnings. - Polish commit message and comments for patch #2. - Pass proper PAS ID in set_remote_state API for media firmware drivers. - Added Maintainer entry and dropped MODULE_AUTHOR. Mukesh Ojha (1): arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg (14): firmware: qcom: Add a generic PAS service firmware: qcom_scm: Migrate to generic PAS service firmware: qcom: Add a PAS TEE service remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs remoteproc: qcom_q6v5_mss: Switch to generic PAS TZ APIs remoteproc: qcom_wcnss: Switch to generic PAS TZ APIs remoteproc: qcom: Select QCOM_PAS generic service drm/msm: Switch to generic PAS TZ APIs media: qcom: Switch to generic PAS TZ APIs media: qcom: Pass proper PAS ID to set_remote_state API net: ipa: Switch to generic PAS TZ APIs wifi: ath12k: Switch to generic PAS TZ APIs firmware: qcom_scm: Remove SCM PAS wrappers MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service MAINTAINERS | 9 + arch/arm64/boot/dts/qcom/Makefile | 2 + arch/arm64/boot/dts/qcom/kodiak-el2.dtso | 39 ++ drivers/firmware/qcom/Kconfig | 21 +- drivers/firmware/qcom/Makefile | 2 + drivers/firmware/qcom/qcom_pas.c | 291 +++++++++++ drivers/firmware/qcom/qcom_pas.h | 50 ++ drivers/firmware/qcom/qcom_pas_tee.c | 477 ++++++++++++++++++ drivers/firmware/qcom/qcom_scm.c | 302 ++++------- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +- drivers/media/platform/qcom/iris/Kconfig | 25 +- .../media/platform/qcom/iris/iris_firmware.c | 9 +- drivers/media/platform/qcom/venus/Kconfig | 1 + drivers/media/platform/qcom/venus/firmware.c | 11 +- drivers/net/ipa/Kconfig | 2 +- drivers/net/ipa/ipa_main.c | 13 +- drivers/net/wireless/ath/ath12k/Kconfig | 2 +- drivers/net/wireless/ath/ath12k/ahb.c | 10 +- drivers/remoteproc/Kconfig | 4 +- drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 51 +- drivers/remoteproc/qcom_wcnss.c | 12 +- drivers/soc/qcom/mdt_loader.c | 12 +- include/linux/firmware/qcom/qcom_pas.h | 43 ++ include/linux/firmware/qcom/qcom_scm.h | 29 -- include/linux/soc/qcom/mdt_loader.h | 6 +- 28 files changed, 1124 insertions(+), 320 deletions(-) create mode 100644 arch/arm64/boot/dts/qcom/kodiak-el2.dtso create mode 100644 drivers/firmware/qcom/qcom_pas.c create mode 100644 drivers/firmware/qcom/qcom_pas.h create mode 100644 drivers/firmware/qcom/qcom_pas_tee.c create mode 100644 include/linux/firmware/qcom/qcom_pas.h -- 2.51.0

