High severity7.8NVD Advisory· Published Jan 25, 2022· Updated Jun 17, 2026
CVE-2021-34866
CVE-2021-34866
Description
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
63- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- Range: 5.14-rc3
- Range: 5.14-rc3
- osv-coords50 versionspkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_0&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_3&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_4&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_5&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_6&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_9&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3
< 5.3.18-59.34.1+ 49 more
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.2
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1.18.21.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
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- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.2
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.1
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- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.2
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1.18.21.1
- (no CPE)range: < 5.3.18-59.34.1.18.21.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 8-3.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 5-2.2
- (no CPE)range: < 4-2.2
- (no CPE)range: < 2-2.2
- (no CPE)range: < 1-7.3.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-60.1
- (no CPE)range: < 5.3.18-60.1
- (no CPE)range: < 5.3.18-60.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.2
- (no CPE)range: < 5.3.18-60.1
- (no CPE)range: < 5.3.18-59.34.1
- (no CPE)range: < 5.3.18-38.28.1
- (no CPE)range: < 5.3.18-60.1
- (no CPE)range: < 5.3.18-59.34.1
Patches
Vulnerability mechanics
References
2- security.netapp.com/advisory/ntap-20220217-0008/nvdThird Party Advisory
- www.zerodayinitiative.com/advisories/ZDI-21-1148/nvdThird Party AdvisoryVDB Entry
News mentions
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