High severity7.1NVD Advisory· Published Mar 10, 2022· Updated Jun 17, 2026

CVE-2021-3739

Description

A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

AI Insight

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

Affected products

osv-coords78 versions
pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_6&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_19&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.0 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.0 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.0 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1
< 5.3.18-59.24.1.18.12.1+ 77 more
- (no CPE)range: < 5.3.18-59.24.1.18.12.1
- (no CPE)range: < 5.3.18-51.1
- (no CPE)range: < 5.3.18-18.66.1
- (no CPE)range: < 5.3.18-18.66.1
- (no CPE)range: < 5.3.18-38.22.2
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1.18.12.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 1-7.5.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2.9.38.3
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.1
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 1-5.3.4
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2
- (no CPE)range: < 5.3.18-24.83.2.9.38.3
- (no CPE)range: < 5.3.18-57.1
- (no CPE)range: < 5.3.18-57.1
- (no CPE)range: < 5.3.18-59.24.1.18.12.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-lp152.92.1
- (no CPE)range: < 5.3.18-38.22.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-24.83.1
- (no CPE)range: < 5.3.18-51.2
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-51.2
- (no CPE)range: < 5.3.18-24.83.1
- (no CPE)range: < 5.3.18-38.22.1
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-38.22.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-51.1
- (no CPE)range: < 5.3.18-51.2
- (no CPE)range: < 5.3.18-18.66.2
- (no CPE)range: < 5.3.18-38.22.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-59.24.1
- (no CPE)range: < 5.3.18-57.1
- (no CPE)range: < 5.3.18-57.1
- (no CPE)range: < 5.3.18-lp152.92.2.lp152.8.42.3
- (no CPE)range: < 5.3.18-lp152.92.1
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-lp152.92.1
- (no CPE)range: < 5.3.18-lp152.92.2
- (no CPE)range: < 5.3.18-38.22.2
- (no CPE)range: < 5.3.18-57.1
Linux/Kernelllm-fuzzy3 versions
(expand)+ 2 more
- (no CPE)
- (no CPE)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: <=5.14.20
Fedoraproject/Fedora
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
NetApp/H300s Firmware
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
NetApp/H500s Firmware
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
NetApp/H700s Firmware
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
NetApp/H300e Firmware
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
NetApp/H500e Firmware
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
NetApp/H700e Firmware
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
NetApp/H410s Firmware
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
NetApp/H410c Firmware
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdMailing ListPatchVendor Advisory
www.openwall.com/lists/oss-security/2021/08/25/3nvdMailing ListPatchThird Party Advisory
github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091nvdExploitPatchThird Party Advisory
security.netapp.com/advisory/ntap-20220407-0006/nvdThird Party Advisory
ubuntu.com/security/CVE-2021-3739nvdThird Party Advisory

News mentions

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