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TI-2026-41697 Aliases CVE-2026-57918GHSA-27p2-fpv6-cj8c

Integer underflow in sahlberg libnfs

Priority LOW 33CWE-191Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.003 22nd percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

No affected products listed by the sources yet.

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57918
  2. 2026-10-03 Alias added: GHSA-27p2-fpv6-cj8c

References

Other 1

  • TI-2026-79487 Integer overflow in libsmb2 DCE/RPC NDR decoder lets servers corrupt heap CVSS 4.0HIGH 7.2
  • TI-2026-74155 Integer underflow in libsmb2 decode_acl causes heap over-read CVSS 4.0HIGH 7.1
  • TI-2026-74154 libsmb2 Heap Out-of-Bounds Read via File System Info Decoders CVSS 4.0HIGH 7.1
  • TI-2026-74153 Heap out-of-bounds read in libsmb2 lets SMB servers crash clients CVSS 4.0HIGH 7.1
  • TI-2026-38717 libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an… CVSS 3.1HIGH 7.1
  • TI-2026-70831 Out-of-bounds write in libnfs ZDR decoding CVSS 3.1HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences