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| author | Roberto Sassu <roberto.sassu@huawei.com> | 2022-11-10 12:46:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 15:33:10 +0300 |
| commit | 02ed209aa6f1b5a58a2fef3dbf84132d0bc663c8 (patch) | |
| tree | df0ed8dec38f9e9068f362493a465e34d47a0ade /fs/reiserfs | |
| parent | 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616e (diff) | |
| download | linux-02ed209aa6f1b5a58a2fef3dbf84132d0bc663c8.tar.xz | |
reiserfs: Add missing calls to reiserfs_security_free()
commit 572302af1258459e124437b8f3369357447afac7 upstream.
Commit 57fe60df6241 ("reiserfs: add atomic addition of selinux attributes
during inode creation") defined reiserfs_security_free() to free the name
and value of a security xattr allocated by the active LSM through
security_old_inode_init_security(). However, this function is not called
in the reiserfs code.
Thus, add a call to reiserfs_security_free() whenever
reiserfs_security_init() is called, and initialize value to NULL, to avoid
to call kfree() on an uninitialized pointer.
Finally, remove the kfree() for the xattr name, as it is not allocated
anymore.
Fixes: 57fe60df6241 ("reiserfs: add atomic addition of selinux attributes during inode creation")
Cc: stable@vger.kernel.org
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Mimi Zohar <zohar@linux.ibm.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/reiserfs')
| -rw-r--r-- | fs/reiserfs/namei.c | 4 | ||||
| -rw-r--r-- | fs/reiserfs/xattr_security.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 3d7a35d6a18b..b916859992ec 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -696,6 +696,7 @@ static int reiserfs_create(struct user_namespace *mnt_userns, struct inode *dir, out_failed: reiserfs_write_unlock(dir->i_sb); + reiserfs_security_free(&security); return retval; } @@ -779,6 +780,7 @@ static int reiserfs_mknod(struct user_namespace *mnt_userns, struct inode *dir, out_failed: reiserfs_write_unlock(dir->i_sb); + reiserfs_security_free(&security); return retval; } @@ -878,6 +880,7 @@ static int reiserfs_mkdir(struct user_namespace *mnt_userns, struct inode *dir, retval = journal_end(&th); out_failed: reiserfs_write_unlock(dir->i_sb); + reiserfs_security_free(&security); return retval; } @@ -1194,6 +1197,7 @@ static int reiserfs_symlink(struct user_namespace *mnt_userns, retval = journal_end(&th); out_failed: reiserfs_write_unlock(parent_dir->i_sb); + reiserfs_security_free(&security); return retval; } diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c index 8965c8e5e172..857a65b05726 100644 --- a/fs/reiserfs/xattr_security.c +++ b/fs/reiserfs/xattr_security.c @@ -50,6 +50,7 @@ int reiserfs_security_init(struct inode *dir, struct inode *inode, int error; sec->name = NULL; + sec->value = NULL; /* Don't add selinux attributes on xattrs - they'll never get used */ if (IS_PRIVATE(dir)) @@ -95,7 +96,6 @@ int reiserfs_security_write(struct reiserfs_transaction_handle *th, void reiserfs_security_free(struct reiserfs_security_handle *sec) { - kfree(sec->name); kfree(sec->value); sec->name = NULL; sec->value = NULL; |