Unrated severityNVD Advisory· Published Nov 22, 2019· Updated Aug 5, 2024

CVE-2019-19227

Description

In the AppleTalk subsystem in the Linux kernel before 5.1, there is a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Linux kerneldescription
Ubuntu/Linux Kernelllm-fuzzy
Range: <5.1
osv-coords96 versions
pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/kernel-vanilla&distro=openSUSE%20Leap%2015.1 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP1 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-livepatch-SLE15-SP1_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP1 pkg:rpm/suse/kernel-livepatch-SLE15_Update_17&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP1 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP4 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP4 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP1 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP1 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP1 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP4 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP1 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP1 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP1 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP4 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP1 pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-vanilla&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015 pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_11&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 4.12.14-lp151.28.36.1+ 95 more
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-lp151.28.36.1
- (no CPE)range: < 4.12.14-5.47.1
- (no CPE)range: < 4.12.14-8.22.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.2
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 1-3.3.1
- (no CPE)range: < 1-1.3.2
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-8.12.1
- (no CPE)range: < 4.12.14-14.17.1
- (no CPE)range: < 4.12.14-8.12.1
- (no CPE)range: < 4.12.14-14.17.1
- (no CPE)range: < 4.12.14-5.47.1
- (no CPE)range: < 4.12.14-8.22.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-8.12.1
- (no CPE)range: < 4.12.14-14.17.1
- (no CPE)range: < 4.12.14-5.47.1
- (no CPE)range: < 4.12.14-8.22.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 4.12.14-6.34.1
- (no CPE)range: < 4.12.14-16.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-95.45.1
- (no CPE)range: < 4.12.14-122.7.1
- (no CPE)range: < 4.12.14-8.12.1
- (no CPE)range: < 4.12.14-14.17.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 3.0.101-108.111.1
- (no CPE)range: < 4.12.14-150.47.1
- (no CPE)range: < 4.12.14-197.29.1
- (no CPE)range: < 1-6.5.1
- (no CPE)range: < 1-8.7.1

Patches

Vulnerability mechanics

References

lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.htmlmitrevendor-advisoryx_refsource_SUSE
usn.ubuntu.com/4254-1/mitrevendor-advisoryx_refsource_UBUNTU
usn.ubuntu.com/4254-2/mitrevendor-advisoryx_refsource_UBUNTU
usn.ubuntu.com/4258-1/mitrevendor-advisoryx_refsource_UBUNTU
usn.ubuntu.com/4287-1/mitrevendor-advisoryx_refsource_UBUNTU
usn.ubuntu.com/4287-2/mitrevendor-advisoryx_refsource_UBUNTU
packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlmitrex_refsource_MISC
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1mitrex_refsource_MISC
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/mitrex_refsource_MISC
lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlmitremailing-listx_refsource_MLIST
lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlmitremailing-listx_refsource_MLIST
seclists.org/bugtraq/2020/Jan/10mitremailing-listx_refsource_BUGTRAQ
security.netapp.com/advisory/ntap-20200103-0001/mitrex_refsource_CONFIRM

News mentions

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