diff --git a/nixos/tests/kernel-generic.nix b/nixos/tests/kernel-generic.nix
index cd32049dff46..62d80db2915b 100644
--- a/nixos/tests/kernel-generic.nix
+++ b/nixos/tests/kernel-generic.nix
@@ -31,7 +31,6 @@ with pkgs; {
   linux_4_19 = makeKernelTest "4.19" linuxPackages_4_19;
   linux_5_4 = makeKernelTest "5.4" linuxPackages_5_4;
   linux_5_10 = makeKernelTest "5.10" linuxPackages_5_10;
-  linux_5_12 = makeKernelTest "5.12" linuxPackages_5_12;
   linux_5_13 = makeKernelTest "5.13" linuxPackages_5_13;
 
   linux_testing = makeKernelTest "testing" linuxPackages_testing;
diff --git a/pkgs/os-specific/linux/kernel/hardened/patches.json b/pkgs/os-specific/linux/kernel/hardened/patches.json
index 3acd18a4b281..c3f0aa742574 100644
--- a/pkgs/os-specific/linux/kernel/hardened/patches.json
+++ b/pkgs/os-specific/linux/kernel/hardened/patches.json
@@ -17,12 +17,6 @@
         "sha256": "0zqv77k0i4q5w4qhgiknvrh4fav1jc4a2i9cdracwqlrk8fgmiih",
         "url": "https://github.com/anthraxx/linux-hardened/releases/download/5.10.57-hardened1/linux-hardened-5.10.57-hardened1.patch"
     },
-    "5.12": {
-        "extra": "-hardened1",
-        "name": "linux-hardened-5.12.19-hardened1.patch",
-        "sha256": "1nr3922gd6il69k5cpp9g3knpy6yjb6jsmpi9k4v02bkvypg86dc",
-        "url": "https://github.com/anthraxx/linux-hardened/releases/download/5.12.19-hardened1/linux-hardened-5.12.19-hardened1.patch"
-    },
     "5.4": {
         "extra": "-hardened1",
         "name": "linux-hardened-5.4.139-hardened1.patch",
diff --git a/pkgs/os-specific/linux/kernel/linux-5.12.nix b/pkgs/os-specific/linux/kernel/linux-5.12.nix
deleted file mode 100644
index e1e7aec2ce2d..000000000000
--- a/pkgs/os-specific/linux/kernel/linux-5.12.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ lib, buildPackages, fetchurl, perl, buildLinux, nixosTests, modDirVersionArg ? null, ... } @ args:
-
-with lib;
-
-buildLinux (args // rec {
-  version = "5.12.19";
-
-  # modDirVersion needs to be x.y.z, will automatically add .0 if needed
-  modDirVersion = if (modDirVersionArg == null) then concatStringsSep "." (take 3 (splitVersion "${version}.0")) else modDirVersionArg;
-
-  # branchVersion needs to be x.y
-  extraMeta.branch = versions.majorMinor version;
-
-  src = fetchurl {
-    url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
-    sha256 = "0wscz736n13m833cd12lskn47r0b8ki4fhgpjnwga0jsab9iqf79";
-  };
-
-  kernelTests = args.kernelTests or [ nixosTests.kernel-generic.linux_5_12 ];
-} // (args.argsOverride or {}))
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cff389cf951b..dddc87f9a92c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21173,13 +21173,6 @@ with pkgs;
     ];
   };
 
-  linux_5_12 = callPackage ../os-specific/linux/kernel/linux-5.12.nix {
-    kernelPatches = [
-      kernelPatches.bridge_stp_helper
-      kernelPatches.request_key_helper
-    ];
-  };
-
   linux_5_13 = callPackage ../os-specific/linux/kernel/linux-5.13.nix {
     kernelPatches = [
       kernelPatches.bridge_stp_helper
@@ -21503,7 +21496,6 @@ with pkgs;
   linuxPackages_4_19 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_4_19);
   linuxPackages_5_4 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_5_4);
   linuxPackages_5_10 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_5_10);
-  linuxPackages_5_12 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_5_12);
   linuxPackages_5_13 = recurseIntoAttrs (linuxPackagesFor pkgs.linux_5_13);
 
   # When adding to the list above:
@@ -21537,7 +21529,7 @@ with pkgs;
   # Hardened Linux
   hardenedLinuxPackagesFor = kernel': overrides:
     let # Note: We use this hack since the hardened patches can lag behind and we don't want to delay updates:
-      linux_latest_for_hardened = pkgs.linux_5_12;
+      linux_latest_for_hardened = pkgs.linux_5_10;
       kernel = (if kernel' == pkgs.linux_latest then linux_latest_for_hardened else kernel').override overrides;
     in linuxPackagesFor (kernel.override {
       structuredExtraConfig = import ../os-specific/linux/kernel/hardened/config.nix {