diff --git a/library/Cargo.lock b/library/Cargo.lock
index 59b76d8d4427d..268367cd9c144 100644
--- a/library/Cargo.lock
+++ b/library/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -158,9 +158,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.159"
+version = "0.2.161"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "561d97a539a36e26a9a5fad1ea11a3039a67714694aaa379433e580854bc3dc5"
+checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
 dependencies = [
  "rustc-std-workspace-core",
 ]
diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index 358bd25ff1bc6..5f8dcde189bcf 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -39,7 +39,7 @@ miniz_oxide = { version = "0.7.0", optional = true, default-features = false }
 addr2line = { version = "0.22.0", optional = true, default-features = false }
 
 [target.'cfg(not(all(windows, target_env = "msvc")))'.dependencies]
-libc = { version = "0.2.159", default-features = false, features = [
+libc = { version = "0.2.161", default-features = false, features = [
     'rustc-dep-of-std',
 ], public = true }
 
diff --git a/library/std/src/sys/pal/unix/process/process_unix.rs b/library/std/src/sys/pal/unix/process/process_unix.rs
index 4551d49e841f7..b490cad1b32cd 100644
--- a/library/std/src/sys/pal/unix/process/process_unix.rs
+++ b/library/std/src/sys/pal/unix/process/process_unix.rs
@@ -575,16 +575,6 @@ impl Command {
             }
         }
 
-        // Solaris, glibc 2.29+, and musl 1.24+ can set a new working directory,
-        // and maybe others will gain this non-POSIX function too. We'll check
-        // for this weak symbol as soon as it's needed, so we can return early
-        // otherwise to do a manual chdir before exec.
-        weak! {
-            fn posix_spawn_file_actions_addchdir_np(
-                *mut libc::posix_spawn_file_actions_t,
-                *const libc::c_char
-            ) -> libc::c_int
-        }
         let addchdir = match self.get_cwd() {
             Some(cwd) => {
                 if cfg!(target_vendor = "apple") {
@@ -597,7 +587,7 @@ impl Command {
                         return Ok(None);
                     }
                 }
-                match posix_spawn_file_actions_addchdir_np.get() {
+                match get_posix_spawn_addchdir() {
                     Some(f) => Some((f, cwd)),
                     None => return Ok(None),
                 }
@@ -871,6 +861,40 @@ impl Command {
     }
 }
 
+type PosixSpawnAddChdirFn =
+    unsafe extern "C" fn(*mut libc::posix_spawn_file_actions_t, *const libc::c_char) -> libc::c_int;
+
+/// Get the function pointer for adding a chdir action to a `posix_spawn_file_actions_t`, if
+/// available, assuming a dynamic libc.
+#[cfg(not(all(target_os = "linux", target_env = "musl")))]
+fn get_posix_spawn_addchdir() -> Option<PosixSpawnAddChdirFn> {
+    use crate::sys::weak::weak;
+
+    // Solaris and glibc 2.29+ can set a new working directory, and maybe others will gain this
+    // non-POSIX function too. We'll check for this weak symbol as soon as it's needed, so we can
+    // return early otherwise to do a manual chdir before exec.
+    weak! {
+        fn posix_spawn_file_actions_addchdir_np(
+            *mut libc::posix_spawn_file_actions_t,
+            *const libc::c_char
+        ) -> libc::c_int
+    }
+
+    posix_spawn_file_actions_addchdir_np.get()
+}
+
+/// Get the function pointer for adding a chdir action to a `posix_spawn_file_actions_t`, if
+/// available, on platforms where the function is known to exist.
+///
+/// Weak symbol lookup doesn't work with statically linked libcs, so in cases where static linking
+/// is possible we need to either check for the presence of the symbol at compile time or know about
+/// it upfront.
+#[cfg(all(target_os = "linux", target_env = "musl"))]
+fn get_posix_spawn_addchdir() -> Option<PosixSpawnAddChdirFn> {
+    // Our minimum required musl supports this function, so we can just use it.
+    Some(libc::posix_spawn_file_actions_addchdir_np)
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Processes
 ////////////////////////////////////////////////////////////////////////////////