CVE-2021-29154: Command Injection
First published: Tue Apr 06 2021(Updated: )
A flaw was found in the Linux kernels eBPF implementation. By default, accessing the eBPF verifier is only accessible to privileged users with CAP_SYS_ADMIN. A local user with the ability to insert eBPF instructions can abuse a flaw in eBPF to corrupt memory. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1160.41.1.rt56.1181.el7 | 0:3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel | <0:3.10.0-1160.41.1.el7 | 0:3.10.0-1160.41.1.el7 |
| redhat/kernel-rt | <0:4.18.0-372.9.1.rt7.166.el8 | 0:4.18.0-372.9.1.rt7.166.el8 |
| redhat/kernel | <0:4.18.0-372.9.1.el8 | 0:4.18.0-372.9.1.el8 |
| Linux Linux kernel | >=3.0<4.4.266 | |
| Linux Linux kernel | >=4.5<4.9.266 | |
| Linux Linux kernel | >=4.10<4.14.230 | |
| Linux Linux kernel | >=4.15<4.19.186 | |
| Linux Linux kernel | >=4.20<5.4.111 | |
| Linux Linux kernel | >=5.5<5.10.29 | |
| Linux Linux kernel | >=5.11<5.11.13 | |
| Fedoraproject Fedora | =33 | |
| Debian Debian Linux | =9.0 | |
| Netapp Cloud Backup | ||
| Netapp Hci Management Node | ||
| Netapp Solidfire | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| All of | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| All of | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| All of | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| All of | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| All of | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| All of | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| All of | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| IBM DRM | <=2.0.6 | |
| debian/linux | 5.10.223-1 6.1.106-3 6.1.99-1 6.10.9-1 |
Remedy
This issue does not affect most systems by default. An administrator would need to have enabled the BPF JIT to be affected. It can be disabled immediately with the command: # echo 0 > /proc/sys/net/core/bpf_jit_enable Or it can be disabled for all subsequent boots of the system by setting a value in /etc/sysctl.d/44-bpf-jit-disable ## start file ## net.core.bpf_jit_enable=0 ## end file ##
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-29154 https://nvd.nist.gov/vuln/detail/CVE-2021-29154
- https://bugzilla.redhat.com/show_bug.cgi?id=1946684
- https://access.redhat.com/errata/RHSA-2021:3328
- https://access.redhat.com/errata/RHSA-2021:3327
- https://access.redhat.com/errata/RHSA-2022:1975
- https://access.redhat.com/errata/RHSA-2022:1988
- https://access.redhat.com/security/cve/cve-2021-29154
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947631
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e4d4d456436bfb2fe412ee2cd489f7658449b098
- https://www.openwall.com/lists/oss-security/2021/04/08/1
- https://news.ycombinator.com/item?id=26757760
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W5YFGIIF24475A2LNW3UWHW2SNCS3G7M/
- http://packetstormsecurity.com/files/162434/Kernel-Live-Patch-Security-Notice-LSN-0076-1.html
- https://security.netapp.com/advisory/ntap-20210604-0006/
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=26f55a59dc65ff77cd1c4b37991e26497fc68049
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e4d4d456436bfb2fe412ee2cd489f7658449b098
- https://launchpad.net/bugs/cve/CVE-2021-29154
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5YFGIIF24475A2LNW3UWHW2SNCS3G7M/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/199609
- https://www.ibm.com/support/pages/node/6497499 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2021-29154
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29154
- https://nvd.nist.gov/vuln/detail/CVE-2021-29154
- https://ubuntu.com/security/CVE-2021-29154
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- agent/type
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-29154
- agent/first-publish-date
- agent/remedy
- agent/severity
- agent/weakness
- agent/description
- agent/author
- collector/launchpad-cve
- source/Launchpad
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- collector/nvd-cve
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/ibm-support
- source/IBM
- agent/references
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/3.0
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.5
- version/linux linux kernel/5.11
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- vendor/netapp
- canonical/netapp cloud backup
- canonical/netapp hci management node
- canonical/netapp solidfire
- canonical/netapp h300s firmware
- canonical/netapp h300s
- canonical/netapp h500s firmware
- canonical/netapp h500s
- canonical/netapp h700s firmware
- canonical/netapp h700s
- canonical/netapp h300e firmware
- canonical/netapp h300e
- canonical/netapp h500e firmware
- canonical/netapp h500e
- canonical/netapp h700e firmware
- canonical/netapp h700e
- canonical/netapp h410s firmware
- canonical/netapp h410s
- vendor/ibm
- canonical/ibm drm
- version/ibm drm/2.0.6
- package-manager/debian