CVE-2021-22600: Double Free in net/packet/af_packet.c leading to priviledge escalation
Medium · CVSS 6.6 (CVSS 3.1)KEV known exploitedEPSS 6.6%, 94th percentilePublished Updated Assigner: Google
In CISA’s Known Exploited Vulnerabilities catalog: Linux Kernel Privilege Escalation Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply updates per vendor instructions.
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
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H · CWE-415
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Linux Kernel: Kernel
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit (opens in new tab)
- lists.debian.org/debian-lts-announce/2022/03/msg00012.html (opens in new tab)
- security.netapp.com/advisory/ntap-20230110-0002/ (opens in new tab)
- www.debian.org/security/2022/dsa-5096 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)