diff --git a/linker/Android.bp b/linker/Android.bp
index 0ccd16d..4e158e4 100644
--- a/linker/Android.bp
+++ b/linker/Android.bp
@@ -328,6 +328,10 @@
 
     sanitize: {
         hwaddress: false,
+        // TODO(mitchp): For now, disable MTE globals in the linker. MTE globals
+        // change the relocation semantics, and GVs that are touched before the
+        // linker has the chance to relocate itself have to be annotated.
+        memtag_globals: false,
     },
 
     static_libs: [
diff --git a/linker/dlfcn.cpp b/linker/dlfcn.cpp
index fee19f4..82f2728 100644
--- a/linker/dlfcn.cpp
+++ b/linker/dlfcn.cpp
@@ -331,6 +331,7 @@
     __libdl_info->gnu_bloom_filter_ = linker_si.gnu_bloom_filter_;
     __libdl_info->gnu_bucket_ = linker_si.gnu_bucket_;
     __libdl_info->gnu_chain_ = linker_si.gnu_chain_;
+    __libdl_info->memtag_dynamic_entries_ = linker_si.memtag_dynamic_entries_;
 
     __libdl_info->ref_count_ = 1;
     __libdl_info->strtab_size_ = linker_si.strtab_size_;
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 135eaa3..13ce6ef 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -51,6 +51,7 @@
 #include <android-base/scopeguard.h>
 #include <async_safe/log.h>
 #include <bionic/pthread_internal.h>
+#include <platform/bionic/mte.h>
 
 // Private C library headers.
 
@@ -2339,7 +2340,7 @@
         void* tls_block = get_tls_block_for_this_thread(tls_module, /*should_alloc=*/true);
         *symbol = static_cast<char*>(tls_block) + sym->st_value;
       } else {
-        *symbol = reinterpret_cast<void*>(found->resolve_symbol_address(sym));
+        *symbol = get_tagged_address(reinterpret_cast<void*>(found->resolve_symbol_address(sym)));
       }
       failure_guard.Disable();
       LD_LOG(kLogDlsym,
@@ -2770,8 +2771,11 @@
 }
 
 void soinfo::apply_relr_reloc(ElfW(Addr) offset) {
-  ElfW(Addr) address = offset + load_bias;
-  *reinterpret_cast<ElfW(Addr)*>(address) += load_bias;
+  ElfW(Addr)* tagged_address = reinterpret_cast<ElfW(Addr)*>(
+      get_tagged_address(reinterpret_cast<void*>(offset + load_bias)));
+  ElfW(Addr) tagged_result = reinterpret_cast<ElfW(Addr)>(
+      get_tagged_address(reinterpret_cast<void*>(*tagged_address + load_bias)));
+  *tagged_address = tagged_result;
 }
 
 // Process relocations in SHT_RELR section (experimental).
@@ -3304,6 +3308,18 @@
   // it each time we look up a symbol with a version.
   if (!validate_verdef_section(this)) return false;
 
+  // MTE globals requires remapping data segments with PROT_MTE as anonymous mappings, because file
+  // based mappings may not be backed by tag-capable memory (see "MAP_ANONYMOUS" on
+  // https://www.kernel.org/doc/html/latest/arch/arm64/memory-tagging-extension.html). This is only
+  // done if the binary has MTE globals (evidenced by the dynamic table entries), as it destroys
+  // page sharing. It's also only done on devices that support MTE, because the act of remapping
+  // pages is unnecessary on non-MTE devices (where we might still run MTE-globals enabled code).
+  if (mte_supported() && memtag_globals() && memtag_globalssz() &&
+      remap_memtag_globals_segments(phdr, phnum, base) == 0) {
+    tag_globals();
+    protect_memtag_globals_ro_segments(phdr, phnum, base);
+  }
+
   flags_ |= FLAG_PRELINKED;
   return true;
 }
@@ -3375,6 +3391,14 @@
     return false;
   }
 
