CVE-2026-57918

EUVD-2026-39647
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.
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 9.39%
Debian logo
Debian Releases
Debian Product
Codename
libnfs
bookworm
4.0.0-1
fixed
bookworm (security)
4.0.0-1+deb12u1
fixed
bullseye
4.0.0-1
fixed
bullseye (security)
4.0.0-1+deb11u1
fixed
forky
5.0.2-1.1
fixed
sid
5.0.2-1.1
fixed
trixie
5.0.2-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libnfs
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
questing
not-affected
resolute
not-affected
Common Weakness Enumeration
References
https://github.com/sahlberg/libnfs/commit/935b8db712b3c6649bc57ddc276526c4a31680de