diff options
| -rw-r--r-- | lib/digsig.c | 12 | ||||
| -rw-r--r-- | lib/mpi/mpicoder.c | 6 |
2 files changed, 11 insertions, 7 deletions
diff --git a/lib/digsig.c b/lib/digsig.c index 07be6c1ef4e2..a121cbc5a46b 100644 --- a/lib/digsig.c +++ b/lib/digsig.c @@ -104,16 +104,18 @@ static int digsig_verify_rsa(struct key *key, datap = pkh->mpi; endp = ukp->data + ukp->datalen; - err = -ENOMEM; - for (i = 0; i < pkh->nmpi; i++) { unsigned int remaining = endp - datap; pkey[i] = mpi_read_from_buffer(datap, &remaining); - if (!pkey[i]) + if (IS_ERR(pkey[i])) { + err = PTR_ERR(pkey[i]); goto err; + } datap += remaining; } + err = -ENOMEM; + mblen = mpi_get_nbits(pkey[0]); mlen = DIV_ROUND_UP(mblen, 8); @@ -126,8 +128,10 @@ static int digsig_verify_rsa(struct key *key, nret = siglen; in = mpi_read_from_buffer(sig, &nret); - if (!in) + if (IS_ERR(in)) { + err = PTR_ERR(in); goto err; + } res = mpi_alloc(mpi_get_nlimbs(in) * 2); if (!res) diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c index eda34aba017e..350abaf4bee7 100644 --- a/lib/mpi/mpicoder.c +++ b/lib/mpi/mpicoder.c @@ -86,12 +86,12 @@ MPI mpi_read_from_buffer(const void *xbuffer, unsigned *ret_nread) MPI val = NULL; if (*ret_nread < 2) - goto leave; + return ERR_PTR(-EINVAL); nbits = buffer[0] << 8 | buffer[1]; if (nbits > MAX_EXTERN_MPI_BITS) { pr_info("MPI: mpi too large (%u bits)\n", nbits); - goto leave; + return ERR_PTR(-EINVAL); } buffer += 2; nread = 2; @@ -100,7 +100,7 @@ MPI mpi_read_from_buffer(const void *xbuffer, unsigned *ret_nread) nlimbs = DIV_ROUND_UP(nbytes, BYTES_PER_MPI_LIMB); val = mpi_alloc(nlimbs); if (!val) - return NULL; + return ERR_PTR(-ENOMEM); i = BYTES_PER_MPI_LIMB - nbytes % BYTES_PER_MPI_LIMB; i %= BYTES_PER_MPI_LIMB; val->nbits = nbits; |