diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6ed6a9e807..a9a3830425 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -221,7 +221,7 @@ jobs:
             pool: ubuntu-latest
           - jobname: linux-gcc
             cc: gcc
-            pool: ubuntu-latest
+            pool: ubuntu-20.04
           - jobname: osx-clang
             cc: clang
             pool: macos-latest
@@ -284,7 +284,7 @@ jobs:
     if: needs.ci-config.outputs.enabled == 'yes'
     env:
       jobname: StaticAnalysis
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v2
     - run: ci/install-dependencies.sh
diff --git a/Documentation/RelNotes/2.30.9.txt b/Documentation/RelNotes/2.30.9.txt
new file mode 100644
index 0000000000..708d626ce6
--- /dev/null
+++ b/Documentation/RelNotes/2.30.9.txt
@@ -0,0 +1,43 @@
+Git v2.30.9 Release Notes
+=========================
+
+This release addresses the security issues CVE-2023-25652,
+CVE-2023-25815, and CVE-2023-29007.
+
+
+Fixes since v2.30.8
+-------------------
+
+ * CVE-2023-25652:
+
+   By feeding specially crafted input to `git apply --reject`, a
+   path outside the working tree can be overwritten with partially
+   controlled contents (corresponding to the rejected hunk(s) from
+   the given patch).
+
+ * CVE-2023-25815:
+
+   When Git is compiled with runtime prefix support and runs without
+   translated messages, it still used the gettext machinery to
+   display messages, which subsequently potentially looked for
+   translated messages in unexpected places. This allowed for
+   malicious placement of crafted messages.
+
+ * CVE-2023-29007:
+
+   When renaming or deleting a section from a configuration file,
+   certain malicious configuration values may be misinterpreted as
+   the beginning of a new configuration section, leading to arbitrary
+   configuration injection.
+
+Credit for finding CVE-2023-25652 goes to Ry0taK, and the fix was
+developed by Taylor Blau, Junio C Hamano and Johannes Schindelin,
+with the help of Linus Torvalds.
+
+Credit for finding CVE-2023-25815 goes to Maxime Escourbiac and
+Yassine BENGANA of Michelin, and the fix was developed by Johannes
+Schindelin.
+
+Credit for finding CVE-2023-29007 goes to André Baptista and Vítor Pinho
+of Ethiack, and the fix was developed by Taylor Blau, and Johannes
+Schindelin, with help from Jeff King, and Patrick Steinhardt.
diff --git a/Documentation/RelNotes/2.31.8.txt b/Documentation/RelNotes/2.31.8.txt
new file mode 100644
index 0000000000..0aa3080780
--- /dev/null
+++ b/Documentation/RelNotes/2.31.8.txt
@@ -0,0 +1,6 @@
+Git v2.31.8 Release Notes
+=========================
+
+This release merges the fixes that appear in v2.30.9 to address the
+security issues CVE-2023-25652, CVE-2023-25815, and CVE-2023-29007;
+see the release notes for that version for details.
diff --git a/Documentation/RelNotes/2.32.7.txt b/Documentation/RelNotes/2.32.7.txt
new file mode 100644
index 0000000000..7bb35388b5
--- /dev/null
+++ b/Documentation/RelNotes/2.32.7.txt
@@ -0,0 +1,7 @@
+Git v2.32.7 Release Notes
+=========================
+
+This release merges the fixes that appear in v2.30.9 and v2.31.8 to
+address the security issues CVE-2023-25652, CVE-2023-25815, and
+CVE-2023-29007; see the release notes for these versions for
+details.
diff --git a/Documentation/RelNotes/2.33.8.txt b/Documentation/RelNotes/2.33.8.txt
new file mode 100644
index 0000000000..d8cf4c7f3a
--- /dev/null
+++ b/Documentation/RelNotes/2.33.8.txt
@@ -0,0 +1,7 @@
+Git v2.33.8 Release Notes
+=========================
+
+This release merges the fixes that appear in v2.30.9, v2.31.8 and
+v2.32.7 to address the security issues CVE-2023-25652,
+CVE-2023-25815, and CVE-2023-29007; see the release notes for these
+versions for details.
diff --git a/apply.c b/apply.c
index 98505d1bfe..81ac28fd74 100644
--- a/apply.c
+++ b/apply.c
@@ -4582,7 +4582,7 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 	FILE *rej;
 	char namebuf[PATH_MAX];
 	struct fragment *frag;
-	int cnt = 0;
+	int fd, cnt = 0;
 	struct strbuf sb = STRBUF_INIT;
 
