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CVE-2026-108985

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib...

7.1 HighFix available

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
High

Exploit likelihood

0.18%Unchanged since Oct 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2026-97165 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
EUVD-2026-97165
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-vhww-3hg5-5f37 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib...

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
GHSA-vhww-3hg5-5f37
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness
CWE-787
Updated
2026-11-02
OSVBELL-CVE-2026-108985 7.1
Record
BELL-CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSV 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness
CWE-787
Updated
2026-11-04
Show 6 moreShow less
OSVDEBIAN-CVE-2026-108985 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
DEBIAN-CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSVOESA-2026-4730 7.1

libnfs security update

Package contains a library of functions for accessing NFSv2 and NFSv3 servers from user space. It provides a low-level,asynchronous RPC library for accessing NFS protocols, an asynchronous library with POSIX-like VFS functions,and a synchronous library with POSIX-like VFS functions.

Security Fix(es):

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.(CVE-2026-108985)

Record
OESA-2026-4730
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-04
OSVOESA-2026-4731 7.1

libnfs security update

Package contains a library of functions for accessing NFSv2 and NFSv3 servers from user space. It provides a low-level,asynchronous RPC library for accessing NFS protocols, an asynchronous library with POSIX-like VFS functions,and a synchronous library with POSIX-like VFS functions.

Security Fix(es):

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.(CVE-2026-108985)

Record
OESA-2026-4731
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-04
OSVUBUNTU-CVE-2026-108985 7.1

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
UBUNTU-CVE-2026-108985
CVSS 3.1
7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSVAZL-107960 No score

CVE-2026-108985 affecting package libnfs for versions less than 5.0.2-3

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Record
AZL-107960
Updated
2026-11-06
OSVopenSUSE-SU-2026:12400-1 No score

libnfs-devel-6.0.2-2.1 on GA media

These are all security issues fixed in the libnfs-devel-6.0.2-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:12400-1
Updated
2026-11-04

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libnfs
Azure Linux:3
 before 5.0.2-3
5.0.2-3
libnfs
Alpaquita:23
 5.0.2-r0 and later None known
libnfs
Alpaquita:25
 5.0.3-r0 and later None known
libnfs
Alpaquita:stream
 5.0.2-r0 and later None known
libnfs
Debian:12
 All versions, plus listed versions
4.0.0-14.0.0-1+deb12u15.0.2-15.0.2-1.15.0.2-1~exp1
 None known
libnfs
Debian:13
 All versions, plus listed versions
5.0.2-15.0.2-1+deb13u15.0.2-1.1
 None known
libnfs
Debian:14
 All versions, plus listed versions
5.0.2-15.0.2-1.1
 None known
libnfs
openEuler:24.03-LTS-SP3
 before 5.0.2-4.oe2403sp3
5.0.2-4.oe2403sp3
libnfs
openEuler:24.03-LTS-SP1
 before 5.0.2-4.oe2403sp1
5.0.2-4.oe2403sp1
libnfs
Ubuntu:16.04:LTS
 All versions, plus listed versions
1.9.7-21.9.8-1
 None known
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Affected packages
PackageAffectedFixed
libnfs
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.11.0-21.11.0-32.0.0-1~exp1
 None known
libnfs
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.0.0-2ubuntu14.0.0-1
 None known
libnfs
Ubuntu:22.04:LTS
 All versions, plus listed versions
4.0.0-14.0.0-1build14.0.0-1build24.0.0-1ubuntu0.1
 None known
libnfs
Ubuntu:24.04:LTS
 All versions, plus listed versions
4.0.0-1build25.0.2-15.0.2-1build15.0.2-1ubuntu0.24.04.1
 None known
libnfs
Ubuntu:26.10
 All versions, plus listed versions
5.0.2-1ubuntu15.0.2-1ubuntu25.0.2-1ubuntu3
 None known
libnfs
Ubuntu:26.04:LTS
 All versions, plus listed versions
5.0.2-1build15.0.2-1build25.0.2-1ubuntu15.0.2-1ubuntu1.1
 None known
libnfs
openSUSE:Tumbleweed
 before 6.0.2-2.1
6.0.2-2.1

History

History
RecordedChangedSources
affectedOSV
affected, aliases, referencesOSV
affected, aliases, facts, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-108985 is a high vulnerability (CVSS 7.1) in Sahlberg Libnfs, published October 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in libnfs 5.0.2-3.

References

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