diff options
Diffstat (limited to 'debian/patches/features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch')
| -rw-r--r-- | debian/patches/features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/debian/patches/features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch b/debian/patches/features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch new file mode 100644 index 000000000..a0aea95a2 --- /dev/null +++ b/debian/patches/features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch @@ -0,0 +1,30 @@ +From: Ben Hutchings <ben@decadent.org.uk> +Date: Sun, 05 May 2019 13:45:06 +0100 +Subject: MODSIGN: Make shash allocation failure fatal + +mod_is_hash_blacklisted() currently returns 0 (suceess) if +crypto_alloc_shash() fails. This should instead be a fatal error, +so unwrap and pass up the error code. + +Signed-off-by: Ben Hutchings <ben@decadent.org.uk> +--- +Index: linux/kernel/module_signing.c +=================================================================== +--- linux.orig/kernel/module_signing.c ++++ linux/kernel/module_signing.c +@@ -51,11 +51,13 @@ static int mod_is_hash_blacklisted(const + struct shash_desc *desc; + size_t digest_size, desc_size; + u8 *digest; +- int ret = 0; ++ int ret; + + tfm = crypto_alloc_shash("sha256", 0, 0); +- if (IS_ERR(tfm)) ++ if (IS_ERR(tfm)) { ++ ret = PTR_ERR(tfm); + goto error_return; ++ } + + desc_size = crypto_shash_descsize(tfm) + sizeof(*desc); + digest_size = crypto_shash_digestsize(tfm); |