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lib: fix potential segfault in _keyslot_repair

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The value of vk may be NULL in _keyslot_repair. It will
be dereferenced in LUKS_generate_phdr. Check it to avoid
segfault.

Signed-off-by: Lixiaokeng <lixiaokeng@huawei.com>
Signed-off-by: Linfeilong <linfeilong@huawei.com>
This commit is contained in:
lixiaokeng
2020-11-09 09:34:51 +08:00
parent 941b82a8be
commit 02d13d7257
1 changed files with 2 additions and 0 deletions
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2
lib/luks1/keymanage.c
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@@ -386,6 +386,8 @@ static int _keyslot_repair(struct luks_phdr *phdr, struct crypt_device *ctx)
return -EINVAL; return -EINVAL;
vk = crypt_alloc_volume_key(phdr->keyBytes, NULL); vk = crypt_alloc_volume_key(phdr->keyBytes, NULL);
if (!vk)
return -ENOMEM;
log_verbose(ctx, _("Repairing keyslots.")); log_verbose(ctx, _("Repairing keyslots."));