diff --git a/Makefile.rhelver b/Makefile.rhelver
index 207c5b824..40f70faf5 100644
--- a/Makefile.rhelver
+++ b/Makefile.rhelver
@@ -12,7 +12,7 @@ RHEL_MINOR = 99
 #
 # Use this spot to avoid future merge conflicts.
 # Do not trim this comment.
-RHEL_RELEASE = 35
+RHEL_RELEASE = 38
 
 #
 # RHEL_REBASE_NUM
diff --git a/kernel-aarch64-64k-debug-rhel.config b/kernel-aarch64-64k-debug-rhel.config
index 89b9e9e57..db7afe38c 100644
--- a/kernel-aarch64-64k-debug-rhel.config
+++ b/kernel-aarch64-64k-debug-rhel.config
@@ -7744,7 +7744,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-64k-rhel.config b/kernel-aarch64-64k-rhel.config
index 8602134fc..664115737 100644
--- a/kernel-aarch64-64k-rhel.config
+++ b/kernel-aarch64-64k-rhel.config
@@ -7718,7 +7718,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-debug-rhel.config b/kernel-aarch64-debug-rhel.config
index eaeb296eb..16760c399 100644
--- a/kernel-aarch64-debug-rhel.config
+++ b/kernel-aarch64-debug-rhel.config
@@ -7741,7 +7741,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-rhel.config b/kernel-aarch64-rhel.config
index f95b4a8a7..72d7835e8 100644
--- a/kernel-aarch64-rhel.config
+++ b/kernel-aarch64-rhel.config
@@ -7715,7 +7715,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-rt-64k-debug-rhel.config b/kernel-aarch64-rt-64k-debug-rhel.config
index 8a47bbae6..eae26c460 100644
--- a/kernel-aarch64-rt-64k-debug-rhel.config
+++ b/kernel-aarch64-rt-64k-debug-rhel.config
@@ -7790,7 +7790,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-rt-64k-rhel.config b/kernel-aarch64-rt-64k-rhel.config
index 9998a5f43..179082f64 100644
--- a/kernel-aarch64-rt-64k-rhel.config
+++ b/kernel-aarch64-rt-64k-rhel.config
@@ -7764,7 +7764,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-rt-debug-rhel.config b/kernel-aarch64-rt-debug-rhel.config
index b9d4a875a..a0e22db77 100644
--- a/kernel-aarch64-rt-debug-rhel.config
+++ b/kernel-aarch64-rt-debug-rhel.config
@@ -7786,7 +7786,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-aarch64-rt-rhel.config b/kernel-aarch64-rt-rhel.config
index ee30958b8..58f15f145 100644
--- a/kernel-aarch64-rt-rhel.config
+++ b/kernel-aarch64-rt-rhel.config
@@ -7760,7 +7760,7 @@ CONFIG_UCSI_ACPI=y
 CONFIG_UCSI_CCG=m
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 CONFIG_UEFI_CPER_ARM=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
diff --git a/kernel-ppc64le-debug-rhel.config b/kernel-ppc64le-debug-rhel.config
index 77e770d73..df2221511 100644
--- a/kernel-ppc64le-debug-rhel.config
+++ b/kernel-ppc64le-debug-rhel.config
@@ -7155,7 +7155,7 @@ CONFIG_UCSI_ACPI=y
 # CONFIG_UCSI_STM32G0 is not set
 # CONFIG_UDBG_RTAS_CONSOLE is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
 CONFIG_UHID=m
diff --git a/kernel-ppc64le-rhel.config b/kernel-ppc64le-rhel.config
index 245f7287d..cd174a3c1 100644
--- a/kernel-ppc64le-rhel.config
+++ b/kernel-ppc64le-rhel.config
@@ -7131,7 +7131,7 @@ CONFIG_UCSI_ACPI=y
 # CONFIG_UCSI_STM32G0 is not set
 # CONFIG_UDBG_RTAS_CONSOLE is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
 CONFIG_UHID=m
diff --git a/kernel-s390x-debug-rhel.config b/kernel-s390x-debug-rhel.config
index 0e08beeeb..cf5482344 100644
--- a/kernel-s390x-debug-rhel.config
+++ b/kernel-s390x-debug-rhel.config
@@ -7141,7 +7141,7 @@ CONFIG_UCSI_ACPI=y
 # CONFIG_UCSI_CCG is not set
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
 CONFIG_UHID=m
diff --git a/kernel-s390x-rhel.config b/kernel-s390x-rhel.config
index 035e66801..758547bc2 100644
--- a/kernel-s390x-rhel.config
+++ b/kernel-s390x-rhel.config
@@ -7117,7 +7117,7 @@ CONFIG_UCSI_ACPI=y
 # CONFIG_UCSI_CCG is not set
 # CONFIG_UCSI_STM32G0 is not set
 CONFIG_UDF_FS=m
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
 CONFIG_UHID=m
diff --git a/kernel-s390x-zfcpdump-rhel.config b/kernel-s390x-zfcpdump-rhel.config
index 2422f7f77..1cdee37b2 100644
--- a/kernel-s390x-zfcpdump-rhel.config
+++ b/kernel-s390x-zfcpdump-rhel.config
@@ -7138,7 +7138,7 @@ CONFIG_UCSI_ACPI=y
 # CONFIG_UCSI_CCG is not set
 # CONFIG_UCSI_STM32G0 is not set
 # CONFIG_UDF_FS is not set
-# CONFIG_UDMABUF is not set
+CONFIG_UDMABUF=y
 # CONFIG_UEVENT_HELPER is not set
 # CONFIG_UFS_FS is not set
 CONFIG_UHID=m
diff --git a/kernel.changelog b/kernel.changelog
index 254b84453..c6d725c1f 100644
--- a/kernel.changelog
+++ b/kernel.changelog
@@ -1,7 +1,19 @@
-* Fri Jun 27 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.67a993863163.35]
+* Mon Jun 30 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc4.38]
 - redhat/configs: clang_lto: disable CONFIG_FORTIFY_KUNIT_TEST (Scott Weaver)
 Resolves: 
 
