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smb: client: mask server-provided mode to 07777 in modefromsid

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When modefromsid is active, parse_dacl() applies the server-provided
sub_auth[2] value from the NFS mode SID to cf_mode without masking to
07777. Apply the correct masking, same as in the read path.

Fixes: e2f8fbfb8d ("cifs: get mode bits from special sid on stat")
Signed-off-by: Norbert Manthey <nmanthey@amazon.de>
Assisted-by: Kiro:claude-opus-4.6
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Norbert Manthey
2026-07-09 15:54:39 +00:00
committed by Steve French
parent 179e3ee985
commit e3d9c7160d
1 changed files with 1 additions and 1 deletions
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2
fs/smb/client/cifsacl.c
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@@ -962,7 +962,7 @@ static void parse_dacl(struct smb_acl *pdacl, char *end_of_acl,
*/
fattr->cf_mode &= ~07777;
fattr->cf_mode |=
le32_to_cpu(ppace[i]->sid.sub_auth[2]);
le32_to_cpu(ppace[i]->sid.sub_auth[2]) & 07777;
break;
} else {
if (compare_sids(&(ppace[i]->sid), pownersid) == 0) {