Vulnerability · Published Jun 26, 2026 · Assigned by mitre
CVE-2026-57918
High 7.1
In plain English
A high-severity security flaw in libnfs from sahlberg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.3%top 77.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libnfs | no fix listed | DEBIAN-CVE-2026-57918 |
| Debian:13 | libnfs | no fix listed | DEBIAN-CVE-2026-57918 |
| Debian:14 | libnfs | no fix listed | DEBIAN-CVE-2026-57918 |
| Ubuntu:22.04:LTS | libnfs | no fix listed | UBUNTU-CVE-2026-57918 |
| Ubuntu:24.04:LTS | libnfs | no fix listed | UBUNTU-CVE-2026-57918 |
| Ubuntu:25.10 | libnfs | no fix listed | UBUNTU-CVE-2026-57918 |
| Ubuntu:26.04:LTS | libnfs | no fix listed | UBUNTU-CVE-2026-57918 |
Affected products (as reported)
Weakness: CWE-191 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L