CVE-2021-22600: Double Free in net/packet/af_packet.c leading to priviledge escalation
First published: Wed Jan 26 2022(Updated: )
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Credit: cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Android | ||
| Red Hat Kernel-devel | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 | |
| Linux Kernel | >=4.14.175<4.14.259 | |
| Linux Kernel | >=4.19.114<4.19.222 | |
| Linux Kernel | >=5.4.29<5.4.168 | |
| Linux Kernel | >=5.5.14<5.10.88 | |
| Linux Kernel | >=5.11<5.15.11 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H410S | ||
| NetApp H410S Firmware |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
- https://www.debian.org/security/2022/dsa-5096
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20230110-0002/
- https://launchpad.net/bugs/cve/CVE-2021-22600
- https://android.googlesource.com/kernel/common/+/27fc5a7c6972bd73ac0cc0cf811ec2ecb989014f
- https://source.android.com/docs/security/bulletin/2022-05-01 (Advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2021-22600
- https://git.kernel.org/linus/ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
- https://security-tracker.debian.org/tracker/CVE-2021-22600
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22600
- https://ubuntu.com/security/CVE-2021-22600
Frequently Asked Questions
What is the severity of CVE-2021-22600?
CVE-2021-22600 has a high severity rating as it allows local users to escalate privileges or cause denial of service.
How do I fix CVE-2021-22600?
To fix CVE-2021-22600, upgrade your kernel to a version later than those specifically affected or rebuild after commit ec6af094ea28f0f2dda1a6a33b14cd57e36a9755.
Which systems are affected by CVE-2021-22600?
CVE-2021-22600 affects various Linux Kernel versions ranging from 4.14.175 to 4.14.259, 4.19.114 to 4.19.222, 5.4.29 to 5.4.168, 5.5.14 to 5.10.88, and 5.11 to 5.15.11, as well as Debian 9 and 10.
What type of vulnerability is CVE-2021-22600?
CVE-2021-22600 is categorized as a double free vulnerability in the kernel's packet_set_ring() function.
Can CVE-2021-22600 be exploited remotely?
CVE-2021-22600 cannot be exploited remotely; it requires local user access for exploitation.
- collector/launchpad-cve
- source/Launchpad
- agent/type
- agent/first-publish-date
- agent/weakness
- agent/severity
- agent/remedy
- agent/references
- agent/trending
- agent/source
- agent/title
- collector/mitre-cve
- source/MITRE
- agent/author
- collector/usn-cve
- source/Ubuntu
- agent/description
- collector/android-source
- source/Android
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/last-modified-date
- exploited/true
- collector/cisa-known-exploited
- source/CISA
- agent/tags
- agent/softwarecombine
- agent/event
- collector/security-tracker-debian
- source/Debian
- collector/nvd-cve
- source/NVD
- collector/nvd-api
- collector/nvd-index
- vendor/google
- canonical/android
- vendor/linux
- canonical/red hat kernel-devel
- package-manager/debian
- canonical/linux kernel
- version/linux kernel/4.14.175
- version/linux kernel/4.19.114
- version/linux kernel/5.4.29
- version/linux kernel/5.5.14
- version/linux kernel/5.11
- vendor/debian
- canonical/debian
- version/debian/9.0
- version/debian/10.0
- vendor/netapp
- canonical/netapp h410c
- canonical/netapp h410c firmware
- canonical/netapp h300s firmware
- canonical/netapp h500e firmware
- canonical/netapp h700s
- canonical/netapp h410s
- canonical/netapp h410s firmware