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| author | GUO Zihua <guozihua@huawei.com> | 2022-11-11 13:13:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 15:32:11 +0300 |
| commit | c591c48842f08d30ec6b8416757831985ed9a315 (patch) | |
| tree | f01fbffbcaeb8d9b5b1ab5ae15c99e288ce4828b | |
| parent | accc7993a780c5cd4e45051634bf66400df10f36 (diff) | |
| download | linux-c591c48842f08d30ec6b8416757831985ed9a315.tar.xz | |
integrity: Fix memory leakage in keyring allocation error path
[ Upstream commit 39419ef7af0916cc3620ecf1ed42d29659109bf3 ]
Key restriction is allocated in integrity_init_keyring(). However, if
keyring allocation failed, it is not freed, causing memory leaks.
Fixes: 2b6aa412ff23 ("KEYS: Use structure to capture key restriction function and data")
Signed-off-by: GUO Zihua <guozihua@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | security/integrity/digsig.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 8a82a6c7f48a..f2193c531f4a 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -126,6 +126,7 @@ int __init integrity_init_keyring(const unsigned int id) { struct key_restriction *restriction; key_perm_t perm; + int ret; perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ | KEY_USR_SEARCH; @@ -154,7 +155,10 @@ int __init integrity_init_keyring(const unsigned int id) perm |= KEY_USR_WRITE; out: - return __integrity_init_keyring(id, perm, restriction); + ret = __integrity_init_keyring(id, perm, restriction); + if (ret) + kfree(restriction); + return ret; } static int __init integrity_add_key(const unsigned int id, const void *data, |