+* Mon Jun 30 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc4.37]
+- Linux v6.16.0-0.rc4
+Resolves: 
+
+* Sun Jun 29 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.dfba48a70cb6.36]
+- Linux v6.16.0-0.rc3.dfba48a70cb6
+Resolves: 
+
+* Sat Jun 28 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.aaf724ed6926.35]
+- Linux v6.16.0-0.rc3.aaf724ed6926
+Resolves: 
+
 * Fri Jun 27 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.67a993863163.34]
 - redhat/kernel.spec.template: add drivers/net and drivers/net/hw selftest (Hangbin Liu)
 - uki: enable FIPS mode (Vitaly Kuznetsov)
diff --git a/kernel.spec b/kernel.spec
index a10c5e286..a5d120457 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -162,13 +162,13 @@ Summary: The Linux kernel
 %define specrpmversion 6.16.0
 %define specversion 6.16.0
 %define patchversion 6.16
-%define pkgrelease 0.rc3.250627g67a993863163.35
+%define pkgrelease 0.rc4.38
 %define kversion 6
-%define tarfile_release 6.16-rc3-190-g67a993863163
+%define tarfile_release 6.16-rc4
 # This is needed to do merge window version magic
 %define patchlevel 16
 # This allows pkg_release to have configurable %%{?dist} tag
-%define specrelease 0.rc3.250627g67a993863163.35%{?buildid}%{?dist}
+%define specrelease 0.rc4.38%{?buildid}%{?dist}
 # This defines the kabi tarball version
 %define kabiversion 6.16.0
 
@@ -4349,9 +4349,18 @@ fi\
 #
 #
 %changelog
-* Fri Jun 27 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.67a993863163.35]
+* Mon Jun 30 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc4.38]
 - redhat/configs: clang_lto: disable CONFIG_FORTIFY_KUNIT_TEST (Scott Weaver)
 
+* Mon Jun 30 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc4.37]
+- Linux v6.16.0-0.rc4
+
+* Sun Jun 29 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.dfba48a70cb6.36]
+- Linux v6.16.0-0.rc3.dfba48a70cb6
+
+* Sat Jun 28 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.aaf724ed6926.35]
+- Linux v6.16.0-0.rc3.aaf724ed6926
+
 * Fri Jun 27 2025 Fedora Kernel Team <kernel-team@fedoraproject.org> [6.16.0-0.rc3.67a993863163.34]
 - redhat/kernel.spec.template: add drivers/net and drivers/net/hw selftest (Hangbin Liu)
 - uki: enable FIPS mode (Vitaly Kuznetsov)
diff --git a/patch-6.16-redhat.patch b/patch-6.16-redhat.patch
index 506d44432..8a92b6959 100644
--- a/patch-6.16-redhat.patch
+++ b/patch-6.16-redhat.patch
@@ -190,7 +190,7 @@ index 000000000000..85771d74c34f
 +
 +endmenu
 diff --git a/Makefile b/Makefile
-index f884dfe10246..600198d612c8 100644
+index 1c9ea229809f..4b83d7676140 100644
 --- a/Makefile
 +++ b/Makefile
 @@ -355,6 +355,17 @@ ifneq ($(filter install,$(MAKECMDGOALS)),)
@@ -336,7 +336,7 @@ index f244c5560e7f..464f915011b8 100644
  	/* boot_command_line has been already set up in early.c */
  	*cmdline_p = boot_command_line;
 diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
-index 8feb8fd2957a..4519def69684 100644
+index 27125e009847..40e5c9b1e707 100644
 --- a/arch/x86/kernel/cpu/common.c
 +++ b/arch/x86/kernel/cpu/common.c
 @@ -1720,6 +1720,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
diff --git a/sources b/sources
index 0b60307c3..bedcfffae 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
-SHA512 (linux-6.16-rc3-190-g67a993863163.tar.xz) = 2e39cbd628098de1c03a26457610f6fda2bfd0a22787fece951f635f48b303261a6aeede9010109e583af2c05bc671861bc210f0f24d49842e335be0966649a1
-SHA512 (kernel-abi-stablelists-6.16.0.tar.xz) = d606128c77f405922fcc3bac7483358b96b666bf1fc4a108884c9122e9dac0d25f649b512316b293487f7c6560eae9ed0189158d27696b359ffd3b36a5758bbc
-SHA512 (kernel-kabi-dw-6.16.0.tar.xz) = 1184549d93de7afee24bc8ef690a7d3b14c901be1082bd5fa333fa9177c0ce211d868d1eabb54d761f742558848a5a95e453bd1c782ec2ccb048dde60d8a5bc4
+SHA512 (linux-6.16-rc4.tar.xz) = 1dc3d6636d1f7d6ce599140061428be3791728b48505691451bae7a9ca2dd084336f33e8123413ad90fd793f86021b16f9b772bd4de6ea7f3901b789e71306ec
+SHA512 (kernel-abi-stablelists-6.16.0.tar.xz) = 002677cba0e4918e94bd44acfa2196be730fb3179701d0d5a08e4073b241ee1fd8df3c341f22a7af26a5f37734d4f3f3cb4f104df1f3a5462d0da147b10c275d
+SHA512 (kernel-kabi-dw-6.16.0.tar.xz) = aab947d61d310671a7fd1fe53f7c1aa70af316034b6540910fa223913f5b9c752867fbe6f6b4209aa540e75a4a6a50d566a32fbce539e1eb3501404ec78e7b02