 	for (cnt = 0, frag = patch->fragments; frag; frag = frag->next) {
@@ -4622,7 +4622,17 @@ static int write_out_one_reject(struct apply_state *state, struct patch *patch)
 	memcpy(namebuf, patch->new_name, cnt);
 	memcpy(namebuf + cnt, ".rej", 5);
 
-	rej = fopen(namebuf, "w");
+	fd = open(namebuf, O_CREAT | O_EXCL | O_WRONLY, 0666);
+	if (fd < 0) {
+		if (errno != EEXIST)
+			return error_errno(_("cannot open %s"), namebuf);
+		if (unlink(namebuf))
+			return error_errno(_("cannot unlink '%s'"), namebuf);
+		fd = open(namebuf, O_CREAT | O_EXCL | O_WRONLY, 0666);
+		if (fd < 0)
+			return error_errno(_("cannot open %s"), namebuf);
+	}
+	rej = fdopen(fd, "w");
 	if (!rej)
 		return error_errno(_("cannot open %s"), namebuf);
 
diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
index 1d0e48f451..e6e283e323 100755
--- a/ci/install-dependencies.sh
+++ b/ci/install-dependencies.sh
@@ -5,7 +5,7 @@
 
 . ${0%/*}/lib.sh
 
-P4WHENCE=http://filehost.perforce.com/perforce/r$LINUX_P4_VERSION
+P4WHENCE=https://cdist2.perforce.com/perforce/r21.2
 LFSWHENCE=https://github.com/github/git-lfs/releases/download/v$LINUX_GIT_LFS_VERSION
 UBUNTU_COMMON_PKGS="make libssl-dev libcurl4-openssl-dev libexpat-dev
  tcl tk gettext zlib1g-dev perl-modules liberror-perl libauthen-sasl-perl
@@ -16,7 +16,7 @@ linux-clang|linux-gcc|linux-leaks)
 	sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
 	sudo apt-get -q update
 	sudo apt-get -q -y install language-pack-is libsvn-perl apache2 \
-		$UBUNTU_COMMON_PKGS
+		$UBUNTU_COMMON_PKGS $PYTHON_PACKAGE
 	case "$jobname" in
 	linux-gcc)
 		sudo apt-get -q -y install gcc-8
@@ -44,13 +44,15 @@ osx-clang|osx-gcc)
 	test -z "$BREW_INSTALL_PACKAGES" ||
 	brew install $BREW_INSTALL_PACKAGES
 	brew link --force gettext
-	brew install --cask --no-quarantine perforce || {
-		# Update the definitions and try again
-		cask_repo="$(brew --repository)"/Library/Taps/homebrew/homebrew-cask &&
-		git -C "$cask_repo" pull --no-stat --ff-only &&
-		brew install --cask --no-quarantine perforce
-	} ||
-	brew install homebrew/cask/perforce
+	mkdir -p $HOME/bin
+	(
+		cd $HOME/bin
+		wget -q "$P4WHENCE/bin.macosx1015x86_64/helix-core-server.tgz" &&
+		tar -xf helix-core-server.tgz &&
+		sudo xattr -d com.apple.quarantine p4 p4d 2>/dev/null || true
+	)
+	PATH="$PATH:${HOME}/bin"
+	export PATH
 	case "$jobname" in
 	osx-gcc)
 		brew install gcc@9
@@ -86,9 +88,9 @@ esac
 if type p4d >/dev/null && type p4 >/dev/null
 then
 	echo "$(tput setaf 6)Perforce Server Version$(tput sgr0)"
-	p4d -V | grep Rev.
+	p4d -V
 	echo "$(tput setaf 6)Perforce Client Version$(tput sgr0)"
-	p4 -V | grep Rev.
+	p4 -V
 fi
 if type git-lfs >/dev/null
 then
diff --git a/ci/lib.sh b/ci/lib.sh
index 82cb17f8ee..bbc19028d8 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -184,13 +184,13 @@ export SKIP_DASHED_BUILT_INS=YesPlease
 
