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authorLinus Torvalds <torvalds@linux-foundation.org>2022-12-13 20:47:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-12-13 20:47:48 +0300
commitc76ff350bd57682ae12bea6383dd8baf4824ac96 (patch)
tree35b5e26c81e0ea1bed8c68696c5878c353923cb6 /fs/reiserfs
parent57888f7b952d3f2696f82a701f1b3d9de7e346d3 (diff)
parent577cc1434e4cc1342c3df6d6a3c85136ab335c81 (diff)
downloadlinux-c76ff350bd57682ae12bea6383dd8baf4824ac96.tar.xz
Merge tag 'lsm-pr-20221212' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore: - Improve the error handling in the device cgroup such that memory allocation failures when updating the access policy do not potentially alter the policy. - Some minor fixes to reiserfs to ensure that it properly releases LSM-related xattr values. - Update the security_socket_getpeersec_stream() LSM hook to take sockptr_t values. Previously the net/BPF folks updated the getsockopt code in the network stack to leverage the sockptr_t type to make it easier to pass both kernel and __user pointers, but unfortunately when they did so they didn't convert the LSM hook. While there was/is no immediate risk by not converting the LSM hook, it seems like this is a mistake waiting to happen so this patch proactively does the LSM hook conversion. - Convert vfs_getxattr_alloc() to return an int instead of a ssize_t and cleanup the callers. Internally the function was never going to return anything larger than an int and the callers were doing some very odd things casting the return value; this patch fixes all that and helps bring a bit of sanity to vfs_getxattr_alloc() and its callers. - More verbose, and helpful, LSM debug output when the system is booted with "lsm.debug" on the command line. There are examples in the commit description, but the quick summary is that this patch provides better information about which LSMs are enabled and the ordering in which they are processed. - General comment and kernel-doc fixes and cleanups. * tag 'lsm-pr-20221212' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: lsm: Fix description of fs_context_parse_param lsm: Add/fix return values in lsm_hooks.h and fix formatting lsm: Clarify documentation of vm_enough_memory hook reiserfs: Add missing calls to reiserfs_security_free() lsm,fs: fix vfs_getxattr_alloc() return type and caller error paths device_cgroup: Roll back to original exceptions after copy failure LSM: Better reporting of actual LSMs at boot lsm: make security_socket_getpeersec_stream() sockptr_t safe audit: Fix some kernel-doc warnings lsm: remove obsoleted comments for security hooks fs: edit a comment made in bad taste
Diffstat (limited to 'fs/reiserfs')
-rw-r--r--fs/reiserfs/namei.c4
-rw-r--r--fs/reiserfs/xattr_security.c2
2 files changed, 5 insertions, 1 deletions
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 4d428e8704bc..0b8aa99749f1 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;