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| author | Colin Ian King <colin.king@canonical.com> | 2018-05-28 01:15:02 +0300 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2018-05-31 17:13:22 +0300 |
| commit | 825b8650dc3dd064969ce343e918d0eb6bf907fb (patch) | |
| tree | 907d0015b78742a85a0ee226bd45505830faf2b5 | |
| parent | 53b626f9038ee357a2183a6994c11fd9dfb3f94d (diff) | |
| download | linux-825b8650dc3dd064969ce343e918d0eb6bf907fb.tar.xz | |
EVM: fix memory leak of temporary buffer 'temp'
The allocation of 'temp' is not kfree'd and hence there is a memory
leak on each call of evm_read_xattrs. Fix this by kfree'ing it
after copying data from it back to the user space buffer 'buf'.
Detected by CoverityScan, CID#1469386 ("Resource Leak")
Fixes: fa516b66a1bf ("EVM: Allow runtime modification of the set of verified xattrs")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| -rw-r--r-- | security/integrity/evm/evm_secfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/integrity/evm/evm_secfs.c b/security/integrity/evm/evm_secfs.c index a7a0a1acae99..fb8bc950aceb 100644 --- a/security/integrity/evm/evm_secfs.c +++ b/security/integrity/evm/evm_secfs.c @@ -158,6 +158,8 @@ static ssize_t evm_read_xattrs(struct file *filp, char __user *buf, mutex_unlock(&xattr_list_mutex); rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp)); + kfree(temp); + return rc; } |