 case "$jobname" in
 linux-clang|linux-gcc|linux-leaks)
+	PYTHON_PACKAGE=python2
 	if [ "$jobname" = linux-gcc ]
 	then
 		export CC=gcc-8
-		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/python3"
-	else
-		MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/python2"
+		PYTHON_PACKAGE=python3
 	fi
+	MAKEFLAGS="$MAKEFLAGS PYTHON_PATH=/usr/bin/$PYTHON_PACKAGE"
 
 	export GIT_TEST_HTTPD=true
 
@@ -199,7 +199,6 @@ linux-clang|linux-gcc|linux-leaks)
 	# were recorded in the Homebrew database upon creating the OS X
 	# image.
 	# Keep that in mind when you encounter a broken OS X build!
-	export LINUX_P4_VERSION="16.2"
 	export LINUX_GIT_LFS_VERSION="1.5.2"
 
 	P4_PATH="$HOME/custom/p4"
diff --git a/compat/nedmalloc/nedmalloc.c b/compat/nedmalloc/nedmalloc.c
index edb438a777..2c0ace7075 100644
--- a/compat/nedmalloc/nedmalloc.c
+++ b/compat/nedmalloc/nedmalloc.c
@@ -323,7 +323,6 @@ static NOINLINE void RemoveCacheEntries(nedpool *p, threadcache *tc, unsigned in
 }
 static void DestroyCaches(nedpool *p) THROWSPEC
 {
-	if(p->caches)
 	{
 		threadcache *tc;
 		int n;
diff --git a/compat/win32/syslog.c b/compat/win32/syslog.c
index 161978d720..1f8d8934cc 100644
--- a/compat/win32/syslog.c
+++ b/compat/win32/syslog.c
@@ -43,6 +43,7 @@ void syslog(int priority, const char *fmt, ...)
 	va_end(ap);
 
 	while ((pos = strstr(str, "%1")) != NULL) {
+		size_t offset = pos - str;
 		char *oldstr = str;
 		str = realloc(str, st_add(++str_len, 1));
 		if (!str) {
@@ -50,6 +51,7 @@ void syslog(int priority, const char *fmt, ...)
 			warning_errno("realloc failed");
 			return;
 		}
+		pos = str + offset;
 		memmove(pos + 2, pos + 1, strlen(pos));
 		pos[1] = ' ';
 	}
diff --git a/config.c b/config.c
index c5873f3a70..2317a76696 100644
--- a/config.c
+++ b/config.c
@@ -3188,9 +3188,10 @@ void git_config_set_multivar(const char *key, const char *value,
 					flags);
 }
 
-static int section_name_match (const char *buf, const char *name)
+static size_t section_name_match (const char *buf, const char *name)
 {
-	int i = 0, j = 0, dot = 0;
+	size_t i = 0, j = 0;
+	int dot = 0;
 	if (buf[i] != '[')
 		return 0;
 	for (i = 1; buf[i] && buf[i] != ']'; i++) {
@@ -3243,6 +3244,8 @@ static int section_name_is_ok(const char *name)
 	return 1;
 }
 
+#define GIT_CONFIG_MAX_LINE_LEN (512 * 1024)
+
 /* if new_name == NULL, the section is removed instead */
 static int git_config_copy_or_rename_section_in_file(const char *config_filename,
 				      const char *old_name,
@@ -3252,11 +3255,12 @@ static int git_config_copy_or_rename_section_in_file(const char *config_filename
 	char *filename_buf = NULL;
 	struct lock_file lock = LOCK_INIT;
 	int out_fd;
-	char buf[1024];
+	struct strbuf buf = STRBUF_INIT;
 	FILE *config_file = NULL;
 	struct stat st;
 	struct strbuf copystr = STRBUF_INIT;
 	struct config_store_data store;
+	uint32_t line_nr = 0;
 
 	memset(&store, 0, sizeof(store));
 
@@ -3293,16 +3297,25 @@ static int git_config_copy_or_rename_section_in_file(const char *config_filename
 		goto out;
 	}
 
