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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-26 08:44:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-26 08:44:15 -0700 |
| commit | 813835028e9ae1f18cd11bb0ec591d0f0577d96a (patch) | |
| tree | 5c91429f5cb9f0615ca8dbf2406984583ec27deb /crypto | |
| parent | Merge tag 'for-4.18-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux (diff) | |
| parent | X.509: unpack RSA signatureValue field from BIT STRING (diff) | |
| download | linux-dev-813835028e9ae1f18cd11bb0ec591d0f0577d96a.tar.xz linux-dev-813835028e9ae1f18cd11bb0ec591d0f0577d96a.zip | |
Merge branch 'fixes-v4.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem fixes from James Morris:
- Smack: fix a regression caused by 1bbc55131e5
- X.509: fix a (usually un-seen) bug in RSA signature parsing
* 'fixes-v4.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
X.509: unpack RSA signatureValue field from BIT STRING
Smack: Mark inode instant in smack_task_to_inode
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/asymmetric_keys/x509_cert_parser.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 7d81e6bb461a..b6cabac4b62b 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -249,6 +249,15 @@ int x509_note_signature(void *context, size_t hdrlen, return -EINVAL; } + if (strcmp(ctx->cert->sig->pkey_algo, "rsa") == 0) { + /* Discard the BIT STRING metadata */ + if (vlen < 1 || *(const u8 *)value != 0) + return -EBADMSG; + + value++; + vlen--; + } + ctx->cert->raw_sig = value; ctx->cert->raw_sig_size = vlen; return 0; |