Unrated severityNVD Advisory· Published Oct 28, 2025· Updated Apr 15, 2026
CVE-2025-40080
CVE-2025-40080
Description
In the Linux kernel, the following vulnerability has been resolved:
nbd: restrict sockets to TCP and UDP
Recently, syzbot started to abuse NBD with all kinds of sockets.
Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method.
Explicitely accept TCP and UNIX stream sockets.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
114- osv-coords113 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-source-longterm&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_17&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_17&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_7&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_7&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
>= 5.4.0, < 6.1.156+ 112 more
- (no CPE)range: >= 5.4.0, < 6.1.156
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150600.23.78.1.150600.12.34.2
- (no CPE)range: < 6.12.0-160000.6.1.160000.2.4
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.17.7-1.1
- (no CPE)range: < 6.18.16-1.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150700.20.18.1
- (no CPE)range: < 6.4.0-150600.23.78.1.150600.12.34.2
- (no CPE)range: < 6.4.0-150700.53.25.1.150700.17.17.1
- (no CPE)range: < 6.12.0-160000.6.1.160000.2.4
- (no CPE)range: < 6.12.0-160000.6.1.160000.2.4
- (no CPE)range: < 6.4.0-36.1.21.13
- (no CPE)range: < 6.4.0-36.1.21.13
- (no CPE)range: < 6.12.0-160000.6.1.160000.2.4
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.2
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 1-150600.1.3.1
- (no CPE)range: < 1-150600.13.5.1
- (no CPE)range: < 1-150700.1.3.1
- (no CPE)range: < 1-150700.15.3.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-38.1
- (no CPE)range: < 6.4.0-38.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150700.7.25.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150700.20.18.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 6.4.0-36.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-38.1
- (no CPE)range: < 6.4.0-38.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150700.7.25.1
- (no CPE)range: < 6.4.0-150600.8.55.1
- (no CPE)range: < 6.4.0-150700.20.18.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.4.0-150600.10.58.1
- (no CPE)range: < 6.4.0-150700.7.25.1
- (no CPE)range: < 6.4.0-150600.23.78.1
- (no CPE)range: < 6.4.0-150700.53.25.1
- (no CPE)range: < 6.12.0-160000.7.1
- (no CPE)range: < 6.12.0-160000.7.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/37ad11f20e164c23ce827dd455b42c0fdd29685cnvd
- git.kernel.org/stable/c/4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7nvd
- git.kernel.org/stable/c/808e2335bc1cf2293b9e36ccc94c267c81509c71nvd
- git.kernel.org/stable/c/9f7c02e031570e8291a63162c6c046dc15ff85b0nvd
- git.kernel.org/stable/c/c365e8f20f4201d873a70385bd919f0fb531e960nvd
News mentions
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