CVE-2026-57918 — HIGH (7.1)

Vulnerability Description

libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

LOW

Related Weaknesses (CWE)

CWE-191

References

https://github.com/sahlberg/libnfs/commit/935b8db712b3c6649bc57ddc276526c4a31680

FAQ

What is CVE-2026-57918?

CVE-2026-57918 is a vulnerability with a CVSS score of 7.1 (HIGH). libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds t...

How severe is CVE-2026-57918?

CVE-2026-57918 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-57918?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.