From 78004e9a87f240df03e2f73120d291763c32e0a7 Mon Sep 17 00:00:00 2001 From: Ali Ahmet Memis Date: Fri, 21 Aug 2026 01:45:27 +0000 Subject: openrisc: fix arbitrary kernel memory access via or1k_atomic syscall sys_or1k_atomic() (syscall 244 in the "or1k" ABI) takes two user pointers, v1 and v2, and swaps the words they point to in hand-written assembly. l.lwz r29,0(r4) l.lwz r27,0(r5) l.sw 0(r4),r27 l.sw 0(r5),r29 The pointers are not checked with access_ok(). The four memory accesses also have no exception table entries. A caller passes a kernel address as either pointer, and the syscall reads from and writes to it directly. This gives an unprivileged process a kernel read/write primitive. It overwrites kernel data such as the sys_call_table, gaining code execution in kernel context. Check both pointers before entering the critical section. Add fixups for the four memory accesses so faults on valid but unmapped user addresses return -EFAULT. [shorne@gmail.com: fix comment style] Fixes: 9d02a4283e9c ("OpenRISC: Boot code") Cc: stable@vger.kernel.org Signed-off-by: Ali Ahmet Memis Signed-off-by: Stafford Horne --- drivers/crypto/Makefile | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 drivers/crypto/Makefile (limited to 'drivers/crypto/Makefile') diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile new file mode 100644 index 000000000..5a950c7ab --- /dev/null +++ b/drivers/crypto/Makefile @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_CRYPTO_DEV_ALLWINNER) += allwinner/ +obj-$(CONFIG_CRYPTO_DEV_ASPEED) += aspeed/ +obj-$(CONFIG_CRYPTO_DEV_ATMEL_AES) += atmel-aes.o +obj-$(CONFIG_CRYPTO_DEV_ATMEL_SHA) += atmel-sha.o +obj-$(CONFIG_CRYPTO_DEV_ATMEL_TDES) += atmel-tdes.o +# __init ordering requires atmel-i2c being before atmel-ecc and atmel-sha204a. +obj-$(CONFIG_CRYPTO_DEV_ATMEL_I2C) += atmel-i2c.o +obj-$(CONFIG_CRYPTO_DEV_ATMEL_ECC) += atmel-ecc.o +obj-$(CONFIG_CRYPTO_DEV_ATMEL_SHA204A) += atmel-sha204a.o +obj-$(CONFIG_CRYPTO_DEV_CCP) += ccp/ +obj-$(CONFIG_CRYPTO_DEV_CCREE) += ccree/ +obj-$(CONFIG_CRYPTO_DEV_CHELSIO) += chelsio/ +obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_COMMON) += caam/ +obj-$(CONFIG_CRYPTO_DEV_GEODE) += geode-aes.o +obj-$(CONFIG_CRYPTO_DEV_HIFN_795X) += hifn_795x.o +obj-$(CONFIG_CRYPTO_DEV_IMGTEC_HASH) += img-hash.o +obj-$(CONFIG_CRYPTO_DEV_MARVELL) += marvell/ +obj-$(CONFIG_CRYPTO_DEV_MXS_DCP) += mxs-dcp.o +obj-$(CONFIG_CRYPTO_DEV_NX) += nx/ +obj-$(CONFIG_CRYPTO_DEV_OMAP) += omap-crypto.o +obj-$(CONFIG_CRYPTO_DEV_OMAP_AES) += omap-aes-driver.o +omap-aes-driver-objs := omap-aes.o omap-aes-gcm.o +obj-$(CONFIG_CRYPTO_DEV_OMAP_DES) += omap-des.o +obj-$(CONFIG_CRYPTO_DEV_OMAP_SHAM) += omap-sham.o +obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o +obj-$(CONFIG_CRYPTO_DEV_PADLOCK_SHA) += padlock-sha.o +obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/ +obj-$(CONFIG_CRYPTO_DEV_QCE) += qce/ +obj-$(CONFIG_CRYPTO_DEV_QCOM_RNG) += qcom-rng.o +obj-$(CONFIG_CRYPTO_DEV_ROCKCHIP) += rockchip/ +obj-$(CONFIG_CRYPTO_DEV_S5P) += s5p-sss.o +obj-$(CONFIG_CRYPTO_DEV_SA2UL) += sa2ul.o +obj-$(CONFIG_CRYPTO_DEV_SAHARA) += sahara.o +obj-$(CONFIG_CRYPTO_DEV_SL3516) += gemini/ +obj-y += stm32/ +obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o +obj-$(CONFIG_CRYPTO_DEV_TEGRA) += tegra/ +obj-$(CONFIG_CRYPTO_DEV_VIRTIO) += virtio/ +obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/ +obj-y += inside-secure/ +obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/ +obj-y += xilinx/ +obj-y += hisilicon/ +obj-$(CONFIG_CRYPTO_DEV_AMLOGIC_GXL) += amlogic/ +obj-y += intel/ +obj-y += starfive/ +obj-y += cavium/ +obj-y += ti/ -- cgit v1.3.1