Unrated severityNVD Advisory· Published Mar 9, 2021· Updated Aug 3, 2024
CVE-2021-20268
CVE-2021-20268
Description
An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Affected products
36- Linux/Linux kerneldescription
- osv-coords35 versionspkg: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-base&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-default&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-azure&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-syms&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-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%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%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-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_1&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-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%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-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3
< 5.3.18-59.5.2+ 34 more
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2.18.2.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.1
- (no CPE)range: < 5.3.18-59.5.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.2.18.2.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 1-7.5.1
- (no CPE)range: < 5.3.18-59.5.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-59.5.2
- (no CPE)range: < 5.3.18-38.3.1
- (no CPE)range: < 5.3.18-59.5.1
- (no CPE)range: < 5.3.18-59.5.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- bugzilla.redhat.com/show_bug.cgimitrex_refsource_MISC
- lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/mitrex_refsource_MISC
- security.netapp.com/advisory/ntap-20210409-0006/mitrex_refsource_CONFIRM
News mentions
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