+  if (mte_supported() && memtag_globals() && memtag_globalssz()) {
+    // The linker's full path is not available until the main executable is loaded, as it's obtained
+    // from DT_INTERP. We manually rename the linker's segments later, but have a best-effort name
+    // in case we find a bug prior to loading the main executable.
+    const char* soname = is_linker() ? "linker" : get_realpath();
+    name_memtag_globals_segments(phdr, phnum, base, soname);
+  }
+
   /* Handle serializing/sharing the RELRO segment */
   if (extinfo && (extinfo->flags & ANDROID_DLEXT_WRITE_RELRO)) {
     if (phdr_table_serialize_gnu_relro(phdr, phnum, load_bias,
@@ -3407,6 +3431,47 @@
   return true;
 }
 
+// https://github.com/ARM-software/abi-aa/blob/main/memtagabielf64/memtagabielf64.rst#global-variable-tagging
+void soinfo::tag_globals() {
+  if (is_linked()) return;
+  if (flags_ & FLAG_GLOBALS_TAGGED) return;
+  flags_ |= FLAG_GLOBALS_TAGGED;
+
+  constexpr size_t kTagGranuleSize = 16;
+  const uint8_t* descriptor_stream = reinterpret_cast<const uint8_t*>(memtag_globals());
+
+  if (memtag_globalssz() == 0) {
+    DL_ERR("Invalid memtag descriptor pool size: %zu", memtag_globalssz());
+  }
+
+  uint64_t addr = 0;
+  uleb128_decoder decoder(descriptor_stream, memtag_globalssz());
+  // Don't ever generate tag zero, to easily distinguish between tagged and
+  // untagged globals in register/tag dumps.
+  uint64_t last_tag_mask = 1;
+  constexpr uint64_t kMemtagStepVarintReservedBits = 3;
+
+  while (decoder.has_bytes()) {
+    uint64_t value = decoder.pop_front();
+    uint64_t step = value >> kMemtagStepVarintReservedBits;
+    uint64_t granules_to_tag = value & ((1 << kMemtagStepVarintReservedBits) - 1);
+    if (granules_to_tag == 0) {
+      granules_to_tag = decoder.pop_front() + 1;
+    }
+
+    addr += step * kTagGranuleSize;
+    void* tagged_addr = insert_random_tag(reinterpret_cast<void*>(addr + load_bias), last_tag_mask);
+    uint64_t tag = (reinterpret_cast<uint64_t>(tagged_addr) >> 56) & 0x0f;
+    last_tag_mask = 1 | (1 << tag);
+
+    for (size_t k = 0; k < granules_to_tag; k++) {
+      auto* granule = static_cast<uint8_t*>(tagged_addr) + k * kTagGranuleSize;
+      set_memory_tag(static_cast<void*>(granule));
+    }
+    addr += granules_to_tag * kTagGranuleSize;
+  }
+}
+
 static std::vector<android_namespace_t*> init_default_namespace_no_config(bool is_asan, bool is_hwasan) {
   g_default_namespace.set_isolated(false);
   auto default_ld_paths = is_asan ? kAsanDefaultLdPaths : (
diff --git a/linker/linker_main.cpp b/linker/linker_main.cpp
index 5f5eba4..c1a8929 100644
--- a/linker/linker_main.cpp
+++ b/linker/linker_main.cpp
@@ -44,7 +44,9 @@
 #include "linker_tls.h"
 #include "linker_utils.h"
 
+#include "platform/bionic/macros.h"
 #include "private/KernelArgumentBlock.h"
+#include "private/bionic_auxv.h"
 #include "private/bionic_call_ifunc_resolver.h"
 #include "private/bionic_globals.h"
 #include "private/bionic_tls.h"
@@ -78,7 +80,8 @@
 // TODO (dimtiry): remove somain, rename solist to solist_head
 static soinfo* solist;
 static soinfo* sonext;
-static soinfo* somain; // main process, always the one after libdl_info
+// main process, always the one after libdl_info
+BIONIC_USED_BEFORE_LINKER_RELOCATES static soinfo* somain;
 static soinfo* solinker;
 static soinfo* vdso; // vdso if present
 
