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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-11 01:06:58 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-01-11 01:06:58 +0100 |
| commit | 6bd593bc743d3b959af157698064ece5fb56aee0 (patch) | |
| tree | e7459fe565e34501c6a956ef72c6aa6cd951f4ca /fs/ecryptfs/inode.c | |
| parent | keys, dns: Fix size check of V1 server-list header (diff) | |
| parent | MAINTAINERS: update unicode maintainer e-mail address (diff) | |
| download | linux-6bd593bc743d3b959af157698064ece5fb56aee0.tar.xz linux-6bd593bc743d3b959af157698064ece5fb56aee0.zip | |
Merge tag 'unicode-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode
Pull unicode updates from Gabriel Krisman Bertazi:
"Other than the update to MAINTAINERS, this PR has only a fix to stop
ecryptfs from inadvertently mounting case-insensitive filesystems that
it cannot handle, which would otherwise caused post-mount failures"
* tag 'unicode-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode:
MAINTAINERS: update unicode maintainer e-mail address
ecryptfs: Reject casefold directory inodes
Diffstat (limited to 'fs/ecryptfs/inode.c')
| -rw-r--r-- | fs/ecryptfs/inode.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index b0e8774c435a..d7193687b9b4 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -78,6 +78,14 @@ static struct inode *__ecryptfs_get_inode(struct inode *lower_inode, if (lower_inode->i_sb != ecryptfs_superblock_to_lower(sb)) return ERR_PTR(-EXDEV); + + /* Reject dealing with casefold directories. */ + if (IS_CASEFOLDED(lower_inode)) { + pr_err_ratelimited("%s: Can't handle casefolded directory.\n", + __func__); + return ERR_PTR(-EREMOTE); + } + if (!igrab(lower_inode)) return ERR_PTR(-ESTALE); inode = iget5_locked(sb, (unsigned long)lower_inode, |