package/busybox: fix pending CVEs

This commit adds patches, which were all backported from upstream, or
submitted upstream, and that fix various CVEs. To facilitate the
backporting work, we took the backports from openembedded-core.

CVE-2021-42380: this one is not marked by NVD as affecting 1.36.1, but
its fix was merged after 1.36.1, so it seems like the NVD data is
incorrect. Therefore, no need for a BUSYBOX_IGNORE_CVES entry. Patch
is upstream, backport taken from openembedded-core.

CVE-2023-42363, CVE-2023-42364, CVE-2023-42365: patches are upstream,
backports taken from openembedded-core.

CVE-2023-42366: patch has been submitted upstream but not merged,
patch taken from openembedded-core.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/busybox/0012-awk-fix-use-after-free-CVE-2023-42363.patch

@@ -0,0 +1,70 @@
+From 20a91edce02adc258038a2e9bf5bda0fe27a5050 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Mon, 20 May 2024 17:55:28 +0200
+Subject: [PATCH] awk: fix use after free (CVE-2023-42363)
+
+function                                             old     new   delta
+evaluate                                            3377    3385      +8
+
+Fixes https://bugs.busybox.net/show_bug.cgi?id=15865
+
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+
+CVE: CVE-2023-42363
+Upstream-Status: Backport [https://git.busybox.net/busybox/commit/?id=fb08d43d44d1fea1f741fafb9aa7e1958a5f69aa]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+[Thomas: taken from https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox/CVE-2023-42363.patch?id=e0ff4813b1cf4df0d851c857d57fb88d7db51bdd]
+Upstream: https://git.busybox.net/busybox/commit/?id=fb08d43d44d1fea1f741fafb9aa7e1958a5f69aa
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ editors/awk.c | 21 +++++++++++++--------
+ 1 file changed, 13 insertions(+), 8 deletions(-)
+
+diff --git a/editors/awk.c b/editors/awk.c
+index 2af823808..d45724d59 100644
+--- a/editors/awk.c
++++ b/editors/awk.c
+@@ -2910,19 +2910,14 @@ static var *evaluate(node *op, var *res)
+ 				/* yes, remember where Fields[] is */
+ 				old_Fields_ptr = Fields;
+ 			}
+-			if (opinfo & OF_STR1) {
+-				L.s = getvar_s(L.v);
+-				debug_printf_eval("L.s:'%s'\n", L.s);
+-			}
+ 			if (opinfo & OF_NUM1) {
+ 				L_d = getvar_i(L.v);
+ 				debug_printf_eval("L_d:%f\n", L_d);
+ 			}
+ 		}
+-		/* NB: Must get string/numeric values of L (done above)
+-		 * _before_ evaluate()'ing R.v: if both L and R are $NNNs,
+-		 * and right one is large, then L.v points to Fields[NNN1],
+-		 * second evaluate() reallocates and moves (!) Fields[],
++		/* NB: if both L and R are $NNNs, and right one is large,
++		 * then at this pint L.v points to Fields[NNN1], second
++		 * evaluate() below reallocates and moves (!) Fields[],
+ 		 * R.v points to Fields[NNN2] but L.v now points to freed mem!
+ 		 * (Seen trying to evaluate "$444 $44444")
+ 		 */
+@@ -2942,6 +2937,16 @@ static var *evaluate(node *op, var *res)
+ 				debug_printf_eval("R.s:'%s'\n", R.s);
+ 			}
+ 		}
++		/* Get L.s _after_ R.v is evaluated: it may have realloc'd L.v
++		 * so we must get the string after "old_Fields_ptr" correction
++		 * above. Testcase: x = (v = "abc", gsub("b", "X", v));
++		 */
++		if (opinfo & OF_RES1) {
++			if (opinfo & OF_STR1) {
++				L.s = getvar_s(L.v);
++				debug_printf_eval("L.s:'%s'\n", L.s);
++			}
++		}
+ 
+ 		debug_printf_eval("switch(0x%x)\n", XC(opinfo & OPCLSMASK));
+ 		switch (XC(opinfo & OPCLSMASK)) {
+-- 
+2.47.1
+

package/busybox/0013-awk-fix-precedence-of-relative-to.patch

@@ -0,0 +1,203 @@
+From 47ff44735c0cd05efd899fb3486aca77e65fbe15 Mon Sep 17 00:00:00 2001
+From: Denys Vlasenko <vda.linux@googlemail.com>
+Date: Tue, 30 May 2023 16:42:18 +0200
+Subject: [PATCH] awk: fix precedence of = relative to ==
+
+Discovered while adding code to disallow assignments to non-lvalues
+
+function                                             old     new   delta
+parse_expr                                           936     991     +55
+.rodata                                           105243  105247      +4
+------------------------------------------------------------------------------
+(add/remove: 0/0 grow/shrink: 2/0 up/down: 59/0)               Total: 59 bytes
+
+CVE: CVE-2023-42364 CVE-2023-42365
+
+Upstream-Status: Backport [https://git.busybox.net/busybox/commit/?id=0256e00a9d077588bd3a39f5a1ef7e2eaa2911e4]
+Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
+(cherry picked from commit 0256e00a9d077588bd3a39f5a1ef7e2eaa2911e4)
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+[Thomas: taken from https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox/0001-awk-fix-precedence-of-relative-to.patch?id=e0ff4813b1cf4df0d851c857d57fb88d7db51bdd]
+Upstream: https://git.busybox.net/busybox/commit/?id=0256e00a9d077588bd3a39f5a1ef7e2eaa2911e4
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ editors/awk.c       | 66 ++++++++++++++++++++++++++++++---------------
+ testsuite/awk.tests |  5 ++++
+ 2 files changed, 50 insertions(+), 21 deletions(-)
+
+diff --git a/editors/awk.c b/editors/awk.c
+index d45724d59..5962c3f6a 100644
+--- a/editors/awk.c
++++ b/editors/awk.c
+@@ -337,7 +337,9 @@ static void debug_parse_print_tc(uint32_t n)
+ #undef P
+ #undef PRIMASK
+ #undef PRIMASK2
+-#define P(x)      (x << 24)
++/* Smaller 'x' means _higher_ operator precedence */
++#define PRECEDENCE(x) (x << 24)
++#define P(x)      PRECEDENCE(x)
+ #define PRIMASK   0x7F000000
+ #define PRIMASK2  0x7E000000
+ 
+@@ -360,7 +362,7 @@ enum {
+ 	OC_MOVE = 0x1f00,       OC_PGETLINE = 0x2000,   OC_REGEXP = 0x2100,
+ 	OC_REPLACE = 0x2200,    OC_RETURN = 0x2300,     OC_SPRINTF = 0x2400,
+ 	OC_TERNARY = 0x2500,    OC_UNARY = 0x2600,      OC_VAR = 0x2700,
+-	OC_DONE = 0x2800,
++	OC_CONST = 0x2800,      OC_DONE = 0x2900,
+ 
+ 	ST_IF = 0x3000,         ST_DO = 0x3100,         ST_FOR = 0x3200,
+ 	ST_WHILE = 0x3300
+@@ -440,9 +442,9 @@ static const uint32_t tokeninfo[] ALIGN4 = {
+ #define TI_PREINC (OC_UNARY|xV|P(9)|'P')
+ #define TI_PREDEC (OC_UNARY|xV|P(9)|'M')
+ 	TI_PREINC,               TI_PREDEC,               OC_FIELD|xV|P(5),
+-	OC_COMPARE|VV|P(39)|5,   OC_MOVE|VV|P(74),        OC_REPLACE|NV|P(74)|'+', OC_REPLACE|NV|P(74)|'-',
+-	OC_REPLACE|NV|P(74)|'*', OC_REPLACE|NV|P(74)|'/', OC_REPLACE|NV|P(74)|'%', OC_REPLACE|NV|P(74)|'&',
+-	OC_BINARY|NV|P(29)|'+',  OC_BINARY|NV|P(29)|'-',  OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&',
++	OC_COMPARE|VV|P(39)|5,   OC_MOVE|VV|P(38),        OC_REPLACE|NV|P(38)|'+', OC_REPLACE|NV|P(38)|'-',
++	OC_REPLACE|NV|P(38)|'*', OC_REPLACE|NV|P(38)|'/', OC_REPLACE|NV|P(38)|'%', OC_REPLACE|NV|P(38)|'&',
++	OC_BINARY|NV|P(29)|'+',  OC_BINARY|NV|P(29)|'-',  OC_REPLACE|NV|P(38)|'&', OC_BINARY|NV|P(15)|'&',
+ 	OC_BINARY|NV|P(25)|'/',  OC_BINARY|NV|P(25)|'%',  OC_BINARY|NV|P(15)|'&',  OC_BINARY|NV|P(25)|'*',
+ 	OC_COMPARE|VV|P(39)|4,   OC_COMPARE|VV|P(39)|3,   OC_COMPARE|VV|P(39)|0,   OC_COMPARE|VV|P(39)|1,
+ #define TI_LESS     (OC_COMPARE|VV|P(39)|2)
+@@ -1290,7 +1292,7 @@ static uint32_t next_token(uint32_t expected)
+ 			save_tclass = tc;
+ 			save_info = t_info;
+ 			tc = TC_BINOPX;
+-			t_info = OC_CONCAT | SS | P(35);
++			t_info = OC_CONCAT | SS | PRECEDENCE(35);
+ 		}
+ 
+ 		t_tclass = tc;
+@@ -1350,9 +1352,8 @@ static node *parse_expr(uint32_t term_tc)
+ {
+ 	node sn;
+ 	node *cn = &sn;
+-	node *vn, *glptr;
++	node *glptr;
+ 	uint32_t tc, expected_tc;
+-	var *v;
+ 
+ 	debug_printf_parse("%s() term_tc(%x):", __func__, term_tc);
+ 	debug_parse_print_tc(term_tc);
+@@ -1363,11 +1364,12 @@ static node *parse_expr(uint32_t term_tc)
+ 	expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP | term_tc;
+ 
+ 	while (!((tc = next_token(expected_tc)) & term_tc)) {
++		node *vn;
+ 
+ 		if (glptr && (t_info == TI_LESS)) {
+ 			/* input redirection (<) attached to glptr node */
+ 			debug_printf_parse("%s: input redir\n", __func__);
+-			cn = glptr->l.n = new_node(OC_CONCAT | SS | P(37));
++			cn = glptr->l.n = new_node(OC_CONCAT | SS | PRECEDENCE(37));
+ 			cn->a.n = glptr;
+ 			expected_tc = TS_OPERAND | TS_UOPPRE;
+ 			glptr = NULL;
+@@ -1379,24 +1381,42 @@ static node *parse_expr(uint32_t term_tc)
+ 			 * previous operators with higher priority */
+ 			vn = cn;
+ 			while (((t_info & PRIMASK) > (vn->a.n->info & PRIMASK2))
+-			    || ((t_info == vn->info) && t_info == TI_COLON)
++			    || (t_info == vn->info && t_info == TI_COLON)
+ 			) {
+ 				vn = vn->a.n;
+ 				if (!vn->a.n) syntax_error(EMSG_UNEXP_TOKEN);
+ 			}
+ 			if (t_info == TI_TERNARY)
+ //TODO: why?
+-				t_info += P(6);
++				t_info += PRECEDENCE(6);
+ 			cn = vn->a.n->r.n = new_node(t_info);
+ 			cn->a.n = vn->a.n;
+ 			if (tc & TS_BINOP) {
+ 				cn->l.n = vn;
+-//FIXME: this is the place to detect and reject assignments to non-lvalues.
+-//Currently we allow "assignments" to consts and temporaries, nonsense like this:
+-// awk 'BEGIN { "qwe" = 1 }'
+-// awk 'BEGIN { 7 *= 7 }'
+-// awk 'BEGIN { length("qwe") = 1 }'
+-// awk 'BEGIN { (1+1) += 3 }'
++
++				/* Prevent:
++				 * awk 'BEGIN { "qwe" = 1 }'
++				 * awk 'BEGIN { 7 *= 7 }'
++				 * awk 'BEGIN { length("qwe") = 1 }'
++				 * awk 'BEGIN { (1+1) += 3 }'
++				 */
++				/* Assignment? (including *= and friends) */
++				if (((t_info & OPCLSMASK) == OC_MOVE)
++				 || ((t_info & OPCLSMASK) == OC_REPLACE)
++				) {
++					debug_printf_parse("%s: MOVE/REPLACE vn->info:%08x\n", __func__, vn->info);
++					/* Left side is a (variable or array element)
++					 * or function argument
++					 * or $FIELD ?
++					 */
++					if ((vn->info & OPCLSMASK) != OC_VAR
++					 && (vn->info & OPCLSMASK) != OC_FNARG
++					 && (vn->info & OPCLSMASK) != OC_FIELD
++					) {
++						syntax_error(EMSG_UNEXP_TOKEN); /* no. bad */
++					}
++				}
++
+ 				expected_tc = TS_OPERAND | TS_UOPPRE | TC_REGEXP;
+ 				if (t_info == TI_PGETLINE) {
+ 					/* it's a pipe */
+@@ -1432,6 +1452,8 @@ static node *parse_expr(uint32_t term_tc)
+ 		/* one should be very careful with switch on tclass -
+ 		 * only simple tclasses should be used (TC_xyz, not TS_xyz) */
+ 		switch (tc) {
++			var *v;
++
+ 		case TC_VARIABLE:
+ 		case TC_ARRAY:
+ 			debug_printf_parse("%s: TC_VARIABLE | TC_ARRAY\n", __func__);
+@@ -1452,14 +1474,14 @@ static node *parse_expr(uint32_t term_tc)
+ 		case TC_NUMBER:
+ 		case TC_STRING:
+ 			debug_printf_parse("%s: TC_NUMBER | TC_STRING\n", __func__);
+-			cn->info = OC_VAR;
++			cn->info = OC_CONST;
+ 			v = cn->l.v = xzalloc(sizeof(var));
+-			if (tc & TC_NUMBER)
++			if (tc & TC_NUMBER) {
+ 				setvar_i(v, t_double);
+-			else {
++			 } else {
+ 				setvar_s(v, t_string);
+-				expected_tc &= ~TC_UOPPOST; /* "str"++ is not allowed */
+ 			}
++			expected_tc &= ~TC_UOPPOST; /* NUM++, "str"++ not allowed */
+ 			break;
+ 
+ 		case TC_REGEXP:
+@@ -3107,6 +3129,8 @@ static var *evaluate(node *op, var *res)
+ 
+ 		/* -- recursive node type -- */
+ 
++		case XC( OC_CONST ):
++			debug_printf_eval("CONST ");
+ 		case XC( OC_VAR ):
+ 			debug_printf_eval("VAR\n");
+ 			L.v = op->l.v;
+diff --git a/testsuite/awk.tests b/testsuite/awk.tests
+index ddc51047b..a78fdcd98 100755
+--- a/testsuite/awk.tests
++++ b/testsuite/awk.tests
+@@ -540,4 +540,9 @@ testing 'awk assign while assign' \
+ │    trim/eff : 57.02%/26, 0.00%                     │          [cpu000:100%]
+ └────────────────────────────────────────────────────┘^C"
+ 
++testing "awk = has higher precedence than == (despite what gawk manpage claims)" \
++	"awk 'BEGIN { v=1; print 2==v; print 2==v=2; print v; print v=3==3; print v}'" \
++	'0\n1\n2\n1\n3\n' \
++	'' ''
++
+ exit $FAILCOUNT
+-- 
+2.47.1
+

package/busybox/0014-awk-fix-ternary-operator-and-precedence-of.patch

@@ -0,0 +1,102 @@
+From 173164c6b2f2ad17dd14d3a43e5bff47abde7199 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Tue, 21 May 2024 14:46:08 +0200
+Subject: [PATCH] awk: fix ternary operator and precedence of =
+
+Adjust the = precedence test to match behavior of gawk, mawk and
+FreeBSD.  awk 'BEGIN {print v=3==3; print v}' should print two '1'.
+
+To fix this, and to unbreak the ternary conditional operator, we restore
+the precedence of = in the token list, but override this with a lower
+priority when the assignment is on the right side of a compare.
+
+This fixes commit 0256e00a9d07 (awk: fix precedence of = relative to ==) [1]
+
+CVE: CVE-2023-42364 CVE-2023-42365
+
+Upstream-Status: Submitted [http://lists.busybox.net/pipermail/busybox/2024-May/090766.html]
+
+[1] https://bugs.busybox.net/show_bug.cgi?id=15871#c6
+
+Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
+(cherry picked from commit 1714301c405ef03b39605c85c23f22a190cddd95)
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+[Thomas: taken from https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox/0002-awk-fix-ternary-operator-and-precedence-of.patch?id=e0ff4813b1cf4df0d851c857d57fb88d7db51bdd]
+Upstream: https://git.busybox.net/busybox/commit/?id=38335df9e9f45378c3407defd38b5b610578bdda
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ editors/awk.c       | 18 ++++++++++++++----
+ testsuite/awk.tests |  9 +++++++--
+ 2 files changed, 21 insertions(+), 6 deletions(-)
+
+diff --git a/editors/awk.c b/editors/awk.c
+index 5962c3f6a..9467f4644 100644
+--- a/editors/awk.c
++++ b/editors/awk.c
+@@ -442,9 +442,10 @@ static const uint32_t tokeninfo[] ALIGN4 = {
+ #define TI_PREINC (OC_UNARY|xV|P(9)|'P')
+ #define TI_PREDEC (OC_UNARY|xV|P(9)|'M')
+ 	TI_PREINC,               TI_PREDEC,               OC_FIELD|xV|P(5),
+-	OC_COMPARE|VV|P(39)|5,   OC_MOVE|VV|P(38),        OC_REPLACE|NV|P(38)|'+', OC_REPLACE|NV|P(38)|'-',
+-	OC_REPLACE|NV|P(38)|'*', OC_REPLACE|NV|P(38)|'/', OC_REPLACE|NV|P(38)|'%', OC_REPLACE|NV|P(38)|'&',
+-	OC_BINARY|NV|P(29)|'+',  OC_BINARY|NV|P(29)|'-',  OC_REPLACE|NV|P(38)|'&', OC_BINARY|NV|P(15)|'&',
++#define TI_ASSIGN (OC_MOVE|VV|P(74))
++	OC_COMPARE|VV|P(39)|5,   TI_ASSIGN,               OC_REPLACE|NV|P(74)|'+', OC_REPLACE|NV|P(74)|'-',
++	OC_REPLACE|NV|P(74)|'*', OC_REPLACE|NV|P(74)|'/', OC_REPLACE|NV|P(74)|'%', OC_REPLACE|NV|P(74)|'&',
++	OC_BINARY|NV|P(29)|'+',  OC_BINARY|NV|P(29)|'-',  OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&',
+ 	OC_BINARY|NV|P(25)|'/',  OC_BINARY|NV|P(25)|'%',  OC_BINARY|NV|P(15)|'&',  OC_BINARY|NV|P(25)|'*',
+ 	OC_COMPARE|VV|P(39)|4,   OC_COMPARE|VV|P(39)|3,   OC_COMPARE|VV|P(39)|0,   OC_COMPARE|VV|P(39)|1,
+ #define TI_LESS     (OC_COMPARE|VV|P(39)|2)
+@@ -1376,11 +1377,19 @@ static node *parse_expr(uint32_t term_tc)
+ 			continue;
+ 		}
+ 		if (tc & (TS_BINOP | TC_UOPPOST)) {
++			int prio;
+ 			debug_printf_parse("%s: TS_BINOP | TC_UOPPOST tc:%x\n", __func__, tc);
+ 			/* for binary and postfix-unary operators, jump back over
+ 			 * previous operators with higher priority */
+ 			vn = cn;
+-			while (((t_info & PRIMASK) > (vn->a.n->info & PRIMASK2))
++			/* Let assignment get higher priority when used on right
++			 * side in compare. i.e: 2==v=3 */
++			if (t_info == TI_ASSIGN && (vn->a.n->info & OPCLSMASK) == OC_COMPARE) {
++				prio = PRECEDENCE(38);
++			} else {
++				prio = (t_info & PRIMASK);
++			}
++			while ((prio > (vn->a.n->info & PRIMASK2))
+ 			    || (t_info == vn->info && t_info == TI_COLON)
+ 			) {
+ 				vn = vn->a.n;
+@@ -1412,6 +1421,7 @@ static node *parse_expr(uint32_t term_tc)
+ 					if ((vn->info & OPCLSMASK) != OC_VAR
+ 					 && (vn->info & OPCLSMASK) != OC_FNARG
+ 					 && (vn->info & OPCLSMASK) != OC_FIELD
++					 && (vn->info & OPCLSMASK) != OC_COMPARE
+ 					) {
+ 						syntax_error(EMSG_UNEXP_TOKEN); /* no. bad */
+ 					}
+diff --git a/testsuite/awk.tests b/testsuite/awk.tests
+index a78fdcd98..d2706dea9 100755
+--- a/testsuite/awk.tests
++++ b/testsuite/awk.tests
+@@ -540,9 +540,14 @@ testing 'awk assign while assign' \
+ │    trim/eff : 57.02%/26, 0.00%                     │          [cpu000:100%]
+ └────────────────────────────────────────────────────┘^C"
+ 
+-testing "awk = has higher precedence than == (despite what gawk manpage claims)" \
++testing "awk = has higher precedence than == on right side" \
+ 	"awk 'BEGIN { v=1; print 2==v; print 2==v=2; print v; print v=3==3; print v}'" \
+-	'0\n1\n2\n1\n3\n' \
++	'0\n1\n2\n1\n1\n' \
++	'' ''
++
++testing 'awk ternary precedence' \
++	"awk 'BEGIN { a = 0 ? \"yes\": \"no\"; print a }'" \
++	'no\n' \
+ 	'' ''
+ 
+ exit $FAILCOUNT
+-- 
+2.47.1
+

package/busybox/0015-awk.c-fix-CVE-2023-42366-bug-15874.patch

@@ -0,0 +1,43 @@
+From 54e64812090f58cffca08fcf11d2dbc471c964e1 Mon Sep 17 00:00:00 2001
+From: Valery Ushakov <uwe@stderr.spb.ru>
+Date: Wed, 24 Jan 2024 22:24:41 +0300
+Subject: [PATCH] awk.c: fix CVE-2023-42366 (bug #15874)
+
+Make sure we don't read past the end of the string in next_token()
+when backslash is the last character in an (invalid) regexp.
+a fix and issue reported in bugzilla
+
+https://bugs.busybox.net/show_bug.cgi?id=15874
+
+Upstream-Status: Submitted [http://lists.busybox.net/pipermail/busybox/2024-May/090766.html]
+
+CVE: CVE-2023-42366
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+[Thomas: https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/busybox/busybox/0001-awk.c-fix-CVE-2023-42366-bug-15874.patch?id=e0ff4813b1cf4df0d851c857d57fb88d7db51bdd]
+Upstream: http://lists.busybox.net/pipermail/busybox/2024-May/090766.html
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ editors/awk.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/editors/awk.c b/editors/awk.c
+index 9467f4644..947195333 100644
+--- a/editors/awk.c
++++ b/editors/awk.c
+@@ -1168,9 +1168,11 @@ static uint32_t next_token(uint32_t expected)
+ 					s[-1] = bb_process_escape_sequence((const char **)&pp);
+ 					if (*p == '\\')
+ 						*s++ = '\\';
+-					if (pp == p)
++					if (pp == p) {
++						if (*p == '\0')
++							syntax_error(EMSG_UNEXP_EOS);
+ 						*s++ = *p++;
+-					else
++					} else
+ 						p = pp;
+ 				}
+ 			}
+-- 
+2.47.1
+

package/busybox/busybox.mk

@@ -15,6 +15,16 @@ BUSYBOX_CPE_ID_VENDOR = busybox
 # 0004-nslookup-sanitize-all-printed-strings-with-printable.patch
 BUSYBOX_IGNORE_CVES += CVE-2022-28391
 
+# 0012-awk-fix-use-after-free-CVE-2023-42363.patch
+BUSYBOX_IGNORE_CVES += CVE-2023-42363
+
+# 0013-awk-fix-precedence-of-relative-to.patch
+# 0014-awk-fix-ternary-operator-and-precedence-of.patch
+BUSYBOX_IGNORE_CVES += CVE-2023-42364 CVE-2023-42365
+
+# 0015-awk.c-fix-CVE-2023-42366-bug-15874.patch
+BUSYBOX_IGNORE_CVES += CVE-2023-42366
+
 BUSYBOX_CFLAGS = \
 	$(TARGET_CFLAGS)