@@ -390,9 +393,16 @@
     interp = kFallbackLinkerPath;
   }
   solinker->set_realpath(interp);
+  if (solinker->memtag_globals() && solinker->memtag_globalssz()) {
+    name_memtag_globals_segments(solinker->phdr, solinker->phnum, solinker->load_bias,
+                                 solinker->get_realpath());
+  }
   init_link_map_head(*solinker);
 
 #if defined(__aarch64__)
+  __libc_init_mte(somain->memtag_dynamic_entries(), somain->phdr, somain->phnum, somain->load_bias,
+                  args.argv);
+
   if (exe_to_load == nullptr) {
     // Kernel does not add PROT_BTI to executable pages of the loaded ELF.
     // Apply appropriate protections here if it is needed.
@@ -404,9 +414,6 @@
                      strerror(errno));
     }
   }
-
-  __libc_init_mte(somain->memtag_dynamic_entries(), somain->phdr, somain->phnum, somain->load_bias,
-                  args.argv);
 #endif
 
   // Register the main executable and the linker upfront to have
@@ -605,7 +612,7 @@
 const unsigned kRelSzTag = DT_RELSZ;
 #endif
 
-extern __LIBC_HIDDEN__ ElfW(Ehdr) __ehdr_start;
+BIONIC_USED_BEFORE_LINKER_RELOCATES extern __LIBC_HIDDEN__ ElfW(Ehdr) __ehdr_start;
 
 static void call_ifunc_resolvers_for_section(RelType* begin, RelType* end) {
   auto ehdr = reinterpret_cast<ElfW(Addr)>(&__ehdr_start);
@@ -663,6 +670,16 @@
   }
 }
 
+// Remapping MTE globals segments happens before the linker relocates itself, and so can't use
+// memcpy() from string.h. This function is compiled with -ffreestanding.
+void linker_memcpy(void* dest, const void* src, size_t n) {
+  char* dest_bytes = reinterpret_cast<char*>(dest);
+  const char* src_bytes = reinterpret_cast<const char*>(src);
+  for (size_t i = 0; i < n; ++i) {
+    dest_bytes[i] = src_bytes[i];
+  }
+}
+
 // Detect an attempt to run the linker on itself. e.g.:
 //   /system/bin/linker64 /system/bin/linker64
 // Use priority-1 to run this constructor before other constructors.
diff --git a/linker/linker_main.h b/linker/linker_main.h
index 724f43c..53fc58b 100644
--- a/linker/linker_main.h
+++ b/linker/linker_main.h
@@ -70,3 +70,5 @@
 soinfo* solist_get_head();
 soinfo* solist_get_somain();
 soinfo* solist_get_vdso();
+
+void linker_memcpy(void* dest, const void* src, size_t n);
\ No newline at end of file
diff --git a/linker/linker_phdr.cpp b/linker/linker_phdr.cpp
index 0ad0fd5..bec6994 100644
--- a/linker/linker_phdr.cpp
+++ b/linker/linker_phdr.cpp
@@ -36,10 +36,12 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
+#include "android-base/unique_fd.h"
 #include "linker.h"
+#include "linker_debug.h"
 #include "linker_dlwarning.h"
 #include "linker_globals.h"
-#include "linker_debug.h"
+#include "linker_main.h"
 #include "linker_utils.h"
 
 #include "private/CFIShadow.h" // For kLibraryAlignment
@@ -862,6 +864,108 @@
   return _phdr_table_set_load_prot(phdr_table, phdr_count, load_bias, prot);
 }
 
+static bool segment_needs_memtag_globals_remapping(const ElfW(Phdr) * phdr) {
+  // For now, MTE globals is only supported on writeable data segments.
+  return phdr->p_type == PT_LOAD && !(phdr->p_flags & PF_X) && (phdr->p_flags & PF_W);
+}
+
+/* When MTE globals are requested by the binary, and when the hardware supports
+ * it, remap the executable's PT_LOAD data pages to have PROT_MTE.
+ *
+ * Input:
+ *   phdr_table  -> program header table
+ *   phdr_count  -> number of entries in tables
+ *   load_bias   -> load bias
+ * Return:
+ *   0 on success, -1 on failure (error code in errno).
+ */
+int remap_memtag_globals_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                  ElfW(Addr) load_bias) {
+  for (const ElfW(Phdr)* phdr = phdr_table; phdr < phdr_table + phdr_count; phdr++) {
+    if (!segment_needs_memtag_globals_remapping(phdr)) {
+      continue;
+    }
+
+    uintptr_t seg_page_start = page_start(phdr->p_vaddr) + load_bias;
+    uintptr_t seg_page_end = page_end(phdr->p_vaddr + phdr->p_memsz) + load_bias;
+    size_t seg_page_aligned_size = seg_page_end - seg_page_start;
+
+    int prot = PFLAGS_TO_PROT(phdr->p_flags);
+    // For anonymous private mappings, it may be possible to simply mprotect()
+    // the PROT_MTE flag over the top. For file-based mappings, this will fail,
+    // and we'll need to fall back. We also allow PROT_WRITE here to allow
+    // writing memory tags (in `soinfo::tag_globals()`), and set these sections
+    // back to read-only after tags are applied (similar to RELRO).
+#if defined(__aarch64__)
+    prot |= PROT_MTE;
+#endif  // defined(__aarch64__)
+    if (mprotect(reinterpret_cast<void*>(seg_page_start), seg_page_aligned_size,
+                 prot | PROT_WRITE) == 0) {
+      continue;
+    }
+
+    void* mapping_copy = mmap(nullptr, seg_page_aligned_size, PROT_READ | PROT_WRITE,
+                              MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    linker_memcpy(mapping_copy, reinterpret_cast<void*>(seg_page_start), seg_page_aligned_size);
+
+    void* seg_addr = mmap(reinterpret_cast<void*>(seg_page_start), seg_page_aligned_size,
+                          prot | PROT_WRITE, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    if (seg_addr == MAP_FAILED) return -1;
+
+    linker_memcpy(seg_addr, mapping_copy, seg_page_aligned_size);
+    munmap(mapping_copy, seg_page_aligned_size);
+  }
+
+  return 0;
+}
+
+void protect_memtag_globals_ro_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                        ElfW(Addr) load_bias) {
+  for (const ElfW(Phdr)* phdr = phdr_table; phdr < phdr_table + phdr_count; phdr++) {
+    int prot = PFLAGS_TO_PROT(phdr->p_flags);
+    if (!segment_needs_memtag_globals_remapping(phdr) || (prot & PROT_WRITE)) {
+      continue;
+    }
+
+#if defined(__aarch64__)
+    prot |= PROT_MTE;
+#endif  // defined(__aarch64__)
+
+    uintptr_t seg_page_start = page_start(phdr->p_vaddr) + load_bias;
+    uintptr_t seg_page_end = page_end(phdr->p_vaddr + phdr->p_memsz) + load_bias;
+    size_t seg_page_aligned_size = seg_page_end - seg_page_start;
+    mprotect(reinterpret_cast<void*>(seg_page_start), seg_page_aligned_size, prot);
+  }
+}
+
+void name_memtag_globals_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                  ElfW(Addr) load_bias, const char* soname) {
+  for (const ElfW(Phdr)* phdr = phdr_table; phdr < phdr_table + phdr_count; phdr++) {
+    if (!segment_needs_memtag_globals_remapping(phdr)) {
+      continue;
+    }
+
+    uintptr_t seg_page_start = page_start(phdr->p_vaddr) + load_bias;
+    uintptr_t seg_page_end = page_end(phdr->p_vaddr + phdr->p_memsz) + load_bias;
+    size_t seg_page_aligned_size = seg_page_end - seg_page_start;
+
+    // For file-based mappings that we're now forcing to be anonymous mappings, set the VMA name to
+    // make debugging easier. The previous Android-kernel specific implementation captured the name
+    // by pointer from userspace, which meant we had to persist the name permanently in memory.
+    // Since Android13-5.10 (https://android-review.git.corp.google.com/c/kernel/common/+/1934723)
+    // though, we use the upstream-kernel implementation
+    // (https://github.com/torvalds/linux/commit/9a10064f5625d5572c3626c1516e0bebc6c9fe9b), which
+    // copies the name into kernel memory. It's a safe bet that any devices with Android 14 are
+    // using a kernel >= 5.10.
+    constexpr unsigned kVmaNameLimit = 80;
+    char vma_name[kVmaNameLimit];
+    async_safe_format_buffer(vma_name, kVmaNameLimit, "memtag:%s+0x%" PRIxPTR, soname,
+                             page_start(phdr->p_vaddr));
+    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, reinterpret_cast<void*>(seg_page_start),
+          seg_page_aligned_size, vma_name);
+  }
+}
+
 /* Change the protection of all loaded segments in memory to writable.
  * This is useful before performing relocations. Once completed, you
  * will have to call phdr_table_protect_segments to restore the original
diff --git a/linker/linker_phdr.h b/linker/linker_phdr.h
index 98bf020..092ea5d 100644
--- a/linker/linker_phdr.h
+++ b/linker/linker_phdr.h
@@ -148,3 +148,12 @@
 
