diff --git a/stdlib/@tests/stubtest_allowlists/linux.txt b/stdlib/@tests/stubtest_allowlists/linux.txt
index e2b09917706f..d5ad8ea1d40c 100644
--- a/stdlib/@tests/stubtest_allowlists/linux.txt
+++ b/stdlib/@tests/stubtest_allowlists/linux.txt
@@ -137,6 +137,11 @@ _?socket.SOL_ROSE
 # not present on GitHub Actions runners.
 termios.TIOCTTYGSTRUCT
 
+# Python built against glibc 2.42 or newer omits termios.NCC because
+# <sys/ioctl.h> no longer defines NCC. Builds using older glibc headers,
+# such as those on Ubuntu 24.04, still expose it.
+(termios\.NCC)?
+
 # Only defined when Python was built against glibc 2.42 or newer
 (termios.B7200)?
 (termios.B14400)?
diff --git a/stdlib/_socket.pyi b/stdlib/_socket.pyi
index 759fd8265387..40f76715e394 100644
--- a/stdlib/_socket.pyi
+++ b/stdlib/_socket.pyi
@@ -98,6 +98,8 @@ if sys.platform != "win32" and sys.platform != "darwin" and sys.platform != "lin
     SO_SETFIB: Final[int]
 if sys.platform == "linux" and sys.version_info >= (3, 13):
     SO_BINDTOIFINDEX: Final[int]
+if sys.platform == "linux" and sys.version_info >= (3, 15):
+    SO_PASSRIGHTS: Final[int]
 
 SOMAXCONN: Final[int]
 
diff --git a/stdlib/os/__init__.pyi b/stdlib/os/__init__.pyi
index 89b9bd866420..008a8d607211 100644
--- a/stdlib/os/__init__.pyi
+++ b/stdlib/os/__init__.pyi
@@ -234,12 +234,15 @@ if sys.platform == "linux" and sys.version_info >= (3, 15):
         "AT_STATX_DONT_SYNC",
         "AT_STATX_FORCE_SYNC",
         "AT_STATX_SYNC_AS_STAT",
+        "RWF_ATOMIC",
+        "RWF_DONTCACHE",
         "STATX_ATIME",
         "STATX_BASIC_STATS",
         "STATX_BLOCKS",
         "STATX_BTIME",
         "STATX_CTIME",
         "STATX_DIOALIGN",
+        "STATX_DIO_READ_ALIGN",
         "STATX_GID",
         "STATX_INO",
         "STATX_MNT_ID",
@@ -248,8 +251,10 @@ if sys.platform == "linux" and sys.version_info >= (3, 15):
         "STATX_MTIME",
         "STATX_NLINK",
         "STATX_SIZE",
+        "STATX_SUBVOL",
         "STATX_TYPE",
         "STATX_UID",
+        "STATX_WRITE_ATOMIC",
         "statx",
         "statx_result",
     ]
@@ -703,12 +708,15 @@ if sys.platform == "linux" and sys.version_info >= (3, 15):
     AT_STATX_DONT_SYNC: Final[int]
     AT_STATX_FORCE_SYNC: Final[int]
     AT_STATX_SYNC_AS_STAT: Final[int]
+    RWF_ATOMIC: Final[int]
+    RWF_DONTCACHE: Final[int]
     STATX_ATIME: Final[int]
     STATX_BASIC_STATS: Final[int]
     STATX_BLOCKS: Final[int]
     STATX_BTIME: Final[int]
     STATX_CTIME: Final[int]
     STATX_DIOALIGN: Final[int]
+    STATX_DIO_READ_ALIGN: Final[int]
     STATX_GID: Final[int]
     STATX_INO: Final[int]
     STATX_MNT_ID: Final[int]
@@ -717,8 +725,10 @@ if sys.platform == "linux" and sys.version_info >= (3, 15):
     STATX_MTIME: Final[int]
     STATX_NLINK: Final[int]
     STATX_SIZE: Final[int]
+    STATX_SUBVOL: Final[int]
     STATX_TYPE: Final[int]
     STATX_UID: Final[int]
+    STATX_WRITE_ATOMIC: Final[int]
 
 if sys.platform != "win32":
     O_FSYNC: Final[int]
@@ -1408,6 +1418,18 @@ if sys.platform == "linux" and sys.version_info >= (3, 15):
         def stx_dio_mem_align(self) -> int | None: ...
         @property
         def stx_dio_offset_align(self) -> int | None: ...
+        @property
+        def stx_subvol(self) -> int | None: ...
+        @property
+        def stx_atomic_write_unit_min(self) -> int | None: ...
+        @property
+        def stx_atomic_write_unit_max(self) -> int | None: ...
+        @property
+        def stx_atomic_write_segments_max(self) -> int | None: ...
+        @property
+        def stx_dio_read_offset_align(self) -> int | None: ...
+        @property
+        def stx_atomic_write_unit_max_opt(self) -> int | None: ...
 
     def statx(
         path: FileDescriptorOrPath, mask: int, *, flags: int = 0, dir_fd: int | None = None, follow_symlinks: bool = True
diff --git a/stdlib/posix.pyi b/stdlib/posix.pyi
index 36bb5be18e88..c8bbc098b0b0 100644
--- a/stdlib/posix.pyi
+++ b/stdlib/posix.pyi
@@ -272,11 +272,14 @@ if sys.platform != "win32":
             AT_STATX_DONT_SYNC as AT_STATX_DONT_SYNC,
             AT_STATX_FORCE_SYNC as AT_STATX_FORCE_SYNC,
             AT_STATX_SYNC_AS_STAT as AT_STATX_SYNC_AS_STAT,
+            RWF_ATOMIC as RWF_ATOMIC,
+            RWF_DONTCACHE as RWF_DONTCACHE,
             STATX_ATIME as STATX_ATIME,
             STATX_BASIC_STATS as STATX_BASIC_STATS,
             STATX_BLOCKS as STATX_BLOCKS,
             STATX_BTIME as STATX_BTIME,
             STATX_CTIME as STATX_CTIME,
+            STATX_DIO_READ_ALIGN as STATX_DIO_READ_ALIGN,
             STATX_DIOALIGN as STATX_DIOALIGN,
             STATX_GID as STATX_GID,
             STATX_INO as STATX_INO,
@@ -286,8 +289,10 @@ if sys.platform != "win32":
             STATX_MTIME as STATX_MTIME,
             STATX_NLINK as STATX_NLINK,
             STATX_SIZE as STATX_SIZE,
+            STATX_SUBVOL as STATX_SUBVOL,
             STATX_TYPE as STATX_TYPE,
             STATX_UID as STATX_UID,
+            STATX_WRITE_ATOMIC as STATX_WRITE_ATOMIC,
             _clearenv as _clearenv,
             statx as statx,
             statx_result as statx_result,
diff --git a/stdlib/socket.pyi b/stdlib/socket.pyi
index e8d8f1a0d424..948092d3ce18 100644
--- a/stdlib/socket.pyi
+++ b/stdlib/socket.pyi
@@ -961,6 +961,11 @@ if sys.platform == "linux" and sys.version_info >= (3, 13):
 
     __all__ += ["NI_IDN", "SO_BINDTOIFINDEX"]
 
+if sys.platform == "linux" and sys.version_info >= (3, 15):
+    from _socket import SO_PASSRIGHTS as SO_PASSRIGHTS
+
+    __all__ += ["SO_PASSRIGHTS"]
+
 if sys.version_info >= (3, 12):
     from _socket import (
         IP_ADD_SOURCE_MEMBERSHIP as IP_ADD_SOURCE_MEMBERSHIP,