On 6/19/26 04:01, Keshav Verma wrote:
Validate the xattr entry before reading its fields in f2fs_listxattr(). Return -EFSCORRUPTED when the entry is outside the valid xattr storage area instead of returning a successful partial result.
Fixes line and Cc: [email protected]
Signed-off-by: Keshav Verma <[email protected]>
Reviewed-by: Chao Yu <[email protected]> Thanks,
--- fs/f2fs/xattr.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index 610d5810074d..18f495db20d2 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -581,8 +581,6 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) size_t prefix_len; size_t size;- prefix = f2fs_xattr_prefix(entry->e_name_index, dentry);- if ((void *)(entry) + sizeof(__u32) > last_base_addr || (void *)XATTR_NEXT_ENTRY(entry) > last_base_addr) { f2fs_err(F2FS_I_SB(inode), "list inode (%llu) has corrupted xattr", @@ -590,9 +588,12 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK); f2fs_handle_error(F2FS_I_SB(inode), ERROR_CORRUPTED_XATTR); - break; + error = -EFSCORRUPTED; + goto cleanup; }+ prefix = f2fs_xattr_prefix(entry->e_name_index, dentry);+ if (!prefix) continue;
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