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?

> + 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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