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ACPICA: utilities: Fix overflow check in vsnprintf()

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[ Upstream commit 12b660251007e00a3e4d47ec62dbe3a7ace7023e ]

ACPICA commit d9d59b7918514ae55063b93f3ec041b1a569bf49

The old version breaks sprintf on 64-bit systems for buffers
outside [0..UINT32_MAX].

Link: https://github.com/acpica/acpica/commit/d9d59b79
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/4994935.GXAFRqVoOG@rjwysocki.net
Signed-off-by: gldrk <me@rarity.fan>
[ rjw: Added the tag from gldrk ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
gldrk
2025-04-25 21:21:52 +02:00
committed by Greg Kroah-Hartman
parent 558ba4afdf
commit cf961a38e4
1 changed files with 2 additions and 5 deletions
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7
drivers/acpi/acpica/utprint.c
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@@ -333,11 +333,8 @@ int vsnprintf(char *string, acpi_size size, const char *format, va_list args)
pos = string;
if (size != ACPI_UINT32_MAX) {
end = string + size;
} else {
end = ACPI_CAST_PTR(char, ACPI_UINT32_MAX);
}
size = ACPI_MIN(size, ACPI_PTR_DIFF(ACPI_MAX_PTR, string));
end = string + size;
for (; *format; ++format) {
if (*format != '%') {