HIGH 7.4 Microsoft
CVE-2026-41035
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.
Microsoft Security Update 2026-Apr: 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.
Affected Products
- azl3 rsync 3.4.1-2 on Azure Linux 3.0
- cbl2 rsync 3.4.1-2 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41035
- https://nvd.nist.gov/vuln/detail/CVE-2026-41035
This high severity vulnerability with a CVSS score of 7.4 was published on 2026-04-14 via Microsoft. Affected: azl3 rsync 3.4.1-2 on Azure Linux 3.0, cbl2 rsync 3.4.1-2 on CBL Mariner 2.0.
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