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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-04 13:45:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-04 13:45:09 +0200 |
| commit | 8ca1f4c6fb1462ee120730ea75c19da10d2f2d6f (patch) | |
| tree | fa6bebc72c42a94b66d4b3676371753d31e66702 /fs/ntfs3 | |
| parent | 9372da540bfdcfa345309043e57b335c900a8ad9 (diff) | |
| parent | 199c9959d3a9b53f346c221757fc7ac507fbac50 (diff) | |
| download | linux-rolling-stable.tar.gz linux-rolling-stable.zip | |
Merge v7.1.3linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ntfs3')
| -rw-r--r-- | fs/ntfs3/xattr.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c index 9eeac0ab2b71..372cf2f2e89b 100644 --- a/fs/ntfs3/xattr.c +++ b/fs/ntfs3/xattr.c @@ -851,6 +851,12 @@ out: return err; } +static bool ntfs_is_reserved_lxattr(const char *name) +{ + return !strcmp(name, "$LXUID") || !strcmp(name, "$LXGID") || + !strcmp(name, "$LXMOD") || !strcmp(name, "$LXDEV"); +} + /* * ntfs_setxattr - inode_operations::setxattr */ @@ -955,6 +961,12 @@ set_new_fa: goto out; } + /* Do not allow non privileged users to change $LXUID/$LXGID... */ + if (ntfs_is_reserved_lxattr(name) && !capable(CAP_SYS_ADMIN)) { + err = -EPERM; + goto out; + } + /* Deal with NTFS extended attribute. */ err = ntfs_set_ea(inode, name, strlen(name), value, size, flags, 0, NULL); |