1 day, 5 hours

2
17
0 0

[PATCH v5 0/6] arm_ffa, KVM: Fix FF-A emad offset calculations

by Mostafa Saleh

Hi all, This series fixes the Endpoint Memory Access Descriptor (EMAD) offset calculations and adds the necessary bounds checks for both the core FF-A driver and the pKVM hypervisor. Prior to FF-A version 1.1, the memory region header didn't specify an explicit offset for the EMADs, leading to the assumption that they immediately follow the header. However, from v1.1 onwards, the specification dictates using the ep_mem_offset` field to determine the start of the memory access array. The patches in this series address this by: 1. Updating the core `arm_ffa` firmware driver to correctly calculate the descriptor offset using `ep_mem_offset` rather than defaulting to `sizeof(struct ffa_mem_region)`. It also introduces bounds checking against `max_fragsize`. 2. Enhancing the pKVM hypervisor validation logic to no longer strictly enforce that the descriptor strictly follows the header, aligning it with the driver behavior and the FF-A specification, while also ensuring the offset falls within the mailbox buffer bounds. While addressing these bugs, Sashiko uncovered other issues that were fixed in the same series. Changelog ######### v4->v5: - Collect Sudeep Rbs - Add extra patch to check base address alignment. - Remove WARN_ONs in KVM code - Use ffa_emad_size_get() instead of hardcoded size in KVM code. v3 -> v4: - Address review comments and fix Sashiko bugs v2 -> v3: - Fixed typo in nvhe/ffa.c (missing sizeof) v1 -> v2: - For pKVM, removed the strict placement enforcement for `ep_mem_offset` as it is not compliant with the spec, and avoids making assumptions about the driver's memory layout. Link to: ######## v4: https://lore.kernel.org/all/20260520204948.2440882-1-smostafa@google.com/ v3: https://lore.kernel.org/all/20260512124442.1899107-1-sebastianene@google.co… v2: https://lore.kernel.org/all/20260430160241.1934777-1-sebastianene@google.co… v1: https://lore.kernel.org/all/ae9KN9nkOgDYJcGP@google.com/T/#t Mostafa Saleh (4): optee: ffa: Add NULL check in optee_ffa_lend_protmem firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() KVM: arm64: Fix bounds checking in do_ffa_mem_reclaim() KVM: arm64: Ensure FFA ranges are page aligned Sebastian Ene (2): firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation KVM: arm64: Validate the offset to the mem access descriptor arch/arm64/kvm/hyp/nvhe/ffa.c | 38 ++++++++++++++++++++++--------- drivers/firmware/arm_ffa/driver.c | 21 ++++++++++------- drivers/tee/optee/ffa_abi.c | 3 +++ include/linux/arm_ffa.h | 2 +- 4 files changed, 44 insertions(+), 20 deletions(-) -- 2.54.0.746.g67dd491aae-goog

1 day, 6 hours

1
6
0 0

OP-TEE Contributions Forum, monthly meeting May 26

by Jens Wiklander

Hi, Tomorrow, Tuesday, it's time for another OP-TEE contributors' monthly meeting. For time and connection details, see the calendar at https://www.trustedfirmware.org/meetings/ Regarding Kconfig support:https://github.com/OP-TEE/optee_os/pull/7714 It appears that the transition will take quite some time. We'll have a window when some variables have transitioned to be managed by Kconfig, but others remain managed by the makefiles. Do we care that variables passed on the command line may work differently, depending on whether they are managed by makefiles or Kconfig? Can something be done about it? Any other topics? Cheers, Jens

2 days, 8 hours

1
0
0 0

[PATCH v6 00/16] firmware: qcom: Add OP-TEE PAS service support

by Sumit Garg

From: Sumit Garg <sumit.garg(a)oss.qualcomm.com> Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to Qualcomm TEE (QTEE) can't support these non-standard SCM calls. And even for newer architectures using S-EL2 with Hafnium support, QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Currently OP-TEE support is being added to provide the backend PAS service implementation which can be found as part of this PR [1]. This implementation has been tested on Kodiak/RB3Gen2 board with lemans EVK board being the next target. In addition to that WIN/IPQ targets planning to use OP-TEE will use this service too. Surely the backwards compatibility is maintained and tested for SCM backend. Note that kernel PAS service support while running in EL2 is at parity among OP-TEE vs QTEE. Especially the media (venus/iris) support depends on proper IOMMU support being worked out on the PAS client end. Patch summary: - Patch #1: adds Kodiak EL2 overlay since boot stack with TF-A/OP-TEE only allow UEFI and Linux to boot in EL2. - Patch #2: adds generic PAS service. - Patch #3: migrates SCM backend to generic PAS service. - Patch #4: adds TEE/OP-TEE backend for generic PAS service. - Patch #5-#14: migrates all client drivers to generic PAS service. - Patch #15: drops legacy PAS SCM exported APIs. The patch-set is based on v7.1-rc4 tag and can be found in git tree here [2]. Merge strategy: It is expected due to APIs dependency, the entire patch-set to go via the Qcom tree. All other subsystem maintainers, it will be great if I can get acks for the corresponding subsystem patches. [1] https://github.com/OP-TEE/optee_os/pull/7721 (already merged) [2] https://git.kernel.org/pub/scm/linux/kernel/git/sumit.garg/linux.git/log/?h… --- Changes in v6: - Rebased to v7.1-rc4 tag. - Patch #14: fixed ret error print. - Add Kconfig descriptions for PAS symbols such that they are visible in menuconfig to update. Changes in v5: - Incorporated misc. comments from Mukesh. - Split up patch #11 into 2 to add an independent commit for passing proper PAS ID to set_remote_state API. - Picked up tags. Changes in v4: - Incorporate misc. comments on patch #4. - Picked up an ack for patch #10. - Clarify in cover letter about state of media support. Changes in v3: - Incorporated some style and misc. comments for patch #2, #3 and #4. - Add QCOM_PAS Kconfig dependency for various subsystems. - Switch from pseudo TA to proper TA invoke commands. Changes in v2: - Fixed kernel doc warnings. - Polish commit message and comments for patch #2. - Pass proper PAS ID in set_remote_state API for media firmware drivers. - Added Maintainer entry and dropped MODULE_AUTHOR. Mukesh Ojha (1): arm64: dts: qcom: kodiak: Add EL2 overlay Sumit Garg (15): firmware: qcom: Add a generic PAS service firmware: qcom_scm: Migrate to generic PAS service firmware: qcom: Add a PAS TEE service remoteproc: qcom_q6v5_pas: Switch over to generic PAS TZ APIs remoteproc: qcom_q6v5_mss: Switch to generic PAS TZ APIs soc: qcom: mdtloader: Switch to generic PAS TZ APIs remoteproc: qcom_wcnss: Switch to generic PAS TZ APIs remoteproc: qcom: Select QCOM_PAS generic service drm/msm: Switch to generic PAS TZ APIs media: qcom: Switch to generic PAS TZ APIs media: qcom: Pass proper PAS ID to set_remote_state API net: ipa: Switch to generic PAS TZ APIs wifi: ath12k: Switch to generic PAS TZ APIs firmware: qcom_scm: Remove SCM PAS wrappers MAINTAINERS: Add maintainer entry for Qualcomm PAS TZ service MAINTAINERS | 9 + arch/arm64/boot/dts/qcom/Makefile | 2 + arch/arm64/boot/dts/qcom/kodiak-el2.dtso | 35 ++ drivers/firmware/qcom/Kconfig | 21 +- drivers/firmware/qcom/Makefile | 2 + drivers/firmware/qcom/qcom_pas.c | 291 +++++++++++ drivers/firmware/qcom/qcom_pas.h | 50 ++ drivers/firmware/qcom/qcom_pas_tee.c | 476 ++++++++++++++++++ drivers/firmware/qcom/qcom_scm.c | 302 ++++------- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 11 +- drivers/media/platform/qcom/iris/Kconfig | 25 +- .../media/platform/qcom/iris/iris_firmware.c | 9 +- drivers/media/platform/qcom/venus/Kconfig | 1 + drivers/media/platform/qcom/venus/firmware.c | 11 +- drivers/net/ipa/Kconfig | 2 +- drivers/net/ipa/ipa_main.c | 13 +- drivers/net/wireless/ath/ath12k/Kconfig | 2 +- drivers/net/wireless/ath/ath12k/ahb.c | 10 +- drivers/remoteproc/Kconfig | 4 +- drivers/remoteproc/qcom_q6v5_mss.c | 5 +- drivers/remoteproc/qcom_q6v5_pas.c | 51 +- drivers/remoteproc/qcom_wcnss.c | 12 +- drivers/soc/qcom/mdt_loader.c | 12 +- include/linux/firmware/qcom/qcom_pas.h | 43 ++ include/linux/firmware/qcom/qcom_scm.h | 29 -- include/linux/soc/qcom/mdt_loader.h | 6 +- 28 files changed, 1119 insertions(+), 320 deletions(-) create mode 100644 arch/arm64/boot/dts/qcom/kodiak-el2.dtso create mode 100644 drivers/firmware/qcom/qcom_pas.c create mode 100644 drivers/firmware/qcom/qcom_pas.h create mode 100644 drivers/firmware/qcom/qcom_pas_tee.c create mode 100644 include/linux/firmware/qcom/qcom_pas.h -- 2.51.0

