CVSS 3.1
7.0 highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-22600
High (7.0) in Linux Kernel. In CISA KEV since 2022-04-11. EPSS 6.6% chance of exploitation in the next 30 days.
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
Severity
- EPSS
- 6.6% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2022-04-11, due 2022-05-02
- CWE
- CWE-415
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- linux:linux_kernel
- netapp:8300_firmware
- netapp:8700_firmware
- netapp:a400_firmware
- netapp:c400_firmware
- netapp:h300s_firmware
- netapp:h410c_firmware
- netapp:h410s_firmware
- netapp:h500s_firmware
- netapp:h700s_firmware
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20230110-0002/
- https://www.debian.org/security/2022/dsa-5096
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755