Description
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
Exploits (2)
References (5)
Core 5
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory vendor-advisory
https://www.debian.org/security/2022/dsa-5096
Mailing List, Patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230110-0002/
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600
Scores
CVSS v3
6.6
EPSS
0.0018
EPSS Percentile
39.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
partial
Details
CISA KEV
2022-04-11
VulnCheck KEV
2022-03-07
InTheWild.io
2022-03-07
ENISA EUVD
EUVD-2021-9736
CWE
CWE-415
Status
published
Products (12)
debian/debian_linux
9.0
debian/debian_linux
10.0
linux/linux_kernel
4.14.175 - 4.14.259
netapp/8300_firmware
netapp/8700_firmware
netapp/a400_firmware
netapp/c400_firmware
netapp/h300s_firmware
netapp/h410c_firmware
netapp/h410s_firmware
... and 2 more
Published
Jan 26, 2022
KEV Added
Apr 11, 2022
Tracked Since
Feb 18, 2026