diff --git a/.github/workflows/fuzzing.yml b/.github/workflows/fuzzing.yml
index 0c67b0484f..c2cb774d6f 100644
--- a/.github/workflows/fuzzing.yml
+++ b/.github/workflows/fuzzing.yml
@@ -1,6 +1,6 @@
 name: Fuzzing
 
-# spell-checker:ignore (people) taiki-e
+# spell-checker:ignore (people) bamf taiki-e
 # spell-checker:ignore (misc) fuzzer PIPESTATUS
 
 env:
@@ -113,7 +113,7 @@ jobs:
     name: Build and test uufuzz examples
     needs: detect
     if: needs.detect.outputs.all == 'true'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04 # Use GNU linked against newer glibc which enables some feature e.g. stty 51, and fuzz against it
     steps:
     - uses: actions/checkout@v7.0.1
       with:
@@ -121,6 +121,13 @@ jobs:
     - uses: Swatinem/rust-cache@v2
       with:
         workspaces: "fuzz -> target"
+    - name: Update GNU coreutils
+      run: |
+        sudo add-apt-repository -y ppa:bamf0/coreutils-reference
+        sudo apt-get update
+        apt-cache policy gnu-coreutils
+        sudo apt-get install -y gnu-coreutils=9.12-0ubuntu1~ppa1 coreutils-from-gnu coreutils-from-uutils- --allow-remove-essential
+        stty --version | grep 9.12
     - name: Build uufuzz library
       run: |
         cd fuzz/uufuzz
@@ -171,7 +178,7 @@ jobs:
     name: Fuzz (${{ matrix.target.name }})
     needs: detect
     if: needs.detect.outputs.targets != '[]'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04 # Use GNU linked against newer glibc which enables some feature e.g. stty 51, and fuzz against it
     timeout-minutes: 15
     env:
       RUN_FOR: 60
@@ -186,6 +193,12 @@ jobs:
     - uses: actions/checkout@v7.0.1
       with:
         persist-credentials: false
+    - name: Update GNU coreutils
+      run: |
+        sudo add-apt-repository -y ppa:bamf0/coreutils-reference
+        sudo apt-get update
+        sudo apt-get install -y gnu-coreutils=9.12-0ubuntu1~ppa1 coreutils-from-gnu coreutils-from-uutils- --allow-remove-essential
+        stty --version
     - name: Install `cargo-fuzz`
       uses: taiki-e/install-action@v2
       with: