On Fri, Mar 6, 2026 at 6:32 PM Anuj Mittal <[email protected]> wrote:
>
> On Wed, Feb 25, 2026 at 2:54 AM Ankur Tyagi via lists.openembedded.org
> <[email protected]> wrote:
> >
> > From: Ankur Tyagi <[email protected]>
> >
> > Backport changes from PR[1] mentioned in nvd[2]
> >
> > [1] https://github.com/wolfSSL/wolfssl/pull/9148
> > [2] https://nvd.nist.gov/vuln/detail/CVE-2025-13912
> >
> > Signed-off-by: Ankur Tyagi <[email protected]>
> > ---
> > .../wolfssl/files/CVE-2025-13912.patch | 439 ++++++++++++++++++
> > .../wolfssl/wolfssl_5.8.0.bb | 1 +
> > 2 files changed, 440 insertions(+)
> > create mode 100644
> > meta-networking/recipes-connectivity/wolfssl/files/CVE-2025-13912.patch
> >
> > diff --git
> > a/meta-networking/recipes-connectivity/wolfssl/files/CVE-2025-13912.patch
> > b/meta-networking/recipes-connectivity/wolfssl/files/CVE-2025-13912.patch
> > new file mode 100644
> > index 0000000000..32252058f7
> > --- /dev/null
> > +++
> > b/meta-networking/recipes-connectivity/wolfssl/files/CVE-2025-13912.patch
> > @@ -0,0 +1,439 @@
> > +From 797e0e7abf5830d515ca838201c03a47f83356b0 Mon Sep 17 00:00:00 2001
> > +From: Daniel Pouzzner <[email protected]>
> > +Date: Tue, 30 Sep 2025 20:35:52 -0500
> > +Subject: [PATCH] Merge pull request #9148 from SparkiDev/ct_volatile
> > +
> > +Mark variables as volatile
> > +
> > +CVE: CVE-2025-13912
> > +Upstream-Status: Backport
> > [https://github.com/wolfSSL/wolfssl/commit/234ba7780ad3b7c8c1509973accdc43ed6c328b3]
> > +Signed-off-by: Ankur Tyagi <[email protected]>
> > +---
> > + src/internal.c | 25 ++++++++++++---------
> > + src/tls.c | 8 +++++--
> > + wolfcrypt/src/aes.c | 4 ++--
> > + wolfcrypt/src/ecc.c | 8 +++----
> > + wolfcrypt/src/misc.c | 4 ++--
> > + wolfcrypt/src/rsa.c | 18 +++++++++------
> > + wolfcrypt/src/sp_int.c | 51 ++++++++++++++++++++++--------------------
>
> This seems to be missing a few more volatile related changes when
> compared to the patch mentioned above. Did you skip those on purpose?
Yes, those changes were not applicable for v5.8.0
> > + 7 files changed, 67 insertions(+), 51 deletions(-)
> > +
> > +diff --git a/src/internal.c b/src/internal.c
> > +index eb2f16d63..6b3a227bc 100644
> > +--- a/src/internal.c
> > ++++ b/src/internal.c
> > +@@ -20887,7 +20887,7 @@ static byte MaskPadding(const byte* data, int sz,
> > int macSz)
> > + checkSz = TLS_MAX_PAD_SZ;
> > +
> > + for (i = 0; i < checkSz; i++) {
> > +- byte mask = ctMaskLTE(i, paddingSz);
> > ++ volatile byte mask = ctMaskLTE(i, paddingSz);
> > + good |= mask & (data[sz - 1 - i] ^ paddingSz);
> > + }
> > +
> > +@@ -20907,16 +20907,21 @@ static byte MaskPadding(const byte* data, int
> > sz, int macSz)
> > + static byte MaskMac(const byte* data, int sz, int macSz, byte* expMac)
> > + {
> > + int i, j;
> > +- unsigned char mac[WC_MAX_DIGEST_SIZE];
> > +- int scanStart = sz - 1 - TLS_MAX_PAD_SZ - macSz;
> > +- int macEnd = sz - 1 - data[sz - 1];
> > +- int macStart = macEnd - macSz;
> > + int r = 0;
> > +- unsigned char started, notEnded;
> > ++ unsigned char mac[WC_MAX_DIGEST_SIZE];
> > ++ volatile int scanStart = sz - 1 - TLS_MAX_PAD_SZ - macSz;
> > ++ volatile int macEnd = sz - 1 - data[sz - 1];
> > ++ volatile int macStart = macEnd - macSz;
> > ++ volatile int maskScanStart;
> > ++ volatile int maskMacStart;
> > ++ volatile unsigned char started;
> > ++ volatile unsigned char notEnded;
> > + unsigned char good = 0;
> > +
> > +- scanStart &= ctMaskIntGTE(scanStart, 0);
> > +- macStart &= ctMaskIntGTE(macStart, 0);
> > ++ maskScanStart = ctMaskIntGTE(scanStart, 0);
> > ++ maskMacStart = ctMaskIntGTE(macStart, 0);
> > ++ scanStart &= maskScanStart;
> > ++ macStart &= maskMacStart;
> > +
> > + /* Div on Intel has different speeds depending on value.
> > + * Use a bitwise AND or mod a specific value (converted to mul). */
> > +@@ -41636,7 +41641,7 @@ static int DefTicketEncCb(WOLFSSL* ssl, byte
> > key_name[WOLFSSL_TICKET_NAME_SZ],
> > + case rsa_kea:
> > + {
> > + RsaKey* key = (RsaKey*)ssl->hsKey;
> > +- int lenErrMask;
> > ++ volatile int lenErrMask;
> > +
> > + ret = RsaDec(ssl,
> > + input + args->idx,
> > +@@ -41850,7 +41855,7 @@ static int DefTicketEncCb(WOLFSSL* ssl, byte
> > key_name[WOLFSSL_TICKET_NAME_SZ],
> > + case rsa_kea:
> > + {
> > + byte *tmpRsa;
> > +- byte mask;
> > ++ volatile byte mask;
> > +
> > + /* Add the signature length to idx */
> > + args->idx += args->length;
> > +diff --git a/src/tls.c b/src/tls.c
> > +index 6ad21c924..4f57ea938 100644
> > +--- a/src/tls.c
> > ++++ b/src/tls.c
> > +@@ -944,7 +944,10 @@ static int Hmac_UpdateFinal_CT(Hmac* hmac, byte*
> > digest, const byte* in,
> > + unsigned int k;
> > + int blockBits, blockMask;
> > + int lastBlockLen, extraLen, eocIndex;
> > +- int blocks, safeBlocks, lenBlock, eocBlock;
> > ++ int blocks;
> > ++ int safeBlocks;
> > ++ int lenBlock;
> > ++ int eocBlock;
> > + word32 maxLen;
> > + int blockSz, padSz;
> > + int ret;
> > +@@ -1054,7 +1057,8 @@ static int Hmac_UpdateFinal_CT(Hmac* hmac, byte*
> > digest, const byte* in,
> > +
> > + for (j = 0; j < blockSz; j++) {
> > + unsigned char atEoc = ctMaskEq(j, eocIndex) & isEocBlock;
> > +- unsigned char pastEoc = ctMaskGT(j, eocIndex) & isEocBlock;
> > ++ volatile unsigned char maskPastEoc = ctMaskGT(j, eocIndex);
> > ++ volatile unsigned char pastEoc = maskPastEoc & isEocBlock;
> > + unsigned char b = 0;
> > +
> > + if (k < headerSz)
> > +diff --git a/wolfcrypt/src/aes.c b/wolfcrypt/src/aes.c
> > +index 6e7f104dd..2cf7c695e 100644
> > +--- a/wolfcrypt/src/aes.c
> > ++++ b/wolfcrypt/src/aes.c
> > +@@ -6577,7 +6577,7 @@ static WC_INLINE void RIGHTSHIFTX(byte* x)
> > + {
> > + int i;
> > + int carryIn = 0;
> > +- byte borrow = (byte)((0x00U - (x[15] & 0x01U)) & 0xE1U);
> > ++ volatile byte borrow = (byte)((0x00U - (x[15] & 0x01U)) & 0xE1U);
> > +
> > + for (i = 0; i < WC_AES_BLOCK_SIZE; i++) {
> > + int carryOut = (x[i] & 0x01) << 7;
> > +@@ -9113,7 +9113,7 @@ int WARN_UNUSED_RESULT AES_GCM_decrypt_C(
> > + ALIGN16 byte scratch[WC_AES_BLOCK_SIZE];
> > + ALIGN16 byte Tprime[WC_AES_BLOCK_SIZE];
> > + ALIGN16 byte EKY0[WC_AES_BLOCK_SIZE];
> > +- sword32 res;
> > ++ volatile sword32 res;
> > +
> > + if (ivSz == GCM_NONCE_MID_SZ) {
> > + /* Counter is IV with bottom 4 bytes set to: 0x00,0x00,0x00,0x01.
> > */
> > +diff --git a/wolfcrypt/src/ecc.c b/wolfcrypt/src/ecc.c
> > +index 6d4cd4de7..1fd30cfd9 100644
> > +--- a/wolfcrypt/src/ecc.c
> > ++++ b/wolfcrypt/src/ecc.c
> > +@@ -3166,7 +3166,7 @@ static int ecc_mulmod(const mp_int* k, ecc_point* P,
> > ecc_point* Q,
> > + ecc_point** R, mp_int* a, mp_int* modulus, mp_digit mp, WC_RNG* rng)
> > + {
> > + int err = MP_OKAY;
> > +- int bytes = (mp_count_bits(modulus) + 7) / 8;
> > ++ int bytes = (mp_count_bits(modulus) + 7) >> 3;
> > + int i;
> > + int j = 1;
> > + int cnt = DIGIT_BIT;
> > +@@ -3406,7 +3406,7 @@ static int ecc_mulmod(const mp_int* k, ecc_point* P,
> > ecc_point* Q,
> > + ecc_point** R, mp_int* a, mp_int* modulus, mp_digit mp, WC_RNG* rng)
> > + {
> > + int err = MP_OKAY;
> > +- int bytes = (mp_count_bits(modulus) + 7) / 8;
> > ++ int bytes = (mp_count_bits(modulus) + 7) >> 3;
> > + int i;
> > + int j = 1;
> > + int cnt;
> > +@@ -4450,7 +4450,7 @@ int wc_ecc_get_curve_id_from_params(int fieldSize,
> > + Gx == NULL || Gy == NULL)
> > + return BAD_FUNC_ARG;
> > +
> > +- curveSz = (fieldSize + 1) / 8; /* round up */
> > ++ curveSz = (fieldSize + 1) >> 3; /* round up */
> > +
> > + for (idx = 0; ecc_sets[idx].size != 0; idx++) {
> > + if (curveSz == ecc_sets[idx].size) {
> > +@@ -11922,7 +11922,7 @@ int wc_ecc_sig_size(const ecc_key* key)
> > + keySz = key->dp->size;
> > + orderBits = wc_ecc_get_curve_order_bit_count(key->dp);
> > + if (orderBits > keySz * 8) {
> > +- keySz = (orderBits + 7) / 8;
> > ++ keySz = (orderBits + 7) >> 3;
> > + }
> > + /* maximum possible signature header size is 7 bytes */
> > + maxSigSz = (keySz * 2) + SIG_HEADER_SZ;
> > +diff --git a/wolfcrypt/src/misc.c b/wolfcrypt/src/misc.c
> > +index 98b83c7ae..496b0dbcc 100644
> > +--- a/wolfcrypt/src/misc.c
> > ++++ b/wolfcrypt/src/misc.c
> > +@@ -762,7 +762,7 @@ WC_MISC_STATIC WC_INLINE void ctMaskCopy(byte mask,
> > byte* dst, byte* src,
> > + WC_MISC_STATIC WC_INLINE word32 min(word32 a, word32 b)
> > + {
> > + #if !defined(WOLFSSL_NO_CT_OPS) && defined(WORD64_AVAILABLE)
> > +- word32 gte_mask = (word32)ctMaskWord32GTE(a, b);
> > ++ volatile word32 gte_mask = (word32)ctMaskWord32GTE(a, b);
> > + return (a & ~gte_mask) | (b & gte_mask);
> > + #else /* WOLFSSL_NO_CT_OPS */
> > + return a > b ? b : a;
> > +@@ -778,7 +778,7 @@ WC_MISC_STATIC WC_INLINE void ctMaskCopy(byte mask,
> > byte* dst, byte* src,
> > + WC_MISC_STATIC WC_INLINE word32 max(word32 a, word32 b)
> > + {
> > + #if !defined(WOLFSSL_NO_CT_OPS) && defined(WORD64_AVAILABLE)
> > +- word32 gte_mask = (word32)ctMaskWord32GTE(a, b);
> > ++ volatile word32 gte_mask = (word32)ctMaskWord32GTE(a, b);
> > + return (a & gte_mask) | (b & ~gte_mask);
> > + #else /* WOLFSSL_NO_CT_OPS */
> > + return a > b ? a : b;
> > +diff --git a/wolfcrypt/src/rsa.c b/wolfcrypt/src/rsa.c
> > +index 94d57bd8b..acd0c04c5 100644
> > +--- a/wolfcrypt/src/rsa.c
> > ++++ b/wolfcrypt/src/rsa.c
> > +@@ -1561,11 +1561,11 @@ static int RsaUnPad_OAEP(byte *pkcsBlock, unsigned
> > int pkcsBlockLen,
> > + byte* optLabel, word32 labelLen, void* heap)
> > + {
> > + word32 hLen;
> > +- int ret;
> > ++ volatile int ret;
> > + byte h[WC_MAX_DIGEST_SIZE]; /* max digest size */
> > + word32 idx;
> > + word32 i;
> > +- word32 inc;
> > ++ volatile word32 inc;
> > +
> > + #if defined(WOLFSSL_SMALL_STACK) && !defined(WOLFSSL_NO_MALLOC)
> > + byte* tmp = NULL;
> > +@@ -1850,9 +1850,11 @@ static int RsaUnPad(const byte *pkcsBlock, unsigned
> > int pkcsBlockLen,
> > + }
> > + #ifndef WOLFSSL_RSA_VERIFY_ONLY
> > + else {
> > +- unsigned int j;
> > +- word16 pastSep = 0;
> > +- byte invalid = 0;
> > ++ unsigned int j;
> > ++ volatile word16 pastSep = 0;
> > ++ volatile byte invalid = 0;
> > ++ volatile byte minPad;
> > ++ volatile int invalidMask;
> > +
> > + i = 0;
> > + /* Decrypted with private key - unpad must be constant time. */
> > +@@ -1864,7 +1866,8 @@ static int RsaUnPad(const byte *pkcsBlock, unsigned
> > int pkcsBlockLen,
> > + }
> > +
> > + /* Minimum of 11 bytes of pre-message data - including leading
> > 0x00. */
> > +- invalid |= ctMaskLT(i, RSA_MIN_PAD_SZ);
> > ++ minPad = ctMaskLT(i, RSA_MIN_PAD_SZ);
> > ++ invalid |= minPad;
> > + /* Must have seen separator. */
> > + invalid |= (byte)~pastSep;
> > + /* First byte must be 0x00. */
> > +@@ -1873,7 +1876,8 @@ static int RsaUnPad(const byte *pkcsBlock, unsigned
> > int pkcsBlockLen,
> > + invalid |= ctMaskNotEq(pkcsBlock[1], padValue);
> > +
> > + *output = (byte *)(pkcsBlock + i);
> > +- ret = ((int)-1 + (int)(invalid >> 7)) & ((int)pkcsBlockLen - i);
> > ++ invalidMask = (int)-1 + (int)(invalid >> 7);
> > ++ ret = invalidMask & ((int)pkcsBlockLen - i);
> > + }
> > + #endif
> > +
> > +diff --git a/wolfcrypt/src/sp_int.c b/wolfcrypt/src/sp_int.c
> > +index 1769840e7..0ee8aa252 100644
> > +--- a/wolfcrypt/src/sp_int.c
> > ++++ b/wolfcrypt/src/sp_int.c
> > +@@ -5502,7 +5502,7 @@ int sp_exch(sp_int* a, sp_int* b)
> > + int sp_cond_swap_ct_ex(sp_int* a, sp_int* b, int cnt, int swap, sp_int* t)
> > + {
> > + unsigned int i;
> > +- sp_int_digit mask = (sp_int_digit)0 - (sp_int_digit)swap;
> > ++ volatile sp_int_digit mask = (sp_int_digit)0 - (sp_int_digit)swap;
> > +
> > + /* XOR other fields in sp_int into temp - mask set when swapping. */
> > + t->used = (a->used ^ b->used) & (sp_size_t)mask;
> > +@@ -5772,7 +5772,7 @@ static int _sp_cmp_ct(const sp_int* a, const sp_int*
> > b, unsigned int n)
> > + {
> > + int ret = MP_EQ;
> > + int i;
> > +- int mask = -1;
> > ++ volatile int mask = -1;
> > +
> > + for (i = n - 1; i >= 0; i--) {
> > + sp_int_digit ad = a->dp[i] & ((sp_int_digit)0 - (i <
> > (int)a->used));
> > +@@ -7305,7 +7305,8 @@ static void _sp_div_2(const sp_int* a, sp_int* r)
> > +
> > + /* Shift down each word by 1 and include bottom bit of next at top. */
> > + for (i = 0; i < (int)a->used - 1; i++) {
> > +- r->dp[i] = (a->dp[i] >> 1) | (a->dp[i+1] << (SP_WORD_SIZE - 1));
> > ++ r->dp[i] = a->dp[i] >> 1;
> > ++ r->dp[i] |= a->dp[i+1] << (SP_WORD_SIZE - 1);
> > + }
> > + /* Last word only needs to be shifted down. */
> > + r->dp[i] = a->dp[i] >> 1;
> > +@@ -7385,7 +7386,7 @@ int sp_div_2_mod_ct(const sp_int* a, const sp_int*
> > m, sp_int* r)
> > + sp_int_digit t;
> > + #endif
> > + /* Mask to apply to modulus. */
> > +- sp_int_digit mask = (sp_int_digit)0 - (a->dp[0] & 1);
> > ++ volatile sp_int_digit mask = (sp_int_digit)0 - (a->dp[0] & 1);
> > + sp_size_t i;
> > +
> > + #if 0
> > +@@ -7396,7 +7397,7 @@ int sp_div_2_mod_ct(const sp_int* a, const sp_int*
> > m, sp_int* r)
> > + /* Add a to m, if a is odd, into r in constant time. */
> > + for (i = 0; i < m->used; i++) {
> > + /* Mask to apply to a - set when used value at index. */
> > +- sp_int_digit mask_a = (sp_int_digit)0 - (i < a->used);
> > ++ volatile sp_int_digit mask_a = (sp_int_digit)0 - (i <
> > a->used);
> > +
> > + #ifndef SQR_MUL_ASM
> > + /* Conditionally add modulus. */
> > +@@ -8017,7 +8018,7 @@ static void sp_clamp_ct(sp_int* a)
> > + {
> > + int i;
> > + sp_size_t used = a->used;
> > +- sp_size_t mask = (sp_size_t)-1;
> > ++ volatile sp_size_t mask = (sp_size_t)-1;
> > +
> > + for (i = (int)a->used - 1; i >= 0; i--) {
> > + #if ((SP_WORD_SIZE == 64) && \
> > +@@ -8066,9 +8067,9 @@ int sp_addmod_ct(const sp_int* a, const sp_int* b,
> > const sp_int* m, sp_int* r)
> > + sp_int_digit sh;
> > + sp_int_digit t;
> > + #endif
> > +- sp_int_digit mask;
> > +- sp_int_digit mask_a = (sp_int_digit)-1;
> > +- sp_int_digit mask_b = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask;
> > ++ volatile sp_int_digit mask_a = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask_b = (sp_int_digit)-1;
> > + sp_size_t i;
> > +
> > + /* Check result is as big as modulus. */
> > +@@ -8230,9 +8231,9 @@ static void _sp_submod_ct(const sp_int* a, const
> > sp_int* b, const sp_int* m,
> > + sp_int_digit h;
> > + sp_int_digit t;
> > + #endif
> > +- sp_int_digit mask;
> > +- sp_int_digit mask_a = (sp_int_digit)-1;
> > +- sp_int_digit mask_b = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask;
> > ++ volatile sp_int_digit mask_a = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask_b = (sp_int_digit)-1;
> > + unsigned int i;
> > +
> > + /* In constant time, subtract b from a putting result in r. */
> > +@@ -17458,7 +17459,7 @@ static int _sp_mont_red(sp_int* a, const sp_int*
> > m, sp_int_digit mp, int ct)
> > + /* 1. mask = (1 << (NumBits(m) % WORD_SIZE)) - 1
> > + * Mask when last digit of modulus doesn't have highest bit
> > set.
> > + */
> > +- sp_int_digit mask = (sp_int_digit)
> > ++ volatile sp_int_digit mask = (sp_int_digit)
> > + (((sp_int_digit)1 << (bits & (SP_WORD_SIZE - 1))) - 1);
> > + /* Overflow. */
> > + sp_int_word o = 0;
> > +@@ -17539,7 +17540,7 @@ static int _sp_mont_red(sp_int* a, const sp_int*
> > m, sp_int_digit mp, int ct)
> > + int bits;
> > + sp_int_digit mu;
> > + sp_int_digit o;
> > +- sp_int_digit mask;
> > ++ volatile sp_int_digit mask;
> > +
> > + #if 0
> > + sp_print(a, "a");
> > +@@ -18041,7 +18042,7 @@ int sp_unsigned_bin_size(const sp_int* a)
> > + int cnt = 0;
> > +
> > + if (a != NULL) {
> > +- cnt = (sp_count_bits(a) + 7) / 8;
> > ++ cnt = (sp_count_bits(a) + 7) >> 3;
> > + }
> > +
> > + return cnt;
> > +@@ -18265,20 +18266,22 @@ int sp_to_unsigned_bin_len_ct(const sp_int* a,
> > byte* out, int outSz)
> > + /* Start at the end of the buffer - least significant byte. */
> > + int j;
> > + unsigned int i;
> > +- sp_int_digit mask = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask = (sp_int_digit)-1;
> > + sp_int_digit d;
> > +
> > + /* Put each digit in. */
> > + i = 0;
> > + for (j = outSz - 1; j >= 0; ) {
> > + unsigned int b;
> > ++ volatile unsigned int notFull = (i < (unsigned int)a->used -
> > 1);
> > ++
> > + d = a->dp[i];
> > + /* Place each byte of a digit into the buffer. */
> > + for (b = 0; (j >= 0) && (b < SP_WORD_SIZEOF); b++) {
> > + out[j--] = (byte)(d & mask);
> > + d >>= 8;
> > + }
> > +- mask &= (sp_int_digit)0 - (i < (unsigned int)a->used - 1);
> > ++ mask &= (sp_int_digit)0 - notFull;
> > + i += (unsigned int)(1 & mask);
> > + }
> > + }
> > +@@ -18289,7 +18292,7 @@ int sp_to_unsigned_bin_len_ct(const sp_int* a,
> > byte* out, int outSz)
> > + if (err == MP_OKAY) {
> > + unsigned int i;
> > + int j;
> > +- sp_int_digit mask = (sp_int_digit)-1;
> > ++ volatile sp_int_digit mask = (sp_int_digit)-1;
> > +
> > + i = 0;
> > + for (j = outSz - 1; j >= 0; j--) {
> > +@@ -18360,11 +18363,12 @@ static int _sp_read_radix_16(sp_int* a, const
> > char* in)
> > + /* Step through string a character at a time starting at end - least
> > + * significant byte. */
> > + for (i = (int)(XSTRLEN(in) - 1); i >= 0; i--) {
> > ++ volatile char c = in[i];
> > + /* Convert character from hex. */
> > +- int ch = (int)HexCharToByte(in[i]);
> > ++ int ch = (int)HexCharToByte(c);
> > + /* Check for invalid character. */
> > + if (ch < 0) {
> > +- if (!eol_done && CharIsWhiteSpace(in[i]))
> > ++ if (!eol_done && CharIsWhiteSpace(c))
> > + continue;
> > + err = MP_VAL;
> > + break;
> > +@@ -18424,7 +18428,6 @@ static int _sp_read_radix_10(sp_int* a, const
> > char* in)
> > + {
> > + int err = MP_OKAY;
> > + int i;
> > +- char ch;
> > +
> > + /* Start with a being zero. */
> > + _sp_zero(a);
> > +@@ -18432,7 +18435,7 @@ static int _sp_read_radix_10(sp_int* a, const
> > char* in)
> > + /* Process all characters. */
> > + for (i = 0; in[i] != '\0'; i++) {
> > + /* Get character. */
> > +- ch = in[i];
> > ++ volatile char ch = in[i];
> > + /* Check character is valid. */
> > + if ((ch >= '0') && (ch <= '9')) {
> > + /* Assume '0'..'9' are continuous values as characters. */
> > +@@ -18794,7 +18797,7 @@ int sp_radix_size(const sp_int* a, int radix, int*
> > size)
> > + }
> > + else {
> > + /* Count of nibbles. */
> > +- int cnt = (sp_count_bits(a) + 3) / 4;
> > ++ int cnt = (sp_count_bits(a) + 3) >> 2;
> > + #ifndef WC_DISABLE_RADIX_ZERO_PAD
> > + /* Must have even number of nibbles to have complete bytes. */
> > + if (cnt & 1) {
> > +@@ -19404,7 +19407,7 @@ static int _sp_prime_random_trials(const sp_int*
> > a, int trials, int* result,
> > + {
> > + int err = MP_OKAY;
> > + int bits = sp_count_bits(a);
> > +- word32 baseSz = ((word32)bits + 7) / 8;
> > ++ word32 baseSz = ((word32)bits + 7) >> 3;
> > + DECL_SP_INT_ARRAY(ds, a->used + 1, 2);
> > + DECL_SP_INT_ARRAY(d, a->used * 2 + 1, 2);
> > +
> > diff --git a/meta-networking/recipes-connectivity/wolfssl/wolfssl_5.8.0.bb
> > b/meta-networking/recipes-connectivity/wolfssl/wolfssl_5.8.0.bb
> > index af591cfd7a..9cd7c07ad2 100644
> > --- a/meta-networking/recipes-connectivity/wolfssl/wolfssl_5.8.0.bb
> > +++ b/meta-networking/recipes-connectivity/wolfssl/wolfssl_5.8.0.bb
> > @@ -16,6 +16,7 @@ SRC_URI = " \
> > git://github.com/wolfSSL/wolfssl.git;protocol=https;branch=master \
> > file://0001-wolfssl-wolfcrypt-logging.h-and-wolfcrypt-src-loggin.patch
> > \
> > file://run-ptest \
> > + file://CVE-2025-13912.patch \
> > "
> >
> > SRCREV = "b077c81eb635392e694ccedbab8b644297ec0285"
> >
> >
> >
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