Michael Zhivich d37fe3982c x86/bugs: Fix use of possibly uninit value in amd_check_tsa_microcode() ...

For kernels compiled with CONFIG_INIT_STACK_NONE=y, the value of __reserved
field in zen_patch_rev union on the stack may be garbage.  If so, it will
prevent correct microcode check when consulting p.ucode_rev, resulting in
incorrect mitigation selection.

This is a stable-only fix.

Cc: <stable@vger.kernel.org>
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Fixes: d12145e845 ("x86/bugs: Add a Transient Scheduler Attacks mitigation")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-08-15 12:04:50 +02:00

..

boot

x86/build: Fix broken copy command in genimage.sh when making isoimage

2025-06-04 14:40:11 +02:00

coco

x86/tdx: Fix "in-kernel MMIO" check

2024-10-17 15:21:29 +02:00

configs

…

crypto

crypto: x86/aegis128 - access 32-bit arguments as 32-bit

2024-12-14 19:53:58 +01:00

entry

x86/bugs: Rename MDS machinery to something more generic

2025-07-10 15:59:53 +02:00

events

perf/amd/ibs: Fix perf_ibs_op.cnt_mask for CurCnt

2025-06-04 14:40:17 +02:00

hyperv

x86/hyperv: Fix usage of cpu_online_mask to get valid cpu

2025-08-15 12:04:46 +02:00

ia32

…

include

x86: Fix X86_FEATURE_VERW_CLEAR definition

2025-07-17 18:32:15 +02:00

kernel

x86/bugs: Fix use of possibly uninit value in amd_check_tsa_microcode()

2025-08-15 12:04:50 +02:00

kvm

KVM: SVM: Reject SEV{-ES} intra host migration if vCPU creation is in-flight

2025-07-17 18:32:07 +02:00

lib

x86/its: Add support for ITS-safe return thunk

2025-05-18 08:21:26 +02:00

math-emu

…

mm

x86/mm/init: Handle the special case of device private pages in add_pages(), to not increase max_pfn and trigger dma_addressing_limited() bounce buffers bounce buffers

2025-06-04 14:40:22 +02:00

net

x86/its: FineIBT-paranoid vs ITS

2025-05-18 08:21:26 +02:00

pci

PCI: Detect and trust built-in Thunderbolt chips

2024-12-14 19:54:47 +01:00

platform

x86/pvh: Call C code via the kernel virtual mapping

2025-04-25 10:44:01 +02:00

power

…

purgatory

x86/purgatory: Switch to the position-independent small code model

2024-06-12 11:03:12 +02:00

ras

…

realmode

…

tools

x86/tools: Drop duplicate unlikely() definition in insn_decoder_test.c

2025-07-06 10:58:04 +02:00

um

um: Add cmpxchg8b_emu and checksum functions to asm-prototypes.h

2025-07-06 10:57:55 +02:00

video

…

virt/vmx/tdx

…

xen

Grab mm lock before grabbing pt lock

2025-02-21 13:49:59 +01:00

.gitignore

…

Kbuild

…

Kconfig

x86/mm: Disable hugetlb page table sharing on 32-bit

2025-07-17 18:32:15 +02:00

Kconfig.assembler

…

Kconfig.cpu

x86/Kconfig: Transmeta Crusoe is CPU family 5, not 6

2024-02-23 09:12:43 +01:00

Kconfig.debug

x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y

2024-06-12 11:03:50 +02:00

Makefile

x86/boot: Compile boot code with -std=gnu11 too

2025-07-17 18:32:06 +02:00

Makefile_32.cpu

…

Makefile.um

…