CVE-2026-93811
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Fix acl.sd_buf memory leak and invalid sd_size error handling
1. When ndr_decode_v4_ntacl() fails, the code jumped to free_n_data
which only freed n.data, skipping kfree(acl.sd_buf) and leaking
the buffer. Zero-initialize struct xattr_ntacl acl, reorder error
labels to out_free to release acl.sd_buf on all error paths.
2. if (acl.sd_size < sizeof(struct smb_ntsd)) is true, original code
returned success without freeing sd_buf and left stale *pntsd.
Set rc = -EINVAL before jumping to out_free to return error code and
free buffer.
https://git.kernel.org/stable/c/6e6329322ad733c5b23555c609353841560b26bc
https://git.kernel.org/stable/c/c3836f55e0dab96314774215e12d87f63fa919f2
https://git.kernel.org/stable/c/d708a36634bb7b6f94d0e76d587d2ec50b2b93b5