JLSEC-2026-627 In rsync 3.0.1 through 3.4.1, `receive_xattr` relies on an untrusted length value during a qsort...

In rsync 3.0.1 through 3.4.1, receivexattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X aka --xattrs. On Linux, many but not all common configurations are vulnerable. Non-Linux platforms are more widely vulnerable...