 const char* phdr_table_get_interpreter_name(const ElfW(Phdr)* phdr_table, size_t phdr_count,
                                             ElfW(Addr) load_bias);
+
+int remap_memtag_globals_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                  ElfW(Addr) load_bias);
+
+void protect_memtag_globals_ro_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                        ElfW(Addr) load_bias);
+
+void name_memtag_globals_segments(const ElfW(Phdr) * phdr_table, size_t phdr_count,
+                                  ElfW(Addr) load_bias, const char* soname);
diff --git a/linker/linker_relocate.cpp b/linker/linker_relocate.cpp
index 952dade..1ee7bc6 100644
--- a/linker/linker_relocate.cpp
+++ b/linker/linker_relocate.cpp
@@ -44,6 +44,8 @@
 #include "linker_soinfo.h"
 #include "private/bionic_globals.h"
 
+#include <platform/bionic/mte.h>
+
 static bool is_tls_reloc(ElfW(Word) type) {
   switch (type) {
     case R_GENERIC_TLS_DTPMOD:
@@ -157,12 +159,19 @@
 
 static bool process_relocation_general(Relocator& relocator, const rel_t& reloc);
 
+static ElfW(Addr) apply_memtag(ElfW(Addr) sym_addr) {
+  if (sym_addr == 0) return sym_addr;  // Handle undefined weak symbols.
+
+  return reinterpret_cast<ElfW(Addr)>(get_tagged_address(reinterpret_cast<void*>(sym_addr)));
+}
+
 template <RelocMode Mode>
 __attribute__((always_inline))
 static bool process_relocation_impl(Relocator& relocator, const rel_t& reloc) {
   constexpr bool IsGeneral = Mode == RelocMode::General;
 
-  void* const rel_target = reinterpret_cast<void*>(reloc.r_offset + relocator.si->load_bias);
+  void* const rel_target =
+      reinterpret_cast<void*>(apply_memtag(reloc.r_offset + relocator.si->load_bias));
   const uint32_t r_type = ELFW(R_TYPE)(reloc.r_info);
   const uint32_t r_sym = ELFW(R_SYM)(reloc.r_info);
 
@@ -325,7 +334,7 @@
     // common in non-platform binaries.
     if (r_type == R_GENERIC_ABSOLUTE) {
       count_relocation_if<IsGeneral>(kRelocAbsolute);
-      const ElfW(Addr) result = sym_addr + get_addend_rel();
+      const ElfW(Addr) result = apply_memtag(sym_addr) + get_addend_rel();
       trace_reloc("RELO ABSOLUTE %16p <- %16p %s",
                   rel_target, reinterpret_cast<void*>(result), sym_name);
       *static_cast<ElfW(Addr)*>(rel_target) = result;
@@ -335,16 +344,29 @@
       // document (IHI0044F) specifies that R_ARM_GLOB_DAT has an addend, but Bionic isn't adding
       // it.
       count_relocation_if<IsGeneral>(kRelocAbsolute);
-      const ElfW(Addr) result = sym_addr + get_addend_norel();
-      trace_reloc("RELO GLOB_DAT %16p <- %16p %s",
-                  rel_target, reinterpret_cast<void*>(result), sym_name);
+      ElfW(Addr) result = apply_memtag(sym_addr) + get_addend_norel();
+      trace_reloc("RELO GLOB_DAT %16p <- %16p %s", rel_target, reinterpret_cast<void*>(result),
+                  sym_name);
       *static_cast<ElfW(Addr)*>(rel_target) = result;
       return true;
     } else if (r_type == R_GENERIC_RELATIVE) {
       // In practice, r_sym is always zero, but if it weren't, the linker would still look up the
       // referenced symbol (and abort if the symbol isn't found), even though it isn't used.
       count_relocation_if<IsGeneral>(kRelocRelative);
-      const ElfW(Addr) result = relocator.si->load_bias + get_addend_rel();
+      ElfW(Addr) result;
+      // MTE globals reuses the place bits for additional tag-derivation metadata for
+      // R_AARCH64_RELATIVE relocations, which makes it incompatible with
+      // `-Wl,--apply-dynamic-relocs`. This is enforced by lld, however there's nothing stopping
+      // Android binaries (particularly prebuilts) from building with this linker flag if they're
+      // not built with MTE globals. Thus, don't use the new relocation semantics if this DSO
+      // doesn't have MTE globals.
+      if (relocator.si->memtag_globals() && relocator.si->memtag_globalssz()) {
+        int64_t* place = static_cast<int64_t*>(rel_target);
+        int64_t offset = *place;
+        result = apply_memtag(relocator.si->load_bias + get_addend_rel() + offset) - offset;
+      } else {
+        result = relocator.si->load_bias + get_addend_rel();
+      }
       trace_reloc("RELO RELATIVE %16p <- %16p",
                   rel_target, reinterpret_cast<void*>(result));
       *static_cast<ElfW(Addr)*>(rel_target) = result;
diff --git a/linker/linker_sleb128.h b/linker/linker_sleb128.h
index 6bb3199..f48fda8 100644
--- a/linker/linker_sleb128.h
+++ b/linker/linker_sleb128.h
@@ -69,3 +69,32 @@
   const uint8_t* current_;
   const uint8_t* const end_;
 };
+
+class uleb128_decoder {
+ public:
+  uleb128_decoder(const uint8_t* buffer, size_t count) : current_(buffer), end_(buffer + count) {}
+
+  uint64_t pop_front() {
+    uint64_t value = 0;
+
+    size_t shift = 0;
+    uint8_t byte;
+
+    do {
+      if (current_ >= end_) {
+        async_safe_fatal("uleb128_decoder ran out of bounds");
+      }
+      byte = *current_++;
+      value |= (static_cast<size_t>(byte & 127) << shift);
+      shift += 7;
+    } while (byte & 128);
+
+    return value;
+  }
+
+  bool has_bytes() { return current_ < end_; }
+
+ private:
+  const uint8_t* current_;
+  const uint8_t* const end_;
+};
diff --git a/linker/linker_soinfo.h b/linker/linker_soinfo.h
index 622719d..092cbcc 100644
--- a/linker/linker_soinfo.h
+++ b/linker/linker_soinfo.h
@@ -66,9 +66,10 @@
                                          // soinfo is executed and this flag is
                                          // unset.
 #define FLAG_PRELINKED        0x00000400 // prelink_image has successfully processed this soinfo
+#define FLAG_GLOBALS_TAGGED 0x00000800   // globals have been tagged by MTE.
 #define FLAG_NEW_SOINFO       0x40000000 // new soinfo format
 
-#define SOINFO_VERSION 6
+#define SOINFO_VERSION 7
 
 ElfW(Addr) call_ifunc_resolver(ElfW(Addr) resolver_addr);
 
@@ -257,6 +258,8 @@
                   const android_dlextinfo* extinfo, size_t* relro_fd_offset);
   bool protect_relro();
 
+  void tag_globals();
+
   void add_child(soinfo* child);
   void remove_all_links();