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CVE-2025-67901

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Date: December 14, 2025

openrsync through 0.5.0, as used in OpenBSD through 7.8 and on other platforms, allows a client to cause a server SIGSEGV by specifying a length of zero for block data, because the relationship between p->rem and p->len is not checked.

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2025-67901
https://github.com/kristapsdz/openrsync/issues/34
https://github.com/openbsd/src/blob/60b9c3dff1abf933e85e3c4d96b54201ee947513/usr.bin/rsync/blocks.c#L480-L481
https://www.mend.io/vulnerability-database/CVE-2025-67901

Severity Score

Weakness Type (CWE)

Improper Validation of Specified Quantity in Input

CWE-1284

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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