HIGH
CVE-2021-22600
CVSS
7
KEV
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
Summary dbcve.org
A double-free vulnerability exists in the packet_set_ring() function within net/packet/af_packet.c in the Linux kernel. Local attackers can exploit this through crafted syscalls to trigger memory corruption, potentially achieving privilege escalation or causing a denial of service.
Mitigation
Upgrade the Linux kernel to a version beyond the affected releases, or rebuild the kernel applying the fix from commit ec6af094ea28f0f2dda1a6a33b14cd57e36a9755.
Weakness (CWE)
CWE-415
Double Free
EPSS Score
6.53%
Probability of exploitation in next 30 days
93.5th percentile
References
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Mailing List, Patch
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230110-0002/
Third Party Advisory
https://www.debian.org/security/2022/dsa-5096
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600
US Government Resource
Base CVE data derived from NVD (public domain). Enrichment by
dbcve.org
(CC-BY-4.0). Fetched via API.