Unrated severityNVD Advisory· Published Nov 12, 2025· Updated Apr 15, 2026
CVE-2025-40187
CVE-2025-40187
Description
In the Linux kernel, the following vulnerability has been resolved:
net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
If new_asoc->peer.adaptation_ind=0 and sctp_ulpevent_make_authkey=0 and sctp_ulpevent_make_authkey() returns 0, then the variable ai_ev remains zero and the zero will be dereferenced in the sctp_ulpevent_free() function.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
101- osv-coords99 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-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&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg: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%20SP7pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg: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%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg: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%2015%20SP6pkg: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%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg: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%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%20SP7pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg: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_Update_19&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg: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&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%20SP7pkg: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%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg: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%20SP7pkg: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%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg: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%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg: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
>= 4.17.0, < 5.4.301+ 98 more
- (no CPE)range: >= 4.17.0, < 5.4.301
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.4.0-150600.23.84.1.150600.12.38.1
- (no CPE)range: < 6.12.0-160000.8.1.160000.2.5
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.20.24.1
- (no CPE)range: < 6.4.0-150700.53.28.1.150700.17.19.1
- (no CPE)range: < 6.4.0-150600.23.84.1.150600.12.38.1
- (no CPE)range: < 6.12.0-160000.8.1.160000.2.5
- (no CPE)range: < 6.4.0-150600.23.84.1.150600.12.38.1
- (no CPE)range: < 6.12.0-160000.8.1.160000.2.5
- (no CPE)range: < 6.4.0-39.1.21.16
- (no CPE)range: < 6.4.0-39.1.21.16
- (no CPE)range: < 6.12.0-160000.8.1.160000.2.5
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 1-150600.13.3.1
- (no CPE)range: < 1-150700.1.3.1
- (no CPE)range: < 1-150700.15.3.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.7.28.1
- (no CPE)range: < 6.4.0-150700.20.24.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 6.4.0-39.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-40.1
- (no CPE)range: < 6.4.0-150700.7.28.1
- (no CPE)range: < 6.4.0-150700.20.24.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.4.0-150700.7.28.1
- (no CPE)range: < 6.4.0-150700.53.28.1
- (no CPE)range: < 6.4.0-150600.23.84.1
- (no CPE)range: < 6.12.0-160000.8.1
- (no CPE)range: < 6.12.0-160000.8.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/025419f4e216a3ae0d0cec622262e98e8078c447nvd
- git.kernel.org/stable/c/1014b83778c8677f1d7a57c26dc728baa801ac62nvd
- git.kernel.org/stable/c/2f3119686ef50319490ccaec81a575973da98815nvd
- git.kernel.org/stable/c/7f702f85df0266ed7b5bab81ba50394c92f3c928nvd
- git.kernel.org/stable/c/badbd79313e6591616c1b78e29a9b71efed7f035nvd
- git.kernel.org/stable/c/c21f45cfa4a9526b34d76b397c9ef080668b6e73nvd
- git.kernel.org/stable/c/d0e8f1445c19b1786759ba72a38267e1449bab7envd
- git.kernel.org/stable/c/dbceedc0213e75bf3e9f9f9e2f66b10699d004fenvd
News mentions
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