VulnerabilityAnalyzed
CVE-2021-22600
Linux Kernel Privilege Escalation Vulnerability
KEVHIGH 7.0EPSS 6.08%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 2 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.08% probability · 93th percentile
- CISA KEV
- Listed 11 April 2022 · due 2 May 2022
- Weakness
- CWE-415
- Affected
- netapp/8300 firmware · netapp/8700 firmware · netapp/a400 firmware · netapp/c400 firmware · linux/linux kernel · debian/debian linux · netapp/h410c firmware · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h410s firmware
- Source
- cve-coordination@google.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-22600
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755Mailing List, Patch
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230110-0002/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755Mailing List, Patch
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230110-0002/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.