5 days, 14 hours

4
22
0 0

dma_heap and protected memory

by Amirreza Zarrabi

Hi Jens, Recently protected heap support has been added for the TEE subsystem. This allows dma-heaps to be managed by the TEE subsystem itself. For standard, non-protected heaps such as the system heap or CMA heap, I am trying to understand the expected usage model. One possible workaround appears to be to mmap the dma-buf fd in userspace, then register the resulting userspace VA with the TEE subsystem to obtain a TEE shared-memory object, for example: fd = dma_heap_alloc(...); va = mmap(fd, ...); shm_fd = tee_shm_register(va, size); tee_invoke(shm_fd); close(shm_fd); munmap(va, size); close(fd); This seems reasonable when the lifetime of the registered shared memory is limited to a single invocation or callback. However, I am concerned about cases (multiple exits in qcomtee) where the TEE side needs to retain access to the memory after the ioctl/invocation returns. In that case, registering only the userspace VA does not appear to keep the underlying dma-buf object alive. The TEE core pins the pages, but it does not hold a dma-buf reference or attachment. If userspace later closes the dma-buf fd and unmaps the VA, the dma-buf exporter may consider the buffer released, while the TEE side may still have the memory registered. Is there a recommended way to use standard heaps, such as the system or CMA dma-buf heaps, when the sharing lifetime is longer than a single TEE call? Would it make sense to extend tee_shm_register_fd() so that it can handle dma-buf fds from regular dma-heaps as well, not only dma-bufs managed by the TEE subsystem? That would allow the TEE core or backend driver to keep the dma-buf reference for the lifetime of the TEE shared-memory object. Best regards, Amir

6 days, 7 hours

3
4
0 0

[GIT PULL] QCOMTEE fix for v7.1

by Jens Wiklander

Hello soc maintainers, Please pull this small fix for the QCOMTEE driver. Thanks, Jens The following changes since commit 028ef9c96e96197026887c0f092424679298aae8: Linux 7.0 (2026-04-12 13:48:06 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/qcomtee-fix-for-v7.1 for you to fetch changes up to 471c18323dfdfe7844e193b896a9267ae23a1026: tee: qcomtee: add missing va_end in early return qcomtee_object_user_init() (2026-05-20 09:22:52 +0200) ---------------------------------------------------------------- QCOMTEE fix for v7.1 Adding a missing va_end in early return qcomtee_object_user_init() ---------------------------------------------------------------- Robertus Diawan Chris (1): tee: qcomtee: add missing va_end in early return qcomtee_object_user_init() drivers/tee/qcomtee/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

6 days, 7 hours

1
0
0 0

[GIT PULL] OP-TEE fix for v7.1

by Jens Wiklander

Hello soc maintainers, Please pull this patch fixing a use-after-free race in the OP-TEE driver where a client exiting prematurely could free a request still being processed by the supplicant. This is basically a resend of https://lore.kernel.org/op-tee/20260316071210.GA2470832@rayden/ Thanks, Jens The following changes since commit 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f: Linux 7.0-rc1 (2026-02-22 13:18:59 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/optee-fix-for-v7.1 for you to fetch changes up to 387a926ee166814611acecb960207fe2f3c4fd3e: tee: optee: prevent use-after-free when the client exits before the supplicant (2026-03-02 14:36:50 +0100) ---------------------------------------------------------------- OP-TEE fix for v7.1 Prevent possible use after free in supplicant communication. ---------------------------------------------------------------- Amirreza Zarrabi (1): tee: optee: prevent use-after-free when the client exits before the supplicant drivers/tee/optee/supp.c | 107 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 74 insertions(+), 33 deletions(-)

6 days, 7 hours

1
0
0 0

[GIT PULL] TEE fixes for v7.1

by Jens Wiklander

Hello soc maintainers, Please pull these small fixes for the TEE subsystem. Thanks, Jens The following changes since commit 028ef9c96e96197026887c0f092424679298aae8: Linux 7.0 (2026-04-12 13:48:06 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee.git tags/tee-fixes-for-v7.1 for you to fetch changes up to 6fa9b543f6b4ed15ff72af266b29f316643de289: tee: fix params_from_user() error path in tee_ioctl_supp_recv (2026-05-20 08:49:09 +0200) ---------------------------------------------------------------- TEE fixes for v7.1 Fixing: - params_from_user() cleanup in error path in tee_ioctl_supp_recv() - possible tee_shm leak in error path in register_shm_helper() - padding in struct tee_ioctl_object_invoke_arg ---------------------------------------------------------------- Arnd Bergmann (1): tee: fix tee_ioctl_object_invoke_arg padding Georgiy Osokin (1): tee: shm: fix shm leak in register_shm_helper() Qihang (1): tee: fix params_from_user() error path in tee_ioctl_supp_recv drivers/tee/tee_core.c | 56 +++++++++++++++++++++--------------------------- drivers/tee/tee_shm.c | 2 +- include/uapi/linux/tee.h | 1 + 3 files changed, 27 insertions(+), 32 deletions(-)

6 days, 7 hours

1
0
0 0

[PATCH v4 0/5] arm_ffa, KVM: Fix FF-A emad offset calculations

by Mostafa Saleh

Hi all, This series fixes the Endpoint Memory Access Descriptor (EMAD) offset calculations and adds the necessary bounds checks for both the core FF-A driver and the pKVM hypervisor. Prior to FF-A version 1.1, the memory region header didn't specify an explicit offset for the EMADs, leading to the assumption that they immediately follow the header. However, from v1.1 onwards, the specification dictates using the ep_mem_offset` field to determine the start of the memory access array. The patches in this series address this by: 1. Updating the core `arm_ffa` firmware driver to correctly calculate the descriptor offset using `ep_mem_offset` rather than defaulting to `sizeof(struct ffa_mem_region)`. It also introduces bounds checking against `max_fragsize`. 2. Enhancing the pKVM hypervisor validation logic to no longer strictly enforce that the descriptor strictly follows the header, aligning it with the driver behavior and the FF-A specification, while also ensuring the offset falls within the mailbox buffer bounds. While addressing these bugs, Sashiko uncovered other issues that were fixed in the same series. Changelog ######### v3 -> v4: - Address review comments and fix Sashiko bugs v2 -> v3: - Fixed typo in nvhe/ffa.c (missing sizeof) v1 -> v2: - For pKVM, removed the strict placement enforcement for `ep_mem_offset` as it is not compliant with the spec, and avoids making assumptions about the driver's memory layout. Link to: ######## v3: https://lore.kernel.org/all/20260512124442.1899107-1-sebastianene@google.co… v2: https://lore.kernel.org/all/20260430160241.1934777-1-sebastianene@google.co… v1: https://lore.kernel.org/all/ae9KN9nkOgDYJcGP@google.com/T/#t Mostafa Saleh (3): optee: ffa: Add NULL check in optee_ffa_lend_protmem firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() KVM: arm64: Fix bounds checking in do_ffa_mem_reclaim() Sebastian Ene (2): firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation KVM: arm64: Validate the offset to the mem access descriptor arch/arm64/kvm/hyp/nvhe/ffa.c | 30 +++++++++++++++++++++++------- drivers/firmware/arm_ffa/driver.c | 21 +++++++++++++-------- drivers/tee/optee/ffa_abi.c | 3 +++ include/linux/arm_ffa.h | 2 +- 4 files changed, 40 insertions(+), 16 deletions(-) -- 2.54.0.669.g59709faab0-goog

6 days, 8 hours

3
11
0 0

2026

2025

2024

2023

2022

2021

2020

OP-TEE