-	while (fgets(buf, sizeof(buf), config_file)) {
-		unsigned i;
-		int length;
+	while (!strbuf_getwholeline(&buf, config_file, '\n')) {
+		size_t i, length;
 		int is_section = 0;
-		char *output = buf;
-		for (i = 0; buf[i] && isspace(buf[i]); i++)
+		char *output = buf.buf;
+
+		line_nr++;
+
+		if (buf.len >= GIT_CONFIG_MAX_LINE_LEN) {
+			ret = error(_("refusing to work with overly long line "
+				      "in '%s' on line %"PRIuMAX),
+				    config_filename, (uintmax_t)line_nr);
+			goto out;
+		}
+
+		for (i = 0; buf.buf[i] && isspace(buf.buf[i]); i++)
 			; /* do nothing */
-		if (buf[i] == '[') {
+		if (buf.buf[i] == '[') {
 			/* it's a section */
-			int offset;
+			size_t offset;
 			is_section = 1;
 
 			/*
@@ -3319,7 +3332,7 @@ static int git_config_copy_or_rename_section_in_file(const char *config_filename
 				strbuf_reset(&copystr);
 			}
 
-			offset = section_name_match(&buf[i], old_name);
+			offset = section_name_match(&buf.buf[i], old_name);
 			if (offset > 0) {
 				ret++;
 				if (new_name == NULL) {
@@ -3394,6 +3407,7 @@ out:
 out_no_rollback:
 	free(filename_buf);
 	config_store_data_clear(&store);
+	strbuf_release(&buf);
 	return ret;
 }
 
diff --git a/dir.c b/dir.c
index 5aa6fbad0b..ea78f60623 100644
--- a/dir.c
+++ b/dir.c
@@ -3076,6 +3076,15 @@ char *git_url_basename(const char *repo, int is_bundle, int is_bare)
 			end--;
 	}
 
+	/*
+	 * It should not be possible to overflow `ptrdiff_t` by passing in an
+	 * insanely long URL, but GCC does not know that and will complain
+	 * without this check.
+	 */
+	if (end - start < 0)
+		die(_("No directory name could be guessed.\n"
+		      "Please specify a directory on the command line"));
+
 	/*
 	 * Strip trailing port number if we've got only a
 	 * hostname (that is, there is no dir separator but a
diff --git a/gettext.c b/gettext.c
index bb5ba1fe7c..7fff88c8da 100644
--- a/gettext.c
+++ b/gettext.c
@@ -102,6 +102,8 @@ static void init_gettext_charset(const char *domain)
 		setlocale(LC_CTYPE, "C");
 }
 
+int git_gettext_enabled = 0;
+
 void git_setup_gettext(void)
 {
 	const char *podir = getenv(GIT_TEXT_DOMAIN_DIR_ENVIRONMENT);
@@ -121,6 +123,8 @@ void git_setup_gettext(void)
 	init_gettext_charset("git");
 	textdomain("git");
 
+	git_gettext_enabled = 1;
+
 	free(p);
 }
 
diff --git a/gettext.h b/gettext.h
index d209911ebb..484cafa562 100644
--- a/gettext.h
+++ b/gettext.h
@@ -29,9 +29,11 @@
 #define FORMAT_PRESERVING(n) __attribute__((format_arg(n)))
 
 #ifndef NO_GETTEXT
+extern int git_gettext_enabled;
 void git_setup_gettext(void);
 int gettext_width(const char *s);
 #else
+#define git_gettext_enabled (0)
 static inline void git_setup_gettext(void)
 {
 }
@@ -45,12 +47,16 @@ static inline FORMAT_PRESERVING(1) const char *_(const char *msgid)
 {
 	if (!*msgid)
 		return "";
+	if (!git_gettext_enabled)
+		return msgid;
 	return gettext(msgid);
 }
 
 static inline FORMAT_PRESERVING(1) FORMAT_PRESERVING(2)
 const char *Q_(const char *msgid, const char *plu, unsigned long n)
 {
+	if (!git_gettext_enabled)
+		return n == 1 ? msgid : plu;
 	return ngettext(msgid, plu, n);
 }
 
diff --git a/http.c b/http.c
index 5c2fcfa840..7247234591 100644
--- a/http.c
+++ b/http.c
@@ -1398,6 +1398,32 @@ void run_active_slot(struct active_request_slot *slot)
 			select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
 		}
 	}
+
+	/*
+	 * The value of slot->finished we set before the loop was used
+	 * to set our "finished" variable when our request completed.
+	 *
+	 * 1. The slot may not have been reused for another requst
+	 *    yet, in which case it still has &finished.
+	 *
+	 * 2. The slot may already be in-use to serve another request,
+	 *    which can further be divided into two cases:
+	 *
+	 * (a) If call run_active_slot() hasn't been called for that
+	 *     other request, slot->finished would have been cleared
+	 *     by get_active_slot() and has NULL.
+	 *
+	 * (b) If the request did call run_active_slot(), then the
+	 *     call would have updated slot->finished at the beginning
+	 *     of this function, and with the clearing of the member
+	 *     below, we would find that slot->finished is now NULL.
+	 *
+	 * In all cases, slot->finished has no useful information to
+	 * anybody at this point.  Some compilers warn us for
+	 * attempting to smuggle a pointer that is about to become
+	 * invalid, i.e. &finished.  We clear it here to assure them.
+	 */
+	slot->finished = NULL;
 }
 
 static void release_active_slot(struct active_request_slot *slot)
diff --git a/t/t0033-safe-directory.sh b/t/t0033-safe-directory.sh
index 239d93f4d2..22ae88398c 100755
--- a/t/t0033-safe-directory.sh
+++ b/t/t0033-safe-directory.sh
@@ -9,7 +9,7 @@ export GIT_TEST_ASSUME_DIFFERENT_OWNER
 
 expect_rejected_dir () {
 	test_must_fail git status 2>err &&
-	grep "safe.directory" err
+	grep "dubious ownership" err
 }
 
 test_expect_success 'safe.directory is not set' '
diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 9ff46f3b04..b496ba057f 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -616,6 +616,36 @@ test_expect_success 'renaming to bogus section is rejected' '
 	test_must_fail git config --rename-section branch.zwei "bogus name"
 '
 
+test_expect_success 'renaming a section with a long line' '
+	{
+		printf "[b]\\n" &&
+		printf "  c = d %1024s [a] e = f\\n" " " &&
+		printf "[a] g = h\\n"
+	} >y &&
+	git config -f y --rename-section a xyz &&
+	test_must_fail git config -f y b.e
+'
+
+test_expect_success 'renaming an embedded section with a long line' '
+	{
+		printf "[b]\\n" &&
+		printf "  c = d %1024s [a] [foo] e = f\\n" " " &&
+		printf "[a] g = h\\n"
+	} >y &&
+	git config -f y --rename-section a xyz &&
+	test_must_fail git config -f y foo.e
+'
+
+test_expect_success 'renaming a section with an overly-long line' '
+	{
+		printf "[b]\\n" &&
+		printf "  c = d %525000s e" " " &&
+		printf "[a] g = h\\n"
+	} >y &&
+	test_must_fail git config -f y --rename-section a xyz 2>err &&
+	grep "refusing to work with overly long line in .y. on line 2" err
+'
+
 cat >> .git/config << EOF
   [branch "zwei"] a = 1 [branch "vier"]
 EOF
diff --git a/t/t4115-apply-symlink.sh b/t/t4115-apply-symlink.sh
index 1acb7b2582..2b034ff771 100755
--- a/t/t4115-apply-symlink.sh
+++ b/t/t4115-apply-symlink.sh
@@ -125,4 +125,19 @@ test_expect_success SYMLINKS 'symlink escape when deleting file' '
 	test_path_is_file .git/delete-me
 '
 
+test_expect_success SYMLINKS '--reject removes .rej symlink if it exists' '
+	test_when_finished "git reset --hard && git clean -dfx" &&
+
+	test_commit file &&
+	echo modified >file.t &&
+	git diff -- file.t >patch &&
+	echo modified-again >file.t &&
+
+	ln -s foo file.t.rej &&
+	test_must_fail git apply patch --reject 2>err &&
+	test_i18ngrep "Rejected hunk" err &&
+	test_path_is_missing foo &&
+	test_path_is_file file.t.rej
+'
+
 test_done