In rsync 3.0.1 through 3.4.1, receive_xattr 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.
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25 Sep 2026 08:51Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.4 - 7.8
EPSS0.00493
SSVC