CVE-2021-22600

moderate-risk
Published 2022-01-26

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

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.6/10 Medium
LOCAL / HIGH complexity

Affected Products (12)

8300 Firmware
8700 Firmware
A400 Firmware

Affected Vendors

Debian Linux Netapp

References (9)

Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6...
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230110-0002/
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6...
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20230110-0002/
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
41
/ 100
moderate-risk
Severity 17/34 · Moderate
Exploitability 7/34 · Low
Exposure 17/34 · Moderate