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| author | ikaros <void0red@gmail.com> | 2026-05-27 21:04:06 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-05-27 21:18:46 +0300 |
| commit | 96b2b616870e46e2bc04efec03879683a0036e66 (patch) | |
| tree | 09fd089dbf1e1ca6d8d69630c4546386be8f9022 | |
| parent | c5296da2d516707862f8a2dbb4b515f777e5294f (diff) | |
| download | linux-96b2b616870e46e2bc04efec03879683a0036e66.tar.xz | |
ACPICA: Add validation for node in acpi_ns_build_normalized_path()
Add validation for node in acpi_ns_build_normalized_path()
to prevent use-after-free vulnerabilities.
Link: https://github.com/acpica/acpica/commit/b35adf49e89a
Signed-off-by: ikaros <void0red@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/118666237.nniJfEyVGO@rafael.j.wysocki
| -rw-r--r-- | drivers/acpi/acpica/nsnames.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c index 22aeeeb56cff..19802da865c5 100644 --- a/drivers/acpi/acpica/nsnames.c +++ b/drivers/acpi/acpica/nsnames.c @@ -222,6 +222,12 @@ acpi_ns_build_normalized_path(struct acpi_namespace_node *node, goto build_trailing_null; } + /* Validate the Node to avoid use-after-free vulnerabilities */ + + if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) { + goto build_trailing_null; + } + next_node = node; while (next_node && next_node != acpi_gbl_root_node) { if (next_node != node) { |