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Miaoqian Lin d381de7fd4 xtensa: simdisk: add input size check in proc_write_simdisk ... commit 5d5f08fd0c upstream. A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()") Fixes: b6c7e873da ("xtensa: ISS: add host file-based simulated disk") Fixes: 16e5c1fc36 ("convert a bunch of open-coded instances of memdup_user_nul()") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Message-Id: <20250829083015.1992751-1-linmq006@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2025-10-19 16:33:53 +02:00
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boot	kbuild: use $(src) instead of $(srctree)/$(src) for source directory	2024-05-10 04:34:52 +09:00
configs	treewide: drop CONFIG_EMBEDDED	2023-08-21 13:46:25 -07:00
include	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
kernel	of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify	2024-12-05 14:01:32 +01:00
lib	xtensa: Use PCI_HEADER_TYPE_MFD instead of literal	2023-11-29 02:07:52 -08:00
mm	mm: implement update_mmu_tlb() using update_mmu_tlb_range()	2024-07-03 19:29:57 -07:00
platforms	xtensa: simdisk: add input size check in proc_write_simdisk	2025-10-19 16:33:53 +02:00
variants	xtensa: add test_kc705_be variant	2018-08-20 12:34:45 -07:00
Kbuild	xtensa: move core-y in arch/xtensa/Makefile to arch/xtensa/Kbuild	2021-08-11 11:37:13 -07:00
Kconfig	xtensa: Emulate one-byte cmpxchg	2024-09-13 07:10:38 -07:00
Kconfig.debug	xtensa: dump userspace code around the exception PC	2023-06-24 06:34:27 -07:00
Makefile	xtensa: don't produce FDPIC output with fdpic toolchain	2024-01-11 18